Bibliografías temáticas / W-OFDM

Literatura académica sobre el tema "W-OFDM"

Autor: Grafiati
Publicado: 14 de marzo de 2023

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Artículos de revistas sobre el tema "W-OFDM"

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Yonis, Aws Zuheer y Khalid Khalil Mohammed. "Investigation of pattern division multiple access technique in wireless communication networks". Indonesian Journal of Electrical Engineering and Computer Science 26, n.º 1 (1 de abril de 2022): 296. http://dx.doi.org/10.11591/ijeecs.v26.i1.pp296-303.

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Recently, <span>pattern division multiple access (PDMA) is a non-orthogonal multiple access system that is now being developed in next-generation telecoms to address the requirement for mass connectivity. The core premise of non-orthogonal multiple access is to simultaneously serve multiple users with varying power levels across the same spectrum resources such as time, frequency, code, as well as space with minimal inter-user interference. A simulation analysis of significant technology enhancements focusing on PDMA aims to describe the benefits of the two plans now being examined by the third-generation partnership project for 5G technologies, namely filtered orthogonal frequency division multiplexing (F-OFDM) and windowed orthogonal frequency division multiplexing (W-OFDM), and to compare them to alternative modulation processes such as 16, 32, and 128 modulations. The research results explained the PDMA is less bit error rate used in multiple access technologies compare with W-OFDM and F-OFDM.</span>
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Ahmed, Abu Shakil, Husam Al-amaireh y Zsolt Kollar. "Multicarrier Modulation Schemes for 5G Wireless Access". ECTI Transactions on Computer and Information Technology (ECTI-CIT) 16, n.º 4 (24 de septiembre de 2022): 378–92. http://dx.doi.org/10.37936/ecti-cit.2022164.248710.

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The 5G wireless access technology will supersede its predecessor, 4G, in the current decade, at first coexisting with it and later as a standalone technology. This work examines and compares the performance of the following orthogonal multicarrier schemes: Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM), Windowed Orthogonal Frequency Division Multiplexing (W-OFDM), Filtered Orthogonal Frequency Division Multiplexing (F-OFDM), Universal Filtered Multi-Carrier (UFMC), and Filter Bank Multi-Carrier (FBMC). The system architecture of each scheme is investigated while considering the performance in fading channel models. The simulation was performed using a standard set of parameters, and the performance was appraised based on Power Spectral Density (PSD), Peak to Average Power Ratio (PAPR), Complementary Cumulative Distribution Function (CCDF) of PAPR, Bit Error Rate (BER), and Signal to Noise Ratio (SNR). In addition, a comprehensive analysis is presented concerning filter or window implementation, filtering method, orthogonality, roll-off rate, spectral leakage, spectral efficiency, computational complexity, and runtime complexity. Based on the results, each scheme has its advantages and disadvantages compared with the other methods. FBMC, F-OFDM, and W-OFDM are preferred for better spectrum utilization, transmission accuracy, and power efficiency, respectively. UFMC offers a fine balance between these multicarrier schemes. Therefore, the modulation scheme for the future physical layer will strongly depend on the requirements.
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Ali, Adnan Hussein, Alaa Desher Farhood y Maham Kamil Naji. "Analysis of a framework implementation of the transceiver performances for integrating optical technologies and wireless LAN based on OFDM-RoF". International Journal of Electrical and Computer Engineering (IJECE) 10, n.º 4 (1 de agosto de 2020): 4252. http://dx.doi.org/10.11591/ijece.v10i4.pp4252-4260.

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The greatest advantages of optical fibers are the possibility of extending data rate transmission and propagation distances. Being a multi-carrier technique, the orthogonal frequency division multiplexing (OFDM) can be applicable in hybrid optical-wireless systems design owing to its best spectral efficiency for the interferences of radio frequency (RF) and minor multi-path distortion. An optical OFDM-RoF-based wireless local area network (W-LAN) system has been studied and evaluated in this work. The outline for integrating an optical technology and wireless in a single system was provided with the existence of OFDM-RoF technology and the microstrip patch antenna; these were applied in the Optisystem communication tool. The design of the proposed OFDM-RoF system is aimed at supporting mm-wave services and multi-standard operations. The proposed system can operate on different RF bands using different modulation schemes like 4,16 and 64QAM, that may be associated to OFDM and multidata rates up to 5 Gbps. The results demonstrate the robustness of the integrated optical wireless link in propagating OFDM-RoF-based WLAN signals across optical fibers.
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Kotrys, Robert. "ITERACYJNY ODBIÓR MULTI-SYMBOLI OFDM W SIECIACH WLAN". PRZEGLĄD TELEKOMUNIKACYJNY - WIADOMOŚCI TELEKOMUNIKACYJNE 1, n.º 4 (5 de abril de 2015): 266–69. http://dx.doi.org/10.15199/59.2015.4.66.

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Mozoła, Piotr. "ANALIZA WŁASNOŚCI WYBRANYCH MODELI KOREKTORÓW W ODBIORNIKU OFDM". PRZEGLĄD TELEKOMUNIKACYJNY - WIADOMOŚCI TELEKOMUNIKACYJNE 1, n.º 4 (5 de abril de 2015): 314–17. http://dx.doi.org/10.15199/59.2015.4.78.

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Idrees, Nazar Muhammad, Zijie Lu, Muhammad Saqlain, Hongqi Zhang, Shiwei Wang, Lu Zhang y Xianbin Yu. "A W-Band Communication and Sensing Convergence System Enabled by Single OFDM Waveform". Micromachines 13, n.º 2 (17 de febrero de 2022): 312. http://dx.doi.org/10.3390/mi13020312.

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Convergence of communication and sensing is highly desirable for future wireless systems. This paper presents a converged millimeter-wave system using a single orthogonal frequency division multiplexing (OFDM) waveform and proposes a novel method, based on the zero-delay shift for the received echoes, to extend the sensing range beyond the cyclic prefix interval (CPI). Both simulation and proof-of-concept experiments evaluate the performance of the proposed system at 97 GHz. The experiment uses a W-band heterodyne structure to transmit/receive an OFDM waveform featuring 3.9 GHz bandwidth with quadrature amplitude modulation (16-QAM). The proposed approach successfully achieves a range resolution of 0.042 m and a speed resolution of 0.79 m/s with an extended range, which agree well with the simulation. Meanwhile, based on the same OFDM waveform, it also achieves a bit-error-rate (BER) 10−2, below the forward error-correction threshold. Our proposed system is expected to be a significant step forward for future wireless convergence applications.
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7

An, Changyoung, Byeongjae Kim y Heung-Gyoon Ryu. "Design and Performance Evaluation of W-OFDM System for 5G Mobile Communication". Journal of the Institute of Electronics and Information Engineers 54, n.º 10 (31 de octubre de 2017): 3–10. http://dx.doi.org/10.5573/ieie.2017.54.10.3.

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8

Bacque, Ludovic, Gregoire Nanfack-Nkondem, Philippe Bouysse, Guillaume Neveux, Jean Michel Nebus, William Rebernak, Luc Lapierre, Denis Barataud y Raymond Quéré. "Implementation of dynamic bias and digital predistortion to enhance efficiency and linearity in a 100 W RF amplifier with OFDM signal". International Journal of Microwave and Wireless Technologies 1, n.º 4 (22 de junio de 2009): 261–68. http://dx.doi.org/10.1017/s1759078709990195.

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This paper presents a technique that enables both efficiency and linearity enhancements of power amplifiers (PA) used in communication systems. It consists in the implementation of a dynamic bias control combined with digital base-band predistortion. The aim of this paper is to describe a methodology and successive steps of the design procedure to reach optimum performances in terms of power added efficiency (PAE) and linearity. It is here applied to a 100 W wide-band lateral diffused metal oxide semiconductor (LDMOS) push–pull amplifier (50–500 MHz) driven by orthogonal frequency division multiplexing (OFDM) signals. When the amplifier is driven by a continuous wave (CW) signal and operates at a constant 28 V drain bias voltage, it exhibits 100 W output power and 60% PAE. When it is driven by an OFDM signal, a 10 dB output power back-off is necessary to have a −25 dBc adjacent channel power ratio (ACPR) and PAE decreases down to 10%. By properly implementing an envelope tracking bias system, 40 W output power along with 38% PAE and −27 dBc ACPR have been reached. Applying base-band digital predistortion provides additional linearity improvements at high PAE (for only one point PAE lost, a 5 dB improvement is obtained for ACPR).
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9

Idrees, Nazar Muhammad, Zijie Lu, Muhammad Saqlain, Hongqi Zhang, Shiwei Wang, Lu Zhang y Xianbin Yu. "Improvement in Sensing Accuracy of an OFDM-Based W-Band System". Journal of Communications and Information Networks 7, n.º 1 (marzo de 2022): 37–47. http://dx.doi.org/10.23919/jcin.2022.9745480.

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Blok, Marek. "KLASYFIKATOR SVM W ZASTOSOWANIU DO SYNCHRONIZACJI SYGNAŁU OFDM ZNIEKSZTAŁCONEGO PRZEZ KANAŁ WIELODROGOWY". PRZEGLĄD TELEKOMUNIKACYJNY - WIADOMOŚCI TELEKOMUNIKACYJNE 1, n.º 4 (9 de agosto de 2022): 322–25. http://dx.doi.org/10.15199/59.2022.4.70.

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Tesis sobre el tema "W-OFDM"

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Piechocki, Robert Jan. "Space-time techniques for W-CDMA and OFDM wireless networks". Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269236.

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Thiele, Lars [Verfasser], Holger [Akademischer Betreuer] Boche y Robert W. [Akademischer Betreuer] Heath. "Räumliches Interferenzmanagement in OFDM-basierten zellularen Systemen / Lars Thiele. Gutachter: Holger Boche ; Robert W. Heath. Betreuer: Holger Boche". München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1042803765/34.

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3

Hurst, James. "An investigation into methods for the correction of frequency offset in OFDM systems". Thesis, University of Huddersfield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327169.

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Capítulos de libros sobre el tema "W-OFDM"

1

"requirement of memory is large. So in this paper we propose an ae q p pu i r oe e a ce h bo a sf e de emo ty h es slli nr r d ie e r to o r en n c ni i s - struction of autocorrela (2) Nyquist sam pr u o le so isoe [ ] e [ ] a i , tp p i or oon cs t non w sn u struction p rop f os aaew he oani hh orrfebg ea s t si modnog oy n o ds tnhlceap eg oir fd . o rr - mance in th st t mm e wes i t t] a h ee p ] l , raota io ch nbfausnecdti on th wei th in d s ir uebc -t recon- plexity. In t mc ueie hn s o dr tauhm , Ct pilloA Fs t [ o i o8 a b lt e aw c s tr iicrcs pl a cg gie mu oon - eh d be y ha e constructed al u cty e o rI nNe at hqt oi s n fe u nh m c td p m io nC s , a[ i7Fn dm iisst ew bbn sh iii ge etn ae l detection is gtr e et d ac r ie n oo f en t pio e fa n s hen sig p n re nals, multi-c ae o r re i et t r sc n ig nl sdea la r i ’ sy gto . g n uI onrm be h e rt mio fe nats uf coub , ctC io AnF , ainsd obtain ai gog rr ef f r ac een do yynpp , eeaoo the length o lsy , m l pl dttir et ccef ir x ( er signal’s number ricP ) p g . Ie ian fe s u te C u rP m e se s t if fce su uinw ea aorrfrriiteehrresstaayU ne d rs i t e system model, OFDM signal is cy-". En Network Security and Communication Engineering, 522–23. CRC Press, 2015. http://dx.doi.org/10.1201/b18660-134.

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Actas de conferencias sobre el tema "W-OFDM"

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Hussain, Khawar y Roberto Lopez-Valcarce. "Optimal Window Design for W-OFDM". En ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2020. http://dx.doi.org/10.1109/icassp40776.2020.9053075.

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Mahmud, Md Hasan, MD Maruf Hossain, Abid Anjum Khan, Shanjid Ahmed, Mirza Abir Mahmud y Md Hafizul Islam. "Performance Analysis of OFDM, W-OFDM and F-OFDM Under Rayleigh Fading Channel for 5G Wireless Communication". En 2020 3rd International Conference on Intelligent Sustainable Systems (ICISS). IEEE, 2020. http://dx.doi.org/10.1109/iciss49785.2020.9316134.

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Idrees, Nazar Muhammad, Zijie Lu, Muhammad Saqlain, Hongqi Zhang, Shiwei Wang, Lu Zhang y Xianbin Yu. "Sensing Accuracy Improvement of an OFDM W-band System". En 2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). IEEE, 2021. http://dx.doi.org/10.1109/irmmw-thz50926.2021.9566947.

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4

Lopes, V., P. Laurencio y M. C. R. Medeiros. "W-Band OFDM-RoF system employing optical up-conversion". En 2014 16th International Conference on Transparent Optical Networks (ICTON). IEEE, 2014. http://dx.doi.org/10.1109/icton.2014.6876580.

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Di Stasio, Francesco, Marina Mondin y Fred Daneshgaran. "Multirate 5G Downlink Performance Comparison for f-OFDM and w-OFDM Schemes with Different Numerologies". En 2018 International Symposium on Networks, Computers and Communications (ISNCC). IEEE, 2018. http://dx.doi.org/10.1109/isncc.2018.8530905.

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Sharma, Vishal, Harleen Kaur y Gurpreet Singh. "BER Assessment of MIMO Incorporated W-OFDM Wireless Communication System". En 2015 Fifth International Conference on Advanced Computing & Communication Technologies (ACCT). IEEE, 2015. http://dx.doi.org/10.1109/acct.2015.94.

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An, Changyoung, Byeongjae Kim y Heung-Gyoon Ryu. "Design of W-OFDM and nonlinear performance comparison for 5G waveform". En 2016 International Conference on Information and Communication Technology Convergence (ICTC). IEEE, 2016. http://dx.doi.org/10.1109/ictc.2016.7763353.

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Huang, Hou-Tzu, Chun-Ting Lin, Huan-Ching Liu, Hsun-Hao Hsu, Meng-Fan Wu, Chi-Hsiang Lin, Che-Hao Li y Chia-Chien Wei. "W-band DD-OFDM-RoF system employing pilot-aided PAPR reduction". En 2014 Asia-Pacific Microwave Conference (APMC). IEEE, 2014. http://dx.doi.org/10.1109/mwp.2014.6994592.

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Li, Che-Hao, Meng-Fan Wu, Chi-Hsiang Lin y Chun-Ting Lin. "W-band OFDM RoF System with Simple Envelope Detector Down-Conversion". En Optical Fiber Communication Conference. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/ofc.2015.w4g.6.

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An, Changyoung, Byeongjae Kim y Heung-Gyoon Ryu. "Waveform Comparison and Nonlinearity Sensitivities of FBMC, UFMC and W-OFDM Systems". En Eighth International Conference on Networks & Communications. Academy & Industry Research Collaboration Center (AIRCC), 2016. http://dx.doi.org/10.5121/csit.2016.61508.

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