Zaloguj się

Gotowe bibliografie tematyczne / Cooperative Relaying Systems / Artykuły w czasopismach

Kliknij ten link, aby zobaczyć inne rodzaje publikacji na ten temat: Cooperative Relaying Systems.

Artykuły w czasopismach na temat „Cooperative Relaying Systems”

Autor: Grafiati

Data publikacji: 6 września 2023

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Sprawdź 50 najlepszych artykułów w czasopismach naukowych na temat „Cooperative Relaying Systems”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Przeglądaj artykuły w czasopismach z różnych dziedzin i twórz odpowiednie bibliografie.

1

WANG, Jingjing, Lingwei XU, Xinli DONG, Xinjie WANG, Wei SHI i T. Aaron GULLIVER. "Performance Analysis of DF Relaying Cooperative Systems". IEICE Transactions on Communications E99.B, nr 7 (2016): 1577–83. http://dx.doi.org/10.1587/transcom.2015ebp3455.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

2

Bastami, Ali H., i Ali Olfat. "Optimal incremental relaying in cooperative diversity systems". IET Communications 7, nr 2 (22.01.2013): 152–68. http://dx.doi.org/10.1049/iet-com.2012.0178.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

3

Li, Guobing, Shihua Zhu i Hui Hui. "Power allocation in opportunistic cooperative relaying systems". Frontiers of Electrical and Electronic Engineering in China 4, nr 2 (6.03.2009): 149–54. http://dx.doi.org/10.1007/s11460-009-0044-8.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

4

Alimo, David, Masanori Hamamura i Saifur Rahman Sabuj. "Threshold-Based User-Assisted Cooperative Relaying in Beamspace Massive MIMO NOMA Systems". Sensors 22, nr 19 (30.09.2022): 7445. http://dx.doi.org/10.3390/s22197445.

Pełny tekst źródła

Streszczenie:

The incorporation of user-assisted cooperative relaying into beamspace massive multiple-input multiple-output (mMIMO) non-orthogonal multiple access (NOMA) system can extend the coverage area and improve the spectral and energy efficiency for millimeter wave (mmWave) communications when a dynamic cluster of mobile user terminals (MUTs) is formed within a beam. We propose threshold-based user-assisted cooperative relaying into a beamspace mMIMO NOMA system in a downlink scenario. Specifically, the intermediate MUTs between the next-generation base station (gNB) and the cell-edge MUT become relaying MUTs after the successful decoding of the signal of the cell-edge MUT only when they meet the predetermined signal-to-interference plus noise ratio (SINR) threshold. A zero forcing (ZF) precoder and iterative power allocation are used to minimize both inter- and intra-beam interferences to maximize the system sum rate. We then evaluate the performance of this system in a delay-intolerant cell-edge MUT scenario. Moreover, the outage probability of the cell-edge MUT of the proposed scheme is investigated and an analytic expression is derived. Simulation results confirm that the proposed threshold-based user-assisted cooperative relaying beamspace mMIMO NOMA system outperforms the user-assisted cooperative relaying in beamspace mMIMO NOMA, beamspace MIMO-NOMA, and beamspace MIMO orthogonal multiple access (OMA) systems in terms of spectrum efficiency, energy efficiency, and outage probability.

Style APA, Harvard, Vancouver, ISO itp.

5

Al-Mistarihi, Mamoun F., Rami Mohaisen i Khalid A. Darabkh. "Performance evaluation of decode and forward cooperative diversity systems over nakagami-m fading channels with non-identical interferers". International Journal of Electrical and Computer Engineering (IJECE) 10, nr 5 (1.10.2020): 5316. http://dx.doi.org/10.11591/ijece.v10i5.pp5316-5328.

Pełny tekst źródła

Streszczenie:

The deficiencies of regular cooperative relaying schemes were the main reason behind the development of Incremental Relaying (IR). Fixed relaying is one of the regular cooperative relaying schemes and it relies on using the relay node to help in transmitting the signal of the source towards the destination despite the channel’s condition. However, adaptive relaying methods allocate the channel resources efficiently; thus, such methods have drawn the attention of researchers in recent years. In this study, we analyze a two-hop Decode-and-Forward (DF) IR system’s performance via Nakagami-m fading channels with the existence of the several L distinguishable interferers placed close to the destination which diminishes the overall performance of the system due to the co-channel interference. Tight formulas for the Bit Error Rate (BER) and the Outage Probability (OP) are drawn. The assumptions are consolidated by numerical calculations.

Style APA, Harvard, Vancouver, ISO itp.

6

Wang, Zih-Sin, Liang-Hung Lin, Jyh-Horng Wen, Yen-Ju Lin i Chien-Erh Weng. "Performance Analysis of AF Cooperative Relaying Networks with SWIPT". Electronics 11, nr 4 (15.02.2022): 589. http://dx.doi.org/10.3390/electronics11040589.

Pełny tekst źródła

Streszczenie:

Cooperative communication networks have received more attention due to its ability to improve the signal quality of terminal devices by spatial diversity. Under recent advance in internet of things, In order to extend the service life of terminal devices powered by battery, simultaneous wireless information and power transfer (SWIPT) technique has been emphasize. The terminal devices can harvest energy and decode information from the same radio frequency (RF) signal using by SWIPT technique. In this paper, we combine both techniques to study the performance of both conventional cooperative relaying networks without SWIPT and cooperative relaying networks with SWIPT under an amplify-and-forward (AF) relaying network. To the best of our knowledge, no one simultaneously studies and compares the performance of both systems. Therefore, the outage probabilities of both systems are carried out, and numerical results are compared in this paper. The main results include: (1) Compared with conventional cooperative communication, the cooperative communication with SWIPT has better outage probability only when the distance between relay node and source node is less than one. It implies that, to outperform the conventional cooperative communication, the relay node should harvest enough energy for signal transmission. (2) With the diversity of direct path and relay path, the outage probability of cooperative communication with EH under an AF relaying network has been significantly reduced.

Style APA, Harvard, Vancouver, ISO itp.

7

Ho Van, Khuong, i Kong Hyung Yun. "Energy Savings in OFDM Systems through Cooperative Relaying". ETRI Journal 29, nr 1 (9.02.2007): 27–35. http://dx.doi.org/10.4218/etrij.07.0106.0085.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

8

Shengnan Yan. "Cooperative Relaying in Large-Coverage Cognitive Radio Systems". International Journal of Digital Content Technology and its Applications 7, nr 5 (15.03.2013): 847–54. http://dx.doi.org/10.4156/jdcta.vol7.issue5.99.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

9

Elmenreich, W., N. Marchenko, H. Adam, C. Hofbauer, G. Brandner, C. Bettstetter i M. Huemer. "Building blocks of cooperative relaying in wireless systems". e & i Elektrotechnik und Informationstechnik 125, nr 10 (październik 2008): 353–59. http://dx.doi.org/10.1007/s00502-008-0571-7.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

10

Van, Hoang Thien, Hoang-Phuong Van, Danh Hong Le, Ma Quoc Phu i Hoang-Sy Nguyen. "Outage probability analysis for hybrid TSR-PSR based SWIPT systems over log-normal fading channels". International Journal of Electrical and Computer Engineering (IJECE) 11, nr 5 (1.10.2021): 4233. http://dx.doi.org/10.11591/ijece.v11i5.pp4233-4240.

Pełny tekst źródła

Streszczenie:

Employing simultaneous information and power transfer (SWIPT) technology in cooperative relaying networks has drawn considerable attention from the research community. We can find several studies that focus on Rayleigh and Nakagami-m fading channels, which are used to model outdoor scenarios. Differing itself from several existing studies, this study is conducted in the context of indoor scenario modelled by log-normal fading channels. Specifically, we investigate a so-called hybrid time switching relaying (TSR)-power splitting relaying (PSR) protocol in an energy-constrained cooperative amplify-and-forward (AF) relaying network. We evaluate the system performance with outage probability (OP) by analytically expressing and simulating it with Monte Carlo method. The impact of power-splitting (PS), time-switching (TS) and signal-to-noise ratio (SNR) on the OP was as well investigated. Subsequently, the system performance of TSR, PSR and hybrid TSR-PSR schemes were compared. The simulation results are relatively accurate because they align well with the theory.

Style APA, Harvard, Vancouver, ISO itp.

11

Cao, Ning, Yuchang Ye i Minghe Mao. "The Effect of Misdetection Probability on the Performance of Cooperative-Relaying-Based Cognitive Radio Systems". Mobile Information Systems 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1051632.

Pełny tekst źródła

Streszczenie:

Cognitive radio (CR) is a promising solution to address the more and more congested radio spectrum. Cooperative relaying can provide a better transmission performance for the secondary user (SU), while the performance of the primary user (PU, also named licensed user) should be preferentially protected especially when there is misdetection probability. In this paper, in order to keep the PU away from outage caused by the interference from the SU under a certain signal-to-noise ratio (SNR), the maximum SNR for the SU can be derived by using the rate decaying factor (RDF). Then, based on the maximum channel gain and the maximum SNR, the outage probability is analyzed using decode-and-forward (DF) relaying and amplify-and-forward (AF) relaying schemes. Numerical results show that the outage probability decreases when the power allocation factor increases for DF strategy, while the outage probability has error floor when the power allocation factor increases for AF strategy. And the relaying scheme based on the maximum channel gain outperforms that based on the maximum SNR when the power allocation factor and detection probability are small, while the relaying scheme based on the maximum SNR outperforms that based on the maximum channel gain when the power allocation factor is large. What is more, AF relaying has better outage performance in the practical implementation.

Style APA, Harvard, Vancouver, ISO itp.

12

Gheth, Waled, Khaled M. Rabie, Bamidele Adebisi, Muhammad Ijaz i Georgina Harris. "Performance Analysis of Cooperative and Non-Cooperative Relaying over VLC Channels". Sensors 20, nr 13 (30.06.2020): 3660. http://dx.doi.org/10.3390/s20133660.

Pełny tekst źródła

Streszczenie:

The line-of-sight (LoS) channel is one of the requirements for efficient data transmission in visible-light communications (VLC), but this cannot always be guaranteed in indoor applications for a variety of reasons, such as moving objects and the layout of rooms. The relay-assisted VLC system is one of the techniques that can be used to address this issue and ensures seamless connectivity. This paper investigates the performance of half-duplex (HD) conventional DF relay system and cooperative systems (i.e., selective DF (SDF) and incremental DF (IDF)) over VLC channels in terms of outage probability and energy consumption. Analytical expressions for both outage probability and the minimum energy-per-bit performance of the aforementioned relaying systems are derived. Furthermore, Monte Carlo simulations are provided throughout the paper to validate the derived expressions. The results show that exploiting SDF and IDF relaying schemes can achieve approximately 25% and 15% outage probability enhancement compared to single-hop and DF protocols, respectively. The results also demonstrate that the performance of the single-hop VLC system deteriorates when the end-to-end distances become larger. For example, when the vertical distance is 3.5m, the single-hop approach consumes 20%, 40% and 45% more energy in comparison to the DF, SDF, and IDF approaches, respectively.

Style APA, Harvard, Vancouver, ISO itp.

13

Andrawes, Admoon, Rosdiadee Nordin i Mahamod Ismail. "Wireless Energy Harvesting with Cooperative Relaying under the Best Relay Selection Scheme". Energies 12, nr 5 (7.03.2019): 892. http://dx.doi.org/10.3390/en12050892.

Pełny tekst źródła

Streszczenie:

One of the most notable challenges in wireless communications is energy scarcity, which has attracted considerable attention in Fifth Generation (5G) wireless network research. This paper investigates the performance of energy harvesting (EH) relays under the best relay selection (BRS) scheme. The results show degradation of spectral efficiency (SE) due to EH relaying compared with conventional cooperative relaying (CR). Conversely, EH relaying provides a positive gain compared with conventional CR, increasing the lifetime of the network and decreasing energy consumption (EC) and operational cost. Moreover, the EH relaying network has better energy efficiency (EE) compared with conventional relaying networks. Results show that when EH relaying is applied, EE is improved through an increased number of relays. Finally, the SE-EE metric is presented for both conventional and EH relays. Results show that the performance of the proposed technique was able to achieve a maximum SE of 1.4 bits/s/Hz and maximum EE at 0.6 bits/s/Hz, and for the case of conventional relays, a maximum SE of 2 bits/s/Hz and EE at 1.1 bits/s/Hz. This result implies that the proposed EH scheme provides an optimum solution for energy-constrained wireless CR systems.

Style APA, Harvard, Vancouver, ISO itp.

14

Wang, Zhenling, Zhangyou Peng, Yongsheng Pei i Haojia Wang. "Performance Analysis of Cooperative NOMA Systems with Incremental Relaying". Wireless Communications and Mobile Computing 2020 (14.03.2020): 1–15. http://dx.doi.org/10.1155/2020/4915638.

Pełny tekst źródła

Streszczenie:

In this paper, we investigate the performance of the non-orthogonal multiple access (NOMA) system with incremental relaying, where the relay is employed with amplify-and-forward (AF) or decode-and-forward (DF) protocols. To characterize the outage behaviors of the incremental cooperative NOMA (ICN) system, new closed-form expressions of both exact and asymptotic outage probability for two users are derived. In addition, the performance of the conventional cooperative NOMA (CCN) system is analyzed as a benchmark for the the purpose of comparison. We confirm that the outage performance of the distant user is enhanced when ICN system is employed. Numerical results are presented to demonstrate that (1) the near user of the ICN system achieves better outage behavior than that of the CCN system in the low signal-to-noise ratio (SNR) region; (2) the outage performance of distant user for the DF-based ICN system is superior to that of the AF-based ICN system when the system works in cooperative NOMA transmission mode; and (3) in the low SNR, the throughput of the ICN system is higher than that of the CCN system.

Style APA, Harvard, Vancouver, ISO itp.

15

Miridakis, Nikolaos I., Dimitrios D. Vergados i Angelos Michalas. "Cooperative relaying in underlay cognitive systems with hardware impairments". AEU - International Journal of Electronics and Communications 69, nr 12 (grudzień 2015): 1885–89. http://dx.doi.org/10.1016/j.aeue.2015.08.015.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

16

Siddig, Ali Ahmed Mohamed, i Mohd Fadzli Mohd Salleh. "Balancing Buffer-Aided Relay Selection for Cooperative Relaying Systems". IEEE Transactions on Vehicular Technology 66, nr 9 (wrzesień 2017): 8276–90. http://dx.doi.org/10.1109/tvt.2017.2685142.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

17

Jin, Sai, i Li Ping. "Parallel Two-Way Relaying in Cooperative OFDMA Cellular Systems". IEEE Transactions on Signal Processing 64, nr 1 (styczeń 2016): 48–59. http://dx.doi.org/10.1109/tsp.2015.2474308.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

18

Van Khuong, Ho, i Tho Le-Ngoc. "Bandwidth-efficient cooperative MIMO relaying schemes". Computers & Electrical Engineering 36, nr 2 (marzec 2010): 352–57. http://dx.doi.org/10.1016/j.compeleceng.2009.03.014.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

19

Prasad Padhy, Saraju, Madhusmita Panda, Srinivas Sethi i Aruna Tripathy. "Performance enhancement of relays used for next generation wireless communication networks". International Journal of Informatics and Communication Technology (IJ-ICT) 10, nr 1 (1.04.2021): 27. http://dx.doi.org/10.11591/ijict.v10i1.pp27-36.

Pełny tekst źródła

Streszczenie:

<p>Relaying is one of the latest communication technologies developed for wireless networks like WiMAX, LTE Advanced and 5G Ultra Reliable Low Latency Communication (URLLC) networks to provide coverage extension as well as higher bitrates for cell edge users. Thus they are included in the design of next generation wireless communication systems to provide performance improvement in terms of coverage and capacity over their predecessors. Other promising features of this technology include easy to implement and reduction in deployment cost. The objective of this paper is to analyze both cooperative and non-cooperative relaying techniques in the Infinite Block length regime and findout the benefits of Relay implementation. A single Amplify and Forward (A&F) Relay is used for this purpose. Reduction in power requirement for Simple Relay is shown in comparison to the direct transmission, using experimental analysis with Matlab simulation. SER (Symbol error rate) is calculated at the receiver for no relay, simple Relay and Cooperative Relaying scenario to show the improvements of cooperative Relaying implementation.The performance enhancement of the Relay is then carried out using Particle Swam Optimization (PSO) optimization technique where allocation of power between Base station and Relay Node is effectively distributed for optimum performance.</p>

Style APA, Harvard, Vancouver, ISO itp.

20

Zamir, Nida, Bakhtiar Ali, Muhammad Fasih Uddin Butt, Muhammad Awais Javed, Byung Moo Lee i Soon Xin Ng. "Cooperative Jamming-Assisted Untrusted Relaying Based on Game Theory for Next-Generation Communication Systems". Applied Sciences 13, nr 13 (4.07.2023): 7863. http://dx.doi.org/10.3390/app13137863.

Pełny tekst źródła

Streszczenie:

In this contribution, we investigate the performance of an untrusted relaying system when Cooperative Jammers (CJs) are available. We propose two scenarios, Untrusted Relaying-aided Multiple Cooperative-Jammers-based Simultaneous Transmission (UR-MCJST) and an Untrusted Relaying-aided Multiple Cooperative Jammers-based Time-Division Transmission (UR-MCJTDT). The performances of both UR-MCJST and UR-MCJTDT schemes are investigated. The source node is the primary user (PU) that has access to a transmission bandwidth. An untrusted relay is employed for improving the reliability of the PU transmission, while CJs are invoked for improving the secrecy rate of the PU transmission. The transmission strategy for the scheme proposed in this paper is split into three unique phases. The first phase is called the broadcast-and-jamming phase, while the second phase is called the relaying phase, and the final phase is called CJ’s secondary phase, which is used for transmitting the secondary user message. More explicitly, CJs transmit noise for impairing the untrusted relay node’s ability to decode the message during the broadcast-and-jamming phase. In compensation for their help, CJs are allocated part of the available spectrum by the PU for their transmission during the secondary transmission phase. A Stackelberg leader–follower game was considered between the PU and the CJs, while a power control game that is based on the well-known Nash equilibrium is employed by the CJs. Furthermore, an investigation into the effect of invoking simultaneous transmission and time-division-based transmission scenarios during the CJs’ secondary transmission phase was carried out. Finally, we evaluated the achievable secrecy rate of the PU and the utility rate of the CJs in our proposed scheme.

Style APA, Harvard, Vancouver, ISO itp.

21

Liau, Qian Yu, i Chee Yen Leow. "Successive User Relaying in Cooperative NOMA System". IEEE Wireless Communications Letters 8, nr 3 (czerwiec 2019): 921–24. http://dx.doi.org/10.1109/lwc.2019.2900013.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

22

Li, Yi, Xiao Mei Fu, Quan Guo i Yi Lu. "A Simplified Power Allocation Method for Cooperative Communication Based on Internet of Things". Applied Mechanics and Materials 195-196 (sierpień 2012): 200–204. http://dx.doi.org/10.4028/www.scientific.net/amm.195-196.200.

Pełny tekst źródła

Streszczenie:

In order to combat multi-path fading across multiple protocol layers in the wireless networks effectively, cooperative diversity is developed with a virtual multi-antenna array, and spatial diversity can be achieved with the relaying. In this paper, we study an improved opportunistic relaying which could be applied to future Internet of Things. Simulation results shows it has better outage probability and spectral efficiency, and based on the model we propose a simplified power allocation method, which has close performance to the exhaustive search method. It has less calculation complexity and lower outage probability, which would be more applicable for future cooperative systems.

Style APA, Harvard, Vancouver, ISO itp.

23

Gunduz, D., i E. Erkip. "Source and Channel Coding for Cooperative Relaying". IEEE Transactions on Information Theory 53, nr 10 (październik 2007): 3454–75. http://dx.doi.org/10.1109/tit.2007.904963.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

24

El-Zahr, Sawsan, i Chadi Abou-Rjeily. "Threshold Based Relay Selection for Buffer-Aided Cooperative Relaying Systems". IEEE Transactions on Wireless Communications 20, nr 9 (wrzesień 2021): 6210–23. http://dx.doi.org/10.1109/twc.2021.3072561.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Hussain, Syed. "Cooperative relaying for idle band integration in spectrum sharing systems". Qatar Foundation Annual Research Forum Proceedings, nr 2013 (listopad 2013): ICTP 023. http://dx.doi.org/10.5339/qfarf.2013.ictp-023.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

26

Liu, Qian, Tiejun Lv i Zhipeng Lin. "Energy-Efficient Transmission Design in Cooperative Relaying Systems Using NOMA". IEEE Communications Letters 22, nr 3 (marzec 2018): 594–97. http://dx.doi.org/10.1109/lcomm.2018.2790379.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

27

Luo, Sheng, i Kah Chan Teh. "Throughput Maximization for Wireless-Powered Buffer-Aided Cooperative Relaying Systems". IEEE Transactions on Communications 64, nr 6 (czerwiec 2016): 2299–310. http://dx.doi.org/10.1109/tcomm.2016.2555900.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

28

Balti, Elyes, i Mohsen Guizani. "Mixed RF/FSO Cooperative Relaying Systems With Co-Channel Interference". IEEE Transactions on Communications 66, nr 9 (wrzesień 2018): 4014–27. http://dx.doi.org/10.1109/tcomm.2018.2818697.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

29

Somekh, Oren, Osvaldo Simeone, H. Vincent Poor i Shlomo Shamai. "Cellular Systems with Non-Regenerative Relaying and Cooperative Base Stations". IEEE Transactions on Wireless Communications 9, nr 8 (sierpień 2010): 2654–63. http://dx.doi.org/10.1109/twc.2010.061710.091603.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

Zheng, Kan, Lijie Hu, Wenbo Wang i Lin Huang. "Performance Analysis of HARQ Transmission in Cooperative DF Relaying Systems". Wireless Personal Communications 55, nr 3 (27.08.2009): 441–55. http://dx.doi.org/10.1007/s11277-009-9808-y.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

31

Kim, Jung-Bin, In-Ho Lee i JunHwan Lee. "Capacity Scaling for D2D Aided Cooperative Relaying Systems Using NOMA". IEEE Wireless Communications Letters 7, nr 1 (luty 2018): 42–45. http://dx.doi.org/10.1109/lwc.2017.2752162.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

32

Ly, Tran, Hoang-Sy Nguyen, Thanh-Sang Nguyen, Van Huynh, Thanh-Long Nguyen i Miroslav Voznak. "Outage Probability Analysis in Relaying Cooperative Systems with NOMA Considering Power Splitting". Symmetry 11, nr 1 (10.01.2019): 72. http://dx.doi.org/10.3390/sym11010072.

Pełny tekst źródła

Streszczenie:

In recent years, non-orthogonal multiple access (NOMA) has become a promising technology for the advancement of future wireless communications. In principle, the relay node with better channel conditions can support others to enhance the system performance by using successive interference cancellation (SIC) technique. In this paper, we take advantage of NOMA in the study of a relaying cooperative system operating in half-duplex (HD) fixed decode-and-forward (DF) relaying scheme. In the two time slots, two data symbols are received at the destination node resulting in a higher transmission rate. Besides that, we study energy harvesting (EH) with power splitting (PS) protocol. For performance analysis, approximate and exact closed-form expressions for outage probability (OP) are obtained. Following that, we examine the average bit error probability (ABEP) while expressions for the throughput in delay-limited mode are given. It can be seen that our simulation results match well with the Monte Carlo simulations.

Style APA, Harvard, Vancouver, ISO itp.

33

Khatalin, Sari, i Hadeel Miqdadi. "On the Performance of Cooperative Relaying Systems with NOMA in κ − μ Fading Environment". Wireless Communications and Mobile Computing 2022 (23.04.2022): 1–15. http://dx.doi.org/10.1155/2022/1319687.

Pełny tekst źródła

Streszczenie:

Nonorthogonal multiple access (NOMA) is considered to be a promising solution for the fifth generation (5G) wireless networks. The performance of the 5G wireless networks in terms of outage probability, achievable rate, and other important network performance metrics can be remarkably improved by the integration of NOMA with cooperative relaying transmission technique. In this paper, we investigate the performance of the cooperative relaying system integrated with NOMA in terms of outage probability and achievable rate over κ − μ fading channels. Analytical expressions for the outage probability and the achievable rate are obtained for the system mentioned above. Moreover, corresponding expressions for Rician and Rayleigh fading channels are also presented in this paper as special cases of κ − μ fading channels. Some numerical examples are presented here for illustration purposes. The analytical results obtained in this paper are all validated via simulation.

Style APA, Harvard, Vancouver, ISO itp.

34

Savazzi, Stefano, i Umberto Spagnolini. "Cooperative Fading Regions for Decode and Forward Relaying". IEEE Transactions on Information Theory 54, nr 11 (listopad 2008): 4908–24. http://dx.doi.org/10.1109/tit.2008.929911.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Le-Tran, Manh, i Sunghwan Kim. "Performance Analysis of Dual-Hop FSO Cooperative Systems over F Turbulence with Pointing Errors". Photonics 9, nr 7 (21.06.2022): 437. http://dx.doi.org/10.3390/photonics9070437.

Pełny tekst źródła

Streszczenie:

Recently, atmospheric-turbulence-induced fading in free-space optical (FSO) communication with pointing error impairment was modeled and studied using the Fisher–Snedecor F distribution with a good fit to experimental data. In this letter, we investigate the end-to-end performance of dual-hop FSO fixed-gain relaying systems operating over F turbulence channels. More specifically, we present closed-form expressions for the cumulative distribution function and the probability density function of the end-to-end signal-to-noise (SNR) ratio of the proposed system. Consequently, the outage probability, ergodic capacity, and average bit error rate performance are derived with tight asymptotic results in high-SNR regimes to gain more insight into the impacts of system parameters and channel turbulence conditions. Finally, Monte Carlo simulations are provided to validate the analytical results, revealing a significant performance gain compared to a single FSO link in the medium- to high-SNR range by using dual-hop FSO relaying.

Style APA, Harvard, Vancouver, ISO itp.

36

Kara, Ferdi. "Error performance of cooperative relaying systems empowered by SWIPT and NOMA". Physical Communication 49 (grudzień 2021): 101450. http://dx.doi.org/10.1016/j.phycom.2021.101450.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

37

Liu, Hongwu, Zhiguo Ding, Kyeong Jin Kim, Kyung Sup Kwak i H. Vincent Poor. "Decode-and-Forward Relaying for Cooperative NOMA Systems With Direct Links". IEEE Transactions on Wireless Communications 17, nr 12 (grudzień 2018): 8077–93. http://dx.doi.org/10.1109/twc.2018.2873999.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

38

Abou-Rjeily, Chadi. "Performance Analysis of Selective Relaying in Cooperative Free-Space Optical Systems". Journal of Lightwave Technology 31, nr 18 (wrzesień 2013): 2965–73. http://dx.doi.org/10.1109/jlt.2013.2277191.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

39

Kim, Jung-Bin, i In-Ho Lee. "Capacity Analysis of Cooperative Relaying Systems Using Non-Orthogonal Multiple Access". IEEE Communications Letters 19, nr 11 (listopad 2015): 1949–52. http://dx.doi.org/10.1109/lcomm.2015.2472414.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

40

Luo, Sheng, i Kah Chan Teh. "Buffer State Based Relay Selection for Buffer-Aided Cooperative Relaying Systems". IEEE Transactions on Wireless Communications 14, nr 10 (październik 2015): 5430–39. http://dx.doi.org/10.1109/twc.2015.2438296.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

41

Mostafa, Hala, Mohamed Marey, Octavia A. Dobre i Mohamed H. Ahmed. "Simplified maximum-likelihood detectors for full-rate alternate-relaying cooperative systems". IET Communications 7, nr 17 (26.11.2013): 1899–906. http://dx.doi.org/10.1049/iet-com.2013.0206.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

42

Asghari, Vahid, i Sonia Aissa. "Performance of Cooperative Spectrum-Sharing Systems with Amplify-and-Forward Relaying". IEEE Transactions on Wireless Communications 11, nr 4 (kwiecień 2012): 1295–300. http://dx.doi.org/10.1109/twc.2012.020812.111201.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

43

Dhanasekaran, Senthilkumar, i S. Anusha. "Cooperative Diversity in Secondary Systems: Efficient Relaying Protocol for Cognitive Radio". Wireless Personal Communications 109, nr 2 (16.05.2019): 1419–28. http://dx.doi.org/10.1007/s11277-019-06619-0.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

44

Jun, Tang, i Wang Liejun. "Non-combining Incremental Relaying Protocol for Amplify-and-forward Cooperative Systems". Information Technology Journal 12, nr 1 (15.12.2012): 239–42. http://dx.doi.org/10.3923/itj.2013.239.242.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

45

Xia, Minghua, i Sonia Aissa. "Modeling and Analysis of Cooperative Relaying in Spectrum-Sharing Cellular Systems". IEEE Transactions on Vehicular Technology 65, nr 11 (listopad 2016): 9112–22. http://dx.doi.org/10.1109/tvt.2016.2517042.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

46

Nguyen, Tien-Tung, Jong-Ho Lee, Minh-Tuan Nguyen i Yong-Hwa Kim. "Machine Learning-Based Relay Selection for Secure Transmission in Multi-Hop DF Relay Networks". Electronics 8, nr 9 (28.08.2019): 949. http://dx.doi.org/10.3390/electronics8090949.

Pełny tekst źródła

Streszczenie:

A relay selection method is proposed for physical-layer security in multi-hop decode-and-forward (DF) relaying systems. In the proposed method, cooperative relays are selected to maximize the achievable secrecy rates under DF-relaying constraints by the classification method. Artificial neural networks (ANNs), which are used for machine learning, are applied to classify the set of cooperative relays based on the channel state information of all nodes. Simulation results show that the proposed method can achieve near-optimal performance for an exhaustive search method for all combinations of relay selection, while computation time are reduced significantly. Furthermore, the proposed method outperforms the best relay selection method, in which the best relay in terms of secrecy performance is selected among active ones.

Style APA, Harvard, Vancouver, ISO itp.

47

Xu, Lingwei, Jingjing Wang, Yun Liu, Wei Shi i T. Aaron Gulliver. "Outage Performance for IDF Relaying Mobile Cooperative Networks". Mobile Networks and Applications 23, nr 6 (20.12.2017): 1496–501. http://dx.doi.org/10.1007/s11036-017-0982-y.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

48

Van, Hoang-Phuong, i Hoang-Sy Nguyen. "Throughput performance for full-duplex DF relaying protocol in hybrid wireless power transfer systems". Indonesian Journal of Electrical Engineering and Computer Science 24, nr 3 (1.12.2021): 1571. http://dx.doi.org/10.11591/ijeecs.v24.i3.pp1571-1577.

Pełny tekst źródła

Streszczenie:

Most of the existing studies on energy harvesting (EH) cooperative relaying networks are conducted for the outdoor environments which are mainly characterized by Rayleigh fading channels. However, there are not as many studies that consider the indoor environments whereas the state-of-the-art internet of things (IoT) and smart city applications are built upon. Thus, in this paper, we analyze a namely hybrid time-power splitting relaying (HTPSR) protocol in a full-duplex (FD) decode-and-forward (DF) battery-energized relaying network in indoor scenarios modelled by the unpopular log-normal fading channels. Firstly, we formulate the analytical expression of the outage probability (OP) then the system throughput. Accordingly, we simulate the derived expressions with the Monte Carlo method. It is worth mentioning that in our work, the simulation and the theory agree well with each other. From the simulation results, we know how to compromise either the power splitting (PS) or the time splitting (TS) factors for optimizing the system performance.

Style APA, Harvard, Vancouver, ISO itp.

49

Ghous, Mujtaba, Ahmad Kamal Hassan, Ziaul Haq Abbas, Ghulam Abbas, Aseel Hussien i Thar Baker. "Cooperative Power-Domain NOMA Systems: An Overview". Sensors 22, nr 24 (9.12.2022): 9652. http://dx.doi.org/10.3390/s22249652.

Pełny tekst źródła

Streszczenie:

Interference has been a key roadblock against the effectively deployment of applications for end-users in wireless networks including fifth-generation (5G) and beyond fifth-generation (B5G) networks. Protocols and standards for various communication types have been established and utilised by the community in the last few years. However, interference remains a key challenge, preventing end-users from receiving the quality of service (QoS) expected for many 5G applications. The increased need for better data rates and more exposure to multimedia information lead to a non-orthogonal multiple access (NOMA) scheme that aims to enhance spectral efficiency and link additional applications employing successive interference cancellation and superposition coding mechanisms. Recent work suggests that the NOMA scheme performs better when combined with suitable wireless technologies specifically by incorporating antenna diversity including massive multiple-input multiple-output architecture, data rate fairness, energy efficiency, cooperative relaying, beamforming and equalization, network coding, and space–time coding. In this paper, we discuss several cooperative NOMA systems operating under the decode-and-forward and amplify-and-forward protocols. The paper provides an overview of power-domain NOMA-based cooperative communication, and also provides an outlook of future research directions of this area.

Style APA, Harvard, Vancouver, ISO itp.

50

Al-nahari, Azzam Y., Moawad I. Dessouky i Fathi E. Abd El-Samie. "Cooperative Space–Time Coding with Amplify-and- Forward Relaying". Journal of Signal Processing Systems 67, nr 2 (2.09.2010): 129–38. http://dx.doi.org/10.1007/s11265-010-0516-3.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!