Relay Selection for Decode-and-Forward Cooperative Network with Multiple Antennas

Jin, Xianglan; No, Jong-Seon; Shin, Dong-Joon

doi:10.1109/twc.2011.092911.100030

Cited by 32 publications

(33 citation statements)

References 18 publications

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“…In other words, we define out P SymRSM out and out P SubRSM out in such a way that I SymRSM out = out P SymRSM out (22) I SubRSM out = out P SubRSM out (23) where P SymRSM out and P SubRSM out are denoted by (20) and (21), respectively.…”

Section: Outage Capacitymentioning

confidence: 99%

Characterisation of relay selection in cooperative multiple‐input multiple‐output‐orthogonal frequency division multiplexing systems

Banar

Mohammadi

2014

IET Communications

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In this study, two relay selection methods in the half-duplex decode-and-forward relaying for cooperative multipleinput multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) systems have been introduced. The relay selections are implemented using the symbol-based and subcarrier-based methods. By considering different number of antennas for source, each relay, and destination, the authors have derived closed-form outage expressions for these proposed methods. The MIMO channel model for each subcarrier, between source-relay and relay-destination is considered as a MIMO Rician fading channel with independent but not necessary identically distributed. Moreover, the outage expressions for MIMO independent and identically distributed Rician and Rayleigh fading channels are derived as special cases. Furthermore, the correlation among the OFDM subchannels is analysed. In addition, the implementation issues of both relay selection methods are also investigated. Monte Carlo simulations are performed to validate the outage analysis where the excellent agreement between the analytical and simulation results is observed.

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Section: Outage Capacitymentioning

confidence: 99%

Characterisation of relay selection in cooperative multiple‐input multiple‐output‐orthogonal frequency division multiplexing systems

Banar

Mohammadi

2014

IET Communications

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“…According to the channel gain fluctuation, relay selection was also combined with resource allocation in multiple-relay scenarios [16]- [18]. Besides, energy efficiency for the low energy case was studied in [19] while relay selection was investigated in [20] for multi-antenna relay channels. In fact, the topologies considered in [14]- [20] were different from half-duplex relay channel.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, energy efficiency for the low energy case was studied in [19] while relay selection was investigated in [20] for multi-antenna relay channels. In fact, the topologies considered in [14]- [20] were different from half-duplex relay channel. Therefore, the results obtained in these works can not be applied to half-duplex relay channel directly.…”

Section: Introductionmentioning

confidence: 99%

Joint Power Allocation and Strategy Selection for Half-Duplex Relay System

Chen

Fan

2017

IEEE Trans. Veh. Technol.

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Decode-and-Forward (DF) and Compress-andForward (CF) are two efficient cooperation strategies for relay networks. Combination of DF and CF strategies is promising to improve the achievable rate of cooperative communication systems. To thoroughly aggregate the advantage of DF and CF strategies, we put forward a joint Power Allocation and Strategy Selection (PASS) scheme for half-duplex relay channel. The PASS scheme is shown to achieve a higher rate compared with regular hybrid DF/CF scheme. The rate gain obtained in the static relay channel results from actively adjusting and optimizing the relay power followed by selecting the better strategy between DF and CF. Particularly, when the relay receives and transmits in sequential time slots, we characterize the positive rate improvement area of PASS scheme analytically and give a near optimal setting for approaching the best rate performance. The PASS scheme is extended to fading relay channels. We show that the rate increment obtained from the PASS scheme is further magnified by employing an advanced relay power allocation technique over channel states. The corresponding optimal power allocation is established based on the concavity of the rate achieved by the PASS scheme in static relay channel. Numerical results are presented to validate the analysis.

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“…In order to generalize the concept of relay selec- tion, diversity analysis of single and multiple relay selection schemes was investigated [8] and based on the simulation results, the performance of multiple relay selection methods was superior than the corresponding single relay selection methods. Multiple antennas based DF relaying is considered [9], to investigate the diversity gain by employing multiple antennas. Performance analysis of single and multiple relay selection indicated marginal gain by selecting more than three relays for the cooperative communication model [10].…”

Section: Introductionmentioning

confidence: 99%

Decode-to-cooperate: a sequential alamouti-coded cooperation strategy in dual-hop wireless relay networks

et al. 2016

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An optimal cooperation strategy, decode-tocooperate, is proposed and investigated for performance improvements in dual-hop wireless relay networks. Based on decode-and-forward (DF) strategy with multiple relay selection, we design a novel scheme such that the source node keeps transmitting sequentially and the selected relays cooperate by transmitting the decoded signal using distributed Alamouti coding. We exploit the multipath propagation effect of the wireless channel to achieve lower probability of error and introduce optimum power allocation and relay positioning. We analyze the scenario when the source to destination direct link is not available and derive a closed form expression for symbol error rate (SER), its upper bound and an asymptotically tight approximation to exploit the performance gain by selecting the optimum relays in a multiple-relay cooperation scheme. Moreover, asymptotic optimum power allocation (based on the SER approximation) and optimal relay positioning are also considered to further improve the SER. The proposed relay selection scheme outperforms cooperative (DF) and non-cooperative schemes by more than 2 dB.

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Relay Selection for Decode-and-Forward Cooperative Network with Multiple Antennas

Cited by 32 publications

References 18 publications

Characterisation of relay selection in cooperative multiple‐input multiple‐output‐orthogonal frequency division multiplexing systems

Characterisation of relay selection in cooperative multiple‐input multiple‐output‐orthogonal frequency division multiplexing systems

Joint Power Allocation and Strategy Selection for Half-Duplex Relay System

Decode-to-cooperate: a sequential alamouti-coded cooperation strategy in dual-hop wireless relay networks

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