Single Relay Selection Schemes for Broadcast Networks

Hakim, Hela; Boujemâa, Hatem; Ajib, Wessam

doi:10.1109/twc.2013.050313.120186

Cited by 16 publications

(13 citation statements)

References 34 publications

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“…In addition, the performance of the traditional relaying scheme is also presented as a benchmark to show the benefits of our proposed mechanism. Furthermore, in order to facilitate fair competition, optimal power allocation (OPA) and two relay selection strategies described in this manuscript are intentionally imported into traditional AF-OFDM systems, where η n can also be designed accordingly as (14). Figure 1 illustrates the comparative results of achievable rate in bps/Hz as a function of SNR for aforementioned resource allocation schemes when a = b = c = 10 and system instantaneous CSI can be fully accessed.…”

Section: Algorithm 2 Irs Designmentioning

confidence: 99%

“…Specifically, the authors in [13] proposed a classical max-min relay selection mechanism for AF networks with interference earlier, in which a bottleneck was defined as the smaller signal-to-noise ratio (SNR) of the dual-hop links and the relay with a maximum bottleneck was selected to help. Afterwards, this scheme received extensive investigation [14]- [16]. Four single relay selection mechanisms including the max-min scheme were put forward based on the instantaneous or average SNR received for broadcast networks in [14], where the destinations are classified into two sets and the "reliable" nodes conduct as potential relays for the "unreliable" nodes.…”

Section: Introductionmentioning

confidence: 99%

“…Afterwards, this scheme received extensive investigation [14]- [16]. Four single relay selection mechanisms including the max-min scheme were put forward based on the instantaneous or average SNR received for broadcast networks in [14], where the destinations are classified into two sets and the "reliable" nodes conduct as potential relays for the "unreliable" nodes. Distributed relay selection protocols were investigated in [15]- [16] for two-way relaying networks, where the relay nodes compete with each other for participating into transmission in a scattered manner.…”

Section: Introductionmentioning

confidence: 99%

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Maximizing achievable rate for improved AF-OFDM cooperative transmission

Zhang

Pang

Xiao

et al. 2015

2015 IEEE Wireless Communications and Networking Conference (WCNC)

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This manuscript develops an improved AF-OFDM (Amplify-and-Forward, Orthogonal Frequency Division Multiplexing) scheme where selective relaying policy is fully utilized to promote the spectrum efficiency of cooperative transmission, and presents an achievable rate maximizing resource allocation strategy subject to a sum-power constraint. The high computational complexity for optimization necessitates our investigation of suboptimal approaches. The proposed centralized algorithms can be implemented in a step-by-step manner. Specifically, the binary selective relaying policies are first decided for each subcarrier according to instantaneous or statistical channel state information. Then, relay selection might be conducted by those subcarriers who would like to choose a relay to assist their data transmission from network achievable rate maximization perspective, and finally power loading can be mathematically solved by employing standard Lagrange techniques. Numerical results are shown to illustrate the benefits of the improved AF-OFDM cooperative protocol with optimized resource allocation.Index Terms-Amplify-and-forward, orthogonal frequency division multiplexing, cooperative communication, achievable rate, resource allocation.

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Section: Algorithm 2 Irs Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Maximizing achievable rate for improved AF-OFDM cooperative transmission

Zhang

Pang

Xiao

et al. 2015

2015 IEEE Wireless Communications and Networking Conference (WCNC)

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“…Many researches have proved the superiority of cooperative communication. Two classic methods of cooperative communication are AF and decode‐and‐forward . Both methods can improve the diversity gain by increasing the relay nodes and then improve the transmission effectiveness of networks .…”

Section: Introductionmentioning

confidence: 99%

The computation and analysis of energy‐efficient multirelay and multihop communication scheme in wireless sensor networks

Xie

Shen

et al. 2017

Int J Communication

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Wireless sensor network (WSN) has been one of the most important network technologies nowadays. However, the communication of wireless sensor nodes is often constrained by computation capability and energy efficiency, and direct transmission is hard to adapt to all communication environments. Cooperative transmission can achieve the low energy consumption requirements effectively. But most researches considered multirelay and singular-hop scheme, and their energy efficiencies were not satisfactory in a longer transmission distance. To address this problem, we investigate the effect of the relay links and the relay node hops on the energy consumption in this paper. By deriving the outage probability of the multirelay and multihop transmission scheme, the minimum transmitting power of the source node is obtained. Then the existence of the minimum energy consumption is proved with respect to the number of relay links. Simultaneously, to reduce the computational complexity to ensure the effective implementation of the communication, the optimal number of relay links is calculated based on the minimum energy consumption. The simulation results show that the proposed multirelay and multihop transmission scheme has better transmission efficiency and can achieve satisfactory performance of communication and computation cooperation. KEYWORDScooperative transmission, energy consumption, multirelay and multihop, the optimal number of relay links, wireless sensor networks (WSNs)

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“…In practice, this setting could correspond to a base station (source node) sending a message to a group of multicast users (multiple destination nodes) through relays. Our motivation to consider multicast system with SSK arises from the works in [20]- [22], where outage performance and bit error performance for non-SSK type modulation (e.g., BPSK) have been studied under multicast system models. Our new contributions in this paper can be summarized as follows:…”

Section: Introductionmentioning

confidence: 99%

Decode-and-forward cooperative multicast with space shift keying

Som

Chockalingam

2014

2014 IEEE Wireless Communications and Networking Conference (WCNC)

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Abstract-In this paper, we consider space-shift keying (SSK) in dual-hop decode-and-forward (DF) cooperative multicast networks, where a source node communicates with multiple destination nodes with the help of relay nodes. We consider a topology consisting of a single source, two relays, and multiple destinations. For such a system, we propose a scheme to select a single relay among the two when SSK is used for transmission on each of the links in the cooperative system. We analyze the end-to-end average bit error probability (ABEP) of this system. For binary SSK, we derive an exact expression for the ABEP in closed-form. Analytical results exactly match the simulation results validating the analysis. For non-binary SSK, we derive an approximate ABEP expression, where the analytical ABEP results closely follow simulation results. We also derive the diversity order of the system through asymptotic ABEP analysis.

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Single Relay Selection Schemes for Broadcast Networks

Cited by 16 publications

References 34 publications

Maximizing achievable rate for improved AF-OFDM cooperative transmission

Maximizing achievable rate for improved AF-OFDM cooperative transmission

The computation and analysis of energy‐efficient multirelay and multihop communication scheme in wireless sensor networks

Decode-and-forward cooperative multicast with space shift keying

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