Symbol error probabilities for general cooperative links

Ribeiro, Alejandro; Cai, Xiaodong; Giannakis, Georgios B.

doi:10.1109/icc.2004.1313169

Cited by 103 publications

(137 citation statements)

References 14 publications

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“…Their results were given in terms of Meijer's G-functions, which are easily implemented in popular computing softwares. In [9], an asymptotic expression for the average symbol error rate (SER) of AF relaying systems was derived. This result was also extended to general cooperative setups that include multiple cooperating paths and multiple cooperating hops.…”

Section: Introductionmentioning

confidence: 99%

Performance of Cooperative Diversity Networks: Analysis of Amplify-and-Forward Relaying under Equal-Gain and Maximal-Ratio Combining

Costa

Aı̈ssa

2009

2009 IEEE International Conference on Communications

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By enhancing diversity, cooperation in wireless networks allows increasing the transmission reliability and extending the radio coverage, without the need of implementing multiple antennas at the terminals. In this context, this paper proposes a general approach for analyzing the performance of dual-hop cooperative diversity networks with nonregenerative variablegain relays. Such a strategy allows for the use of both equalgain combining (EGC) and maximal-ratio combining (MRC) techniques at the destination. In our analysis, closed-form approximations for the outage probability (OP) and average symbol error rate (SER) of linear modulations are presented. These expressions yield results instantaneously, regardless the number of relays used, in contrast with exact solutions which are rather intricate and difficult to evaluate, especially when the number of relays increases. The inherent simplicity of our methodology makes it attractive to serve as a benchmark in the design and performance evaluation of cooperative networks with variablegain relays and employing either EGC or MRC. Numerical results are provided and compared with Monte Carlo simulations to illustrate the accuracy of the proposed expressions.

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Section: Introductionmentioning

confidence: 99%

Performance of Cooperative Diversity Networks: Analysis of Amplify-and-Forward Relaying under Equal-Gain and Maximal-Ratio Combining

Costa

Aı̈ssa

2009

2009 IEEE International Conference on Communications

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“…Therefore, it is more meaningful to investigate the SER at high SNR region. As such, we employ the technique developed in [38] and used in [37], [39], and [40]. From [38], if the PDF f γe2e (γ) can be approximated by…”

Section: B Ser Analysismentioning

confidence: 99%

“…Since we assumed that α is not an integer, we can not directly use the method in [37], [39], and [40] to determine the value of b, where they assumed that b is an integer. Therefore, we need to find the approximate PDF expression and use it to determine the diversity order b + 1.…”

Section: B Ser Analysismentioning

confidence: 99%

Performance of Mixed RF/FSO With Variable Gain over Generalized Atmospheric Turbulence Channels

Yang

Hasna

Gao

2015

IEEE J. Select. Areas Commun.

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In this paper, we consider a free-space optical (FSO) communication scheme with the help of a variable gain relay where the links from the source to the relay are radio-frequency (RF) links while the links between the relay and the destination are FSO links with M-distribution. To mitigate the effects of multipath fading and atmospheric turbulence, we apply transmit diversity at the source and selection combining (SC) at the destination, while the relay is only equipped with single RF receive antenna for receiving signal and one aperture for relaying the information. With this setup, we first derive expressions for the outage probability, bit-error rate, and the average capacity. We further investigate the effect of pointing errors on the system performance.Index Terms-Atmospheric turbulence, free-space optical communication, M-distribution, pointing error, relay. 14]. Most of the work on multiple-input multiple-output (MIMO) FSO systems focused on performance analysis [7-10], iterative maximum-likelihood sequence detection method [11], diversity-multiplexing trade-off in coherent FSO systems

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“…For single-relay selection, some primary principles have been proposed, such as best relay [14]- [16], best worse channel [17], [18], and best harmonic mean [19]. The best relay principle selects the relay with maximum SNR.…”

Section: Related Workmentioning

confidence: 99%

Relay Selection for Three-Stage Relaying Scheme in Clustered Wireless Networks

Liu

Hua²,

Chen

et al. 2015

IEEE Trans. Veh. Technol.

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For clustered wireless networks, the conventional dual-hop cooperation technique is inefficient since relays with imbalanced channels to the source and the destination may become the bottleneck of the overall transmission. In this paper, a novel cooperative framework called the three-stage relaying (TSR) scheme is proposed to address this problem. In TSR, relays are divided into two clusters/groups, and a virtual multiple-input-multiple-output (MIMO) antenna array is formed by introducing the transmission between the two relay groups. This "relay-to-relay" communication enables transmissions over shorter distances, which naturally breaks the bottleneck emerging in the dual-hop cooperation scheme. An optimization problem is formulated to deal with the relay selection for these two groups, aiming at maximizing the received signal-to-noise ratio (SNR) at the destination, subject to the number-of-relay constraint. This problem turns out to be nontrivial due to the coupling of the relays between two groups. We tackle this challenging problem by decomposing it into two subproblems: One deals with the selection of transmitting relays, and the other deals with the selection of receiving relays. We then propose two heuristic algorithms that achieve the tradeoff between the optimality of the solution and the computational complexity. Through extensive numerical simulations, we show the superiority of TSR over the dual-hop cooperation schemes in both the clustered and centered wireless networks in terms of symbol error rate and throughput.Index Terms-Clustered networks, cooperative multiple-input multiple-output (MIMO), optimization, spatial diversity. 0018-9545

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Symbol error probabilities for general cooperative links

Cited by 103 publications

References 14 publications

Performance of Cooperative Diversity Networks: Analysis of Amplify-and-Forward Relaying under Equal-Gain and Maximal-Ratio Combining

Performance of Cooperative Diversity Networks: Analysis of Amplify-and-Forward Relaying under Equal-Gain and Maximal-Ratio Combining

Performance of Mixed RF/FSO With Variable Gain over Generalized Atmospheric Turbulence Channels

Relay Selection for Three-Stage Relaying Scheme in Clustered Wireless Networks

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