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Academic literature on the topic 'Interferece Mitigation'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Interferece Mitigation"

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Ekers, R. D., and J. F. Bell. "Radio Frequency Interference." Symposium - International Astronomical Union 199 (2002): 498–505. http://dx.doi.org/10.1017/s0074180900169669.

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We describe the nature of the interference challenges facing radio astronomy in the next decade. These challenges will not be solved by regulation only, negotiation and mitigation will become vital. There is no silver bullet for mitigating against interference. A successful mitigation approach is most likely to be a hierarchical or progressive approach throughout the telescope and signal conditioning and processing systems. We summarise some of the approaches, including adaptive systems.
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Garzia, Fabio, Johannes Rossouw van der Merwe, Alexander Rügamer, Santiago Urquijo, and Wolfgang Felber. "HDDM Hardware Evaluation for Robust Interference Mitigation." Sensors 20, no. 22 (November 13, 2020): 6492. http://dx.doi.org/10.3390/s20226492.

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Interference can significantly degrade the performance of global navigation satellite system (GNSS) receivers. Therefore, mitigation methods are required to ensure reliable operations. However, as there are different types of interference, robust, multi-purpose mitigation algorithms are needed. This paper describes the most popular state-of-the-art interference mitigation techniques. The high-rate DFT-based data manipulator (HDDM) is proposed as a possible solution to overcome their limitations. This paper presents a hardware implementation of the HDDM algorithm. The hardware HDDM module is integrated in three different receivers equipped with analog radio-frequency (RF) front-ends supporting signals with different dynamic range. The resource utilization and power consumption is evaluated for the three cases. The algorithm is compared to a low-end mass-market receiver and a high-end professional receiver with basic and sophisticated interference mitigation capabilities, respectively. Different type of interference are used to compare the mitigation capabilities of the receivers under test. Results of the HDDM hardware implementation achieve the similar or improved performance to the state of the art. With more complex interferences, like frequency hopping or pulsed, the HDDM shows even better performance.
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van der Merwe, Johannes Rossouw, Fabio Garzia, Alexander Rügamer, Santiago Urquijo, David Contreras Franco, and Wolfgang Felber. "Wide-Band Interference Mitigation in GNSS Receivers Using Sub-Band Automatic Gain Control." Sensors 22, no. 2 (January 16, 2022): 679. http://dx.doi.org/10.3390/s22020679.

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The performance of global navigation satellite system (GNSS) receivers is significantly affected by interference signals. For this reason, several research groups have proposed methods to mitigate the effect of different kinds of jammers. One effective method for wide-band interference mitigation (IM) is the high-rate DFT-based data manipulator (HDDM) pulse blanker (PB). It provides good performance to pulsed and frequency sparse interference. However, it and many other methods have poor performance against wide-band noise signals, which are not frequency-sparse. This article proposes to include automatic gain control (AGC) in the HDDM structure to attenuate the signal instead of removing it: the HDDM-AGC. It overcomes the wide-band noise limitation for IM at the cost of limiting mitigation capability to other signals. Previous studies with this approach were limited to only measuring the carrier-to-noise density ratio (C/N0) performance of tracking, but this article extends the analysis to include the impact of the HDDM-AGC algorithm on the position, velocity, and time (PVT) solution. It allows an end-to-end evaluation and impact assessment of mitigation to a GNSS receiver. This study compares two commercial receivers: one high-end and one low-cost, with and without HDDM IM against laboratory-generated interference signals. The results show that the HDDM-AGC provides a PVT availability and precision comparable to high-end commercial receivers with integrated mitigation for most interference types. For pulse interferences, its performance is superior. Further, it is shown that degradation is minimized against wide-band noise interferences. Regarding low-cost receivers, the PVT availability can be increased up to 40% by applying an external HDDM-AGC.
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Magiera, Jaroslaw. "A Multi-Antenna Scheme for Early Detection and Mitigation of Intermediate GNSS Spoofing." Sensors 19, no. 10 (May 27, 2019): 2411. http://dx.doi.org/10.3390/s19102411.

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This article presents a method for detecting and mitigating intermediate GNSS spoofing. In this type of attack, at its early stage, a spoofer transmits counterfeit signals which have slight time offsets compared to true signals arriving from satellites. The anti-spoofing method proposed in this article fuses antenna array processing techniques with a multipath detection algorithm. The latter is necessary to separate highly correlated true and counterfeit GNSS signals. Spoofing detection is based on comparison of steering vectors related to received spatial components. Whereas mitigation is achieved by means of adaptive beamforming which excises interferences arriving from common direction and preserves undistorted signals from GNSS satellites. Performance of proposed method is evaluated through simulations, results of which prove the usefulness of this method for protecting GNSS receivers from intermediate spoofing interference.
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Xu, Zhihuo, Shuaikang Xue, and Yuexia Wang. "Incoherent Interference Detection and Mitigation for Millimeter-Wave FMCW Radars." Remote Sensing 14, no. 19 (September 27, 2022): 4817. http://dx.doi.org/10.3390/rs14194817.

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Current automotive radar technology is almost exclusively implemented using frequency modulated continuous wave (FMCW) radar in the millimeter wave bands. Unfortunately, incoherent interference is becoming a serious problem due to the increasing number of automotive radars in dense traffic situations. To address this issue, this article presents a sparsity-based technique for mitigating the incoherent interference between FMCW radars. First, a low-pass filter-based technique is developed to detect the envelope of the interference. Next, the labeled regions where interference is present are considered as missing data. In this way, the problem of mitigating interference is further formulated as the restoration of the echo using L1 norm-regularized least squares. Finally, the alternating direction method of the multipliers-based technique is applied to restore the radar echoes. Extensive experimental results demonstrate the effective performance of the proposed approach. Compared to state-of-the-art interference mitigation methods, the proposed method remarkably improves the quality of radar targets.
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Kim, J. S. "Mitigation of Inter-Symbol Interference in Underwater Acoustic Communication Using Spatial Filter." Journal Of The Acoustical Society Of Korea 33, no. 1 (2014): 48. http://dx.doi.org/10.7776/ask.2014.33.1.048.

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Same, Mohammad Hossein, Gabriel Gandubert, Preslav Ivanov, René Landry, and Gabriel Gleeton. "Effects of Interference and Mitigation Using Notch Filter for the DVB-S2 Standard." Telecom 1, no. 3 (December 4, 2020): 242–65. http://dx.doi.org/10.3390/telecom1030017.

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The abundance of radio signals and their increasing number creates interferences on adjacent signals and sometimes, with co-channel communication. Jammers, which are operated by hackers or by military forces, are another source of smart and powerful interferences. This paper will discuss the effect of the continuous wave interference (CWI) on a radio communication receiver, specifically with the Digital Video Broadcasting for Satellite Second Generation (DVB-S2) communication standard. It investigates the general effect of the interference on a Quadrature Phase Shift Keying (QPSK) signal over each part of the DVB-S2 receiver. It also focuses on the impact of the center frequency and power of the interference on the critical blocks of a DVB-S2 receiver. This study also tries to determine the deviation from the normal operation in the format of mathematical expressions and simulation results. Based on the obtained results, there is a vulnerability in the chain of the receiver’s blocks that allows a smart jammer to affect the device with low power interference. The notch filter is utilized as a solution to mitigate the interference. In addition, the effects of this technique on the system’s performance are studied. The simulation results show that there is a great improvement after CWI removal according to the Jamming to Signal Ratio (JSR), the Signal-to-Noise Ratio (SNR), and the Bit Error Rate (BER). In some cases, the JSR was reduced by 15 dB, the SNR was improved by 10 dB and BER also improved by 7 dB. However, the notch filter deletes some information from the original signal. This study introduces new ways to clarify the tradeoff between the amount of interference power reduction and removed bandwidth from the signal with notch filtering.
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Same, Mohammad Hossein, Gabriel Gleeton, Gabriel Gandubert, Preslav Ivanov, and Rene Jr Landry. "Multiple Narrowband Interferences Characterization, Detection and Mitigation Using Simplified Welch Algorithm and Notch Filtering." Applied Sciences 11, no. 3 (February 2, 2021): 1331. http://dx.doi.org/10.3390/app11031331.

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By increasing the demand for radio frequency (RF) and access of hackers and spoofers to low price hardware and software defined radios (SDR), radio frequency interference (RFI) became a more frequent and serious problem. In order to increase the security of satellite communication (Satcom) and guarantee the quality of service (QoS) of end users, it is crucial to detect the RFI in the desired bandwidth and protect the receiver with a proper mitigation mechanism. Digital narrowband signals are so sensitive into the interference and because of their special power spectrum shape, it is hard to detect and eliminate the RFI from their bandwidth. Thus, a proper detector requires a high precision and smooth estimation of input signal power spectral density (PSD). By utilizing the presented power spectrum by the simplified Welch method, this article proposes a solid and effective algorithm that can find all necessary interference parameters in the frequency domain while targeting practical implantation for the embedded system with minimum complexity. The proposed detector can detect several multi narrowband interferences and estimate their center frequency, bandwidth, power, start, and end of each interference individually. To remove multiple interferences, a chain of several infinite impulse response (IIR) notch filters with multiplexers is proposed. To minimize damage to the original signal, the bandwidth of each notch is adjusted in a way that maximizes the received signal to noise ratio (SNR) by the receiver. Multiple carrier wave interferences (MCWI) is utilized as a jamming attack to the Digital Video Broadcasting-Satellite-Second Generation (DVB-S2) receiver and performance of a new detector and mitigation system is investigated and validated in both simulation and practical tests. Based on the obtained results, the proposed detector can detect a weak power interference down to −25 dB and track a hopping frequency interference with center frequency variation speed up to 3 kHz. Bit error ratio (BER) performance shows 3 dB improvement by utilizing new adaptive mitigation scenario compared to non-adaptive one. Finally, the protected DVB-S2 can receive the data with SNR close to the normal situation while it is under the attack of the MCWI jammer.
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Li, Zhiyu, and Shanghe Liu. "Interference mechanism analysis and mitigation measures with railway signalling equipment from harmonics in the traction system." Transportation Safety and Environment 2, no. 4 (September 22, 2020): 271–82. http://dx.doi.org/10.1093/tse/tdaa023.

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Abstract With the development of high-speed railway and heavy-haul rail transport in China, a large number of new types of electric locomotives and electric multiple units have been put into operation, improving the efficiency and equipment quality of railway transportation. However, harmonics emitted from the traction system and locomotives often interfere with the railway signalling equipment, which can lead to critical malfunction of the equipment. Based on field test data, this paper analyses the interference coupling mechanism and magnitude of traction harmonics to the signalling equipment using a three-element method of interference. It examines the three essential elements of electromagnetic interference, studies harmonic mitigation measures and proposes to solve the problem of inteference with signalling equipment by installing a passive high-pass filter in the coupling path. After comparing the effects of several types of filters using simulation tests, this paper verified the validity of the method and concluded that a second-order passive filter is the optimal solution for harmonic interference mitigation.
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Ayoughi, S. Arvin, and Wei Yu. "Interference Mitigation via Relaying." IEEE Transactions on Information Theory 65, no. 2 (February 2019): 1137–52. http://dx.doi.org/10.1109/tit.2018.2878452.

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Dissertations / Theses on the topic "Interferece Mitigation"

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Kim, Kihong. "Interference Mitigation in Wireless Communications." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7647.

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The primary objective of this thesis is to design advanced interference resilient schemes for asynchronous slow frequency hopping wireless personal area networks (FH-WPAN) and time division multiple access (TDMA) cellular systems in interference dominant environments. We also propose an interference-resilient power allocation method for multiple-input-multiple-output (MIMO) systems. For asynchronous FH-WPANs in the presence of frequent packet collisions, we propose a single antenna interference canceling dual decision feedback (IC-DDF) receiver based on joint maximum likelihood (ML) detection and recursive least squares (RLS) channel estimation. For the system level performance evaluation, we propose a novel geometric method that combines bit error rate (BER) and the spatial distribution of the traffic load of CCI for the computation of packet error rate (PER). We also derived the probabilities of packet collision in multiple asynchronous FH-WPANs with uniform and nonuniform traffic patterns. For the design of TDMA receivers resilient to CCI in frequency selective channels, we propose a soft output joint detection interference rejection combining delayed decision feedback sequence estimation (JD IRC-DDFSE) scheme. In the proposed scheme, IRC suppresses the CCI, while DDFSE equalizes ISI with reduced complexity. Also, the soft outputs are generated from IRC-DDFSE decision metric to improve the performance of iterative or non-iterative type soft-input outer code decoders. For the design of interference resilient power allocation scheme in MIMO systems, we investigate an adaptive power allocation method using subset antenna transmission (SAT) techniques. Motivated by the observation of capacity imbalance among the multiple parallel sub-channels, the SAT method achieves high spectral efficiency by allocating power on a selected transmit antenna subset. For 4 x 4 V-BLAST MIMO systems, the proposed scheme with SAT showed analogous results. Adaptive modulation schemes combined with the proposed method increase the capacity gains. From a feasibility viewpoint, the proposed method is a practical solution to CCI-limited MIMO systems since it does not require the channel state information (CSI) of CCI.
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Mitchell, Daniel Allan. "Interference Mitigation in Radio Astronomy." University of Sydney. Physics, 2004. http://hdl.handle.net/2123/693.

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This thesis investigates techniques and algorithms for mitigating radio frequency interference (RFI) affecting radio astronomy observations. In the past radio astronomy has generally been performed in radio-quiet geographical locations and unused parts of the radio spectrum, including small protected frequency bands. The increasing use of the entire spectrum and global transmitters such as satellites are forcing the astronomy community to begin implementing active interference cancelling. The amount of harmful interference affecting observations will also increase as future instruments such as the Square Kilometre Array (SKA) are required to use larger bandwidths to reach up to 100 times the current sensitivity levels, and as spectral line observations require observing in bands licensed to other spectrum users. Particular attention is paid to interference cancellation algorithms which make use of reference beams. This has proven to be successful in removing interference from the contaminated astronomical data. Reference antenna cancellers are closely analysed, leading to filters and techniques that can offer improved RFI excision for some important applications. It is shown that pre- and post-correlation reference antenna cancellers give similar results, and an important aspect of the cancellers is the use of a second reference signal when the reference interference-to-noise ratio is low. These modified filters can theoretically offer infinite interference suppression in the voltage domain, equivalent to that of post-correlation interference cancellers, and their internal structure can offer an understanding of the residual RFI and added receiver noise components of a variety of reference antenna techniques. The effect of variable geometric delays is also considered and various filters are compared as a function of the geometric fringe rate.
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Rahman, Md Jahidur. "Interference mitigation and alignment for interference-limited communication systems." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/64173.

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With limited availability of the communication spectrum and ever-increasing demands for high-data-rate services, it is natural to reuse the same time-frequency resource to the greatest degree possible. Depending on the nature of transmission and reception of the users, this leads to different instances of interference, e.g., inter-user interference in an interference network and self-interference in a Full-Duplex (FD) transmission. With a goal to mitigate such interference, in this thesis we investigate emerging interference-limited communication systems, such as FD, Device-to-Device (D2D), and Power Line Communication (PLC). To this end, we propose advanced solutions, namely self-interference mitigation and Interference Alignment (IA). With an objective to reduce the power consumption, we study transceiver design for FD multi-cell Multi-Input Multi-Output (MIMO) systems with guaranteed Quality of Service (QoS). Considering realistic self-interference models and robustness against Channel State Information (CSI) uncertainty, our numerical results reveal transmission scenarios and design parameters for which replacing half-duplex with FD systems is beneficial in terms of power minimization. If the system is not power constrained, however, a natural objective is to optimize the total throughput given a power budget. Nonetheless, throughput maximization underserves the users that experience poor channels, which leads to QoS unfairness. Therefore, we propose a fair transceiver design for FD multi-cell MIMO systems, which can be implemented in a distributed manner. We further extend our design to enforce robustness against CSI uncertainty. As a second contribution within this design theme, the concept of robust fair transceiver design is also extended for D2D communications, where unlike the self-interference in FD transmission, the users suffer from strong inter-user interference. Recognizing that simultaneous multiple connections in PLC contribute to (interuser) interference-limited communication, we introduce IA techniques for PLC networks, for which the results confirm a significant sum-rate improvement. To overcome the implementation burden of CSI availability for IA techniques, we then study Blind Interference Alignment (BIA) for PLC X-network, and show that the characteristics of the PLC channel thwart simple implementation of this technique via impedance modulation. We therefore resort to a transmission scheme with multiple receiving ports, which can achieve the maximum multiplexing gain for this network.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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Jaramillo, Ramirez Daniel. "Interference mitigation techniques for 4G networks." Thesis, Supélec, 2014. http://www.theses.fr/2014SUPL0002/document.

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Les communications sans fils sont devenues un outil fondamental pour les sociétés modernes. Les réseaux cellulaires sont le moyen préféré pour l’accès à Internet. L’augmentation de la capacité du réseau est étroitement liée au problème des interférences. Les réseaux coopératifs ont été largement étudiés dans les années récentes. Cette thèse porte sur deux techniques de coopération dans la voie descendante :La première partie étudie les effets de quantification et délais sur les informations de retour nécessaires pour la mise en opération des différentes techniques d’émission coordonnée, connues sous le nom de CoMP (Coordinated Multipoint Transmission). Cette technique qui promet des augmentations importantes sur la capacité du réseau en conditions idéales, or ses vrais résultats sous le feedback limité doivent être encore décrits de manière analytique. En particulier, pour les modes d’émission connus comme JT (Joint Transmission) et CBF (Coordinated Beamforming), des expressions analytiques ont été déduites pour calculer la capacité du réseau et la probabilité de succès de transmission.Finalement une nouvelle technique de coopération de réseau pour les récepteurs avancés du type SIC (Successive Interference Cancellation) est présentée. La condition mathématique qui garantit des gains de capacité grâce à l’utilisation des récepteurs SIC est obtenue. Pour en profiter, une méthode de coopération est nécessaire pour assurer une adaptation de lien adéquate pour que l’interférence soit décodable et le débit somme soit supérieur à celui atteint avec des récepteurs traditionnels. Cette technique montre des gains importants de capacité pour des utilisateurs en bordure de cellule
Wireless communications have become a fundamental feature of any modern society. In particular, cellular networks are essential for societal welfare but the increasing demand for data traffic set enormous scientific challenges. Increasing the network capacity is closely related to the problem of interference mitigation. In this regard, network cooperation has been studied in recent years and several different techniques have been proposed. In the first part, different transmission techniques commonly referred to as Coordinated Multi-Point Transmission (CoMP), are studied under the effect of feedback quantization and delay, unequal pathloss and other-cell interference (OCI). An analytical framework is provided, which yields closed-form expressions to calculate the ergodic throughput and outage probabilities of Coordinated Beamforming (CBF) and Joint Transmission (JT). The results indicate the optimal configuration for a system using CoMP and provide guidelines and answers to key questions, such as how many transmitters to coordinate, how many antennas to use, how many users to serve, which SNR regime is more convenient, whether to apply CBF or prefer a more complex JT, etc. Second, a new coordination technique at the receiver side is proposed to obtain sum-rate gains by means of Successive Interference Cancellation (SIC). The conditions that guarantee network capacity gains by means of SIC at the receiver are provided. To take advantage of these conditions, network coordination is needed to adapt the rates to be properly decoded at the different users involved. This technique is named Cooperative SIC and is shown to provide significant throughput gains for cell-edge users
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Kpojime, Harold Orduen. "Interference mitigation in cognitive femtocell networks." Thesis, University of Bedfordshire, 2015. http://hdl.handle.net/10547/603521.

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Femtocells have been introduced as a solution to poor indoor coverage in cellular communication which has hugely attracted network operators and stakeholders. However, femtocells are designed to co-exist alongside macrocells providing improved spatial frequency reuse and higher spectrum efficiency to name a few. Therefore, when deployed in the two-tier architecture with macrocells, it is necessary to mitigate the inherent co-tier and cross-tier interference. The integration of cognitive radio (CR) in femtocells introduces the ability of femtocells to dynamically adapt to varying network conditions through learning and reasoning. This research work focuses on the exploitation of cognitive radio in femtocells to mitigate the mutual interference caused in the two-tier architecture. The research work presents original contributions in mitigating interference in femtocells by introducing practical approaches which comprises a power control scheme where femtocells adaptively controls its transmit power levels to reduce the interference it causes in a network. This is especially useful since femtocells are user deployed as this seeks to mitigate interference based on their blind placement in an indoor environment. Hybrid interference mitigation schemes which combine power control and resource/scheduling are also implemented. In a joint threshold power based admittance and contention free resource allocation scheme, the mutual interference between a Femtocell Access Point (FAP) and close-by User Equipments (UE) is mitigated based on admittance. Also, a hybrid scheme where FAPs opportunistically use Resource Blocks (RB) of Macrocell User Equipments (MUE) based on its traffic load use is also employed. Simulation analysis present improvements when these schemes are applied with emphasis in Long Term Evolution (LTE) networks especially in terms of Signal to Interference plus Noise Ratio (SINR).
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Batra, Arun. "Mitigation techniques for severe narrowband interference." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3356201.

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Thesis (Ph. D.)--University of California, San Diego, 2009.
Title from first page of PDF file (viewed June 15, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 129-139).
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Geng, Zhe. "Radar Signal Processing for Interference Mitigation." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3571.

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It is necessary for radars to suppress interferences to near the noise level to achieve the best performance in target detection and measurements. In this dissertation work, innovative signal processing approaches are proposed to effectively mitigate two of the most common types of interferences: jammers and clutter. Two types of radar systems are considered for developing new signal processing algorithms: phased-array radar and multiple-input multiple-output (MIMO) radar. For phased-array radar, an innovative target-clutter feature-based recognition approach termed as Beam-Doppler Image Feature Recognition (BDIFR) is proposed to detect moving targets in inhomogeneous clutter. Moreover, a new ground moving target detection algorithm is proposed for airborne radar. The essence of this algorithm is to compensate for the ground clutter Doppler shift caused by the moving platform and then to cancel the Doppler-compensated clutter using MTI filters that are commonly used in ground-based radar systems. Without the need of clutter estimation, the new algorithms outperform the conventional Space-Time Adaptive Processing (STAP) algorithm in ground moving target detection in inhomogeneous clutter. For MIMO radar, a time-efficient reduced-dimensional clutter suppression algorithm termed as Reduced-dimension Space-time Adaptive Processing (RSTAP) is proposed to minimize the number of the training samples required for clutter estimation. To deal with highly heterogeneous clutter more effectively, we also proposed a robust deterministic STAP algorithm operating on snapshot-to-snapshot basis. For cancelling jammers in the radar mainlobe direction, an innovative jamming elimination approach is proposed based on coherent MIMO radar adaptive beamforming. When combined with mutual information (MI) based cognitive radar transmit waveform design, this new approach can be used to enable spectrum sharing effectively between radar and wireless communication systems. The proposed interference mitigation approaches are validated by carrying out simulations for typical radar operation scenarios. The advantages of the proposed interference mitigation methods over the existing signal processing techniques are demonstrated both analytically and empirically.
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Foutekova, Ellina P. "Interference mitigation and interference avoidance for cellular OFDMA-TDD networks." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3810.

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In recent years, cellular systems based on orthogonal frequency division multiple access – time division duplex (OFDMA-TDD) have gained considerable popularity. Two of the major reasons for this are, on the one hand, that OFDMA enables the receiver to effectively cope with multipath propagation while keeping the complexity low. On the other hand, TDD offers efficient support for cell-specific uplink (UL)/downlink (DL) asymmetry demands by allowing each cell to independently set its UL/DL switching point (SP). However, cell-independent SP gives rise to crossed slots. In particular, crossed slots arise when neighbouring cells use the same slot in opposing link directions, resulting in base station (BS)-to-BS interference and mobile station (MS)-to-MS interference. BS-to-BS interference, in particular, can be quite detrimental due to the exposed location of BSs, which leads to high probability of line-of-sight (LOS) conditions. The aim of this thesis is to address the BS-to-BS interference problem in OFDMA-TDDcellular networks. A simulation-based approach is used to demonstrate the severity of BS-to-BS interference and a signal-to-interference-plus-noise ratio (SINR) equation for OFDMA is formulated to aid system performance analysis. The detrimental effects of crossed slot interference in OFDMA-TDD cellular networks are highlighted by comparing methods specifically targeting the crossed slots interference problem. In particular, the interference avoidance method fixed slot allocation (FSA) is compared against state of the art interference mitigation approaches, viz: random time slot opposing (RTSO) and zone division (ZD). The comparison is done based on Monte Carlo simulations and the main comparison metric is spectral efficiency calculated using the SINR equation formulated in this thesis. The simulation results demonstrate that when LOS conditions among BSs are present, both RTSO and ZD perform worse than FSA for all considered performance metrics. It is concluded from the results that current interference mitigation techniques do not offer an effective solution to the BS-to-BS interference problem. Hence, new interference avoidance methods, which unlike FSA, do not sacrifice the advantages of TDD are open research issues addressed in this thesis. The major contribution of this thesis is a novel cooperative resource balancing technique that offers a solution to the crossed slot problem. The novel concept, termed asymmetry balancing, is targeted towards next-generation cellular systems, envisaged to have ad hoc and multi-hop capabilities. Asymmetry balancing completely avoids crossed slots by keeping the TDD SPs synchronised among BSs. At the same time, the advantages of TDD are retained, which is enabled by introducing cooperation among the entities in the network. If a cell faces resource shortage in one link direction, while having free resources in the opposite link direction, the free resources can be used to support the overloaded link direction. In particular, traffic can be offloaded to near-by mobile stations at neighbouring cells that have available resources. To model the gains attained with asymmetry balancing, a mathematical framework is developed which is verified by Monte Carlo simulations. In addition, asymmetry balancing is compared against both ZD and FSA based on simulations and the results demonstrate the superior performance of asymmetry balancing. It can be concluded that the novel interference avoidance approach is a very promising candidate to.
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Jamp, Joe Izu. "Interference mitigation techniques for ultra-wideband systems." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3254427.

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Thesis (Ph. D.)--University of California, San Diego, 2007.
Title from first page of PDF file (viewed May 2, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 126-129).
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Dartmann, Guido [Verfasser]. "Interference mitigation in multicell networks / Guido Dartmann." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1046651927/34.

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Books on the topic "Interferece Mitigation"

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Society, IEEE Electromagnetic Compatibility, ed. Interference mitigation: Theory and application. New York: IEEE Press, 1996.

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Wu, Renbiao, Wenyi Wang, Dan Lu, Lu Wang, and Qiongqiong Jia. Adaptive Interference Mitigation in GNSS. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-5571-3.

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Slattery, Kevin. Platform interference in wireless systems: Models, measurement, and mitigation. Amsterdam: Newnes/Elsevier, 2008.

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Sithamparanathan, Kandeepan. Cognitive radio techniques: Spectrum sensing, interference mitigation, and localization. Boston, Mass: Artech House, 2012.

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Carroll, Michael, Hollis Stambaugh, Joseph Kolesar, Stephen Berger, Heidi Benaman, and Zachary Varwig. A Guidebook for Mitigating Disruptive WiFi Interference at Airports. Washington, D.C.: Transportation Research Board, 2015. http://dx.doi.org/10.17226/22187.

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National Research Council (U.S.). Transportation Research Board, Airport Cooperative Research Program, and United States. Federal Aviation Administration, eds. A guidebook for mitigating disruptive WiFi interference at airports. Washington, D.C: Transportation Research Board, 2015.

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Liu, Sicong. Research on the Key Technologies in Narrowband Interference and Impulsive Noise Mitigation and Cancellation. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-4724-9.

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Fanucci, Luca. An experimental approach to CDMA and interference mitigation: From system architecture to hardware testing through VLSI design. New York: Springer, 2011.

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Fanucci, Luca. An experimental approach to CDMA and interference mitigation: From system architecture to hardware testing through VLSI design. Boston: Kluwer Academic, 2004.

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Climate Change Strategy and Technology Innovation Act of 2001: Report of the Committee on Governmental Affairs, United States Senate, together with additional views to accompany S. 1008, to amend the Energy Policy Act of 1992 to develop the United States climate change response strategy with the goal of stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system ... Washington: U.S. G.P.O., 2001.

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Book chapters on the topic "Interferece Mitigation"

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Ni, Jiqing, Bingquan Li, Zesong Fei, and Jingming Kuang. "Interference Mitigation Based on Enhanced Interference PMI Notification." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 438–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30493-4_42.

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Tong, Luyen, Cuong Nguyen, and Duy Le. "An Effective Beamformer for Interference Mitigation." In Intelligent Systems and Networks, 630–39. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3394-3_73.

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Wu, Renbiao, Wenyi Wang, Dan Lu, Lu Wang, and Qiongqiong Jia. "Erratum to: Adaptive Interference Mitigation in GNSS." In Navigation: Science and Technology, E1. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-5571-3_7.

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Ness, Reto, Steven Thoen, Liesbet Perre, Bert Gyselinckx, and Marc Engels. "Narrowband Interference Mitigation in OFDM-Based WLANs." In Multi-Carrier Spread Spectrum & Related Topics, 243–50. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4463-0_28.

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Huang, Yan, Lei Zhang, Jie Li, Mingliang Tao, Zhanye Chen, and Wei Hong. "Machine Learning Methods for SAR Interference Mitigation." In Synthetic Aperture Radar (SAR) Data Applications, 113–46. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-21225-3_6.

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AlQerm, Ismail, and Basem Shihada. "Cognitive Aware Interference Mitigation Scheme for LTE Femtocells." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 607–19. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24540-9_50.

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Meghalatha, C. K., K. S. Sravan, K. Krishna Chaitanya, and B. Seetha Ramanjaneyulu. "Inter-user Interference Mitigation Scheme for IEEE 802.15.4." In Lecture Notes in Electrical Engineering, 701–7. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3828-5_73.

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Xu, Yuhua, and Alagan Anpalagan. "Distributed Interference Mitigation in Time-Varying Radio Environment." In SpringerBriefs in Electrical and Computer Engineering, 11–27. Singapore: Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-10-0024-9_2.

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Gezici, Sinan, Hisashi Kobayashi, and H. Vincent Poor. "Multiple-Access Interference Mitigation in Ultra Wideband Systems." In Ultra Wideband Wireless Communication, 227–53. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/9780470042397.ch10.

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Ali, Mohamad Jaafar, Hassine Moungla, Mohamed Younis, and Ahmed Mehaoua. "Interference Mitigation Techniques in Wireless Body Area Networks." In Mission-Oriented Sensor Networks and Systems: Art and Science, 677–718. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-92384-0_19.

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Conference papers on the topic "Interferece Mitigation"

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Du, Yanxia, Zitao Jiang, and Minxu Lu. "Detection and Mitigation of AC Interference on 200km Pipeline." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90681.

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The AC interference on pipelines caused by nearby HVAC power lines and electrified railways can lead to electric shock hazard and AC corrosion, which threatens the safety of pipeline and has attracted more and more attention. A 300km-long pipeline in the north of China is close to many HVAC power lines and electrified railways and there exists a high risk of AC interference. A detection of AC interference has been done along the pipeline and the results indicate that AC interference is severe due to high AC voltage and AC current density. The mitigation scheme of the pipeline is designed with the aid of computer simulation software, based on which the mitigations are constructed. The field measurements show that the mitigation effect is good.
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van Nieuwpoort, Rob V. "Towards exascale real-time RFI mitigation." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833534.

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Qiu, S. Roger, Justin E. Wolfe, Anthony M. Monterrosa, Michael D. Feit, Thomas V. Pistor, and Christopher J. Stolz. "Searching for optimal mitigation geometry for multilayer high reflector coatings." In Optical Interference Coatings. Washington, D.C.: OSA, 2010. http://dx.doi.org/10.1364/oic.2010.fa3.

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SASSOLAS, Benoit, Nicolas STRANIERO, Jerôme DEGALLAIX, Christophe Michel, Laurent Pinard, Julien Teillon, Laurent Balzarini, et al. "Mitigation of the spiral pattern induced by the planetary motion." In Optical Interference Coatings. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/oic.2016.mb.6.

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Das, Suman, and Harish Viswanathan. "Interference Mitigation Through Interference Avoidance." In 2006 Fortieth Asilomar Conference on Signals, Systems and Computers. IEEE, 2006. http://dx.doi.org/10.1109/acssc.2006.355075.

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Zyoud, Al-Hareth, Mohamed Hadi Habaebi, Jalel Chebil, and Md Rafiqul Islam. "Femtocell interference mitigation." In 2012 IEEE Control and System Graduate Research Colloquium (ICSGRC). IEEE, 2012. http://dx.doi.org/10.1109/icsgrc.2012.6287142.

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Sureshkumar, S., Pravin Ashok Raybole, Sanjeet Rai, and Ankur. "RFI characterisation and mitigation at upgraded GMRT." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833545.

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Wyckoff, Peter S., and Gregory Hellbourg. "Polar excision for radio frequency interference mitigation in radio astronomy." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833547.

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Ganesan, R., and S. K. Das. "Power line transient interference and mitigation techniques." In 8th International Conference on Electromagnetic Interference and Compatibility. IEEE, 2003. http://dx.doi.org/10.1109/icemic.2003.237787.

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Schoenwald, Adam J., Armen Gholian, Damon C. Bradley, Mark Wong, Priscilla N. Mohammed, and Jeffrey R. Piepmeier. "RFI detection and mitigation using independent component analysis as a pre-processor." In 2016 Radio Frequency Interference (RFI). IEEE, 2016. http://dx.doi.org/10.1109/rfint.2016.7833540.

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Reports on the topic "Interferece Mitigation"

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Kondi, Lisimachos P. Robust Interference Mitigation and Spread Spectrum Signaling. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada444129.

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Bradaric, Ivan, Gerard T. Capraro, and Donald D. Weiner. Ultra Wide Band (UWB) Interference - Assessment and Mitigation Studies. Fort Belvoir, VA: Defense Technical Information Center, February 2006. http://dx.doi.org/10.21236/ada446049.

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Saulnier, Gary J., and Catalina A. Silva. Comparison of Time and Transform Domain Interference Mitigation Techniques. Fort Belvoir, VA: Defense Technical Information Center, July 1998. http://dx.doi.org/10.21236/ada351524.

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Karlson, Benjamin, and Bryan Edward Miller. Wind Turbine Radar Interference Mitigation (WTRIM) Modeling & Simulation Tools Catalog. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1528816.

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Liu, Xiangqian. Co-channel Interference Mitigation for Robust Coexistence of Frequency Hopped Networks. Fort Belvoir, VA: Defense Technical Information Center, September 2006. http://dx.doi.org/10.21236/ada482118.

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Lei, Ming, Alexandra Duel-Hallen, and Hans Hallen. Reliable Adaptive Modulation and Interference Mitigation for Mobile Radio Slow Frequency Hopping Channels. Fort Belvoir, VA: Defense Technical Information Center, August 2008. http://dx.doi.org/10.21236/ada500343.

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Barrowes, Benjamin, Dan Glaser, Brian Quinn, Mikheil Prishvin, and Fridon Shubitidze. Unmanned aerial systems electromagnetic induction sensor development : evaluation of commercial-off-the-shelf unmanned aerial system motor interference and mitigation in airborne electromagnetic induction sensors. Engineer Research and Development Center (U.S.), September 2019. http://dx.doi.org/10.21079/11681/34104.

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