Round-Robin Relaying With Diversity in Amplify-and-Forward Multisource Cooperative Communications

Zhang, Zhang; Lv, Tiejun; Yang, Shaoshi

doi:10.1109/tvt.2012.2230038

Cited by 6 publications

(7 citation statements)

References 31 publications

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“…In [20], a relay based MIMO transmission with interference mitigation scheme was proposed for D2D communications. Multi-relay diversity was proposed by Lv et al [21] and round-robin based relay sharing was investigated in [22].…”

Section: A Non-incentive-based Schemesmentioning

confidence: 99%

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BRAINS: Joint Bandwidth-Relay Allocation in Multihoming Cooperative D2D Networks

Chen

Dai

et al. 2018

IEEE Trans. Veh. Technol.

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As an emerging technique, cooperative device to device (CD2D) communication has been considered to be a solution to capacity shortage problem. Combining multi-homing and CD2D techniques together can potentially improve network performance. We propose a novel multi-homing CD2D (MH-CD2D) network, in which multiple homing mobile devices (MMDs) act as relays for the cooperative communications of ordinary mobile devices (OMDs). We formulate such joint bandwidth-relay allocation problem as a two-stage game, in order to deal with two challenges: 1) how to design incentive mechanisms motivating MMDs to lease spare bandwidths to OMDs; 2) how to help OMDs to choose appropriate MMD relays. In the first stage, we use a non-cooperative game to model the competition between MMDs in terms of shared bandwidth and price. In the second stage, we model the behavior of OMDs selecting MMDs by an evolutionary game.We prove that there exists Nash equilibrium in the game and propose a distributed incentive scheme named IMES to solve the joint bandwidth-relay allocation problem. Extensive simulation results show that the equilibrium can be achieved and the best response price of one MMD increases with the other's best price in the Stackelberg game. The utility of MMDs increases with the number of OMDs in each OMD group at the evolutionary equilibrium. The proposed algorithms are able to reduce average service delay by more than 25% in comparison to the randomized scheme which is frequently used in the most existing works. On average, IMES outperforms existing scheme by about 20.37% in terms of utility of MMDs.

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Section: A Non-incentive-based Schemesmentioning

confidence: 99%

“…6(b) as an example again. When there are only 90% OMDs conducting cooperative communication (CC) with MMD r 1 in group a, the utility difference between r 1 and r 2 is larger than that of all nodes using cooperative communications, that can be explained by the changing values of k ω τ ij in (22).…”

Section: B Best Strategymentioning

confidence: 99%

BRAINS: Joint Bandwidth-Relay Allocation in Multihoming Cooperative D2D Networks

Chen

Dai

et al. 2018

IEEE Trans. Veh. Technol.

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“…In this TRA, the relays are dedicated to assist one data block in each relay time slot and brings no benefits for the other data blocks. Differently, we exploit the TRA as in [14]- [17] where all the relays are shared by all the sources. To achieve this effect, the relays do not participate in assisting the signal transmission until all the direct transmissions have been finished.…”

Section: B the Proposed Us-lcrpmentioning

confidence: 99%

A Low Complexity Approach of Combining Cooperative Diversity and Multiuser Diversity in Multiuser Cooperative Networks

Zhang

Yang

2013

IEEE Trans. Signal Process.

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In this paper, we investigate the scheduling scheme to combine cooperative diversity (CD) and multiuser diversity (MUD) in multiuser cooperative networks under the time resource allocation (TRA) framework in which the whole transmission is divided into two phases: the broadcast phase and the relay phase. The broadcast phase is for direct transmission whereas the relay phase is for relay transmission. Based on this TRA framework, a user selection based low complexity relay protocol (US-LCRP) is proposed to combine CD and MUD. In each time slot (TS) of the broadcast phase, a "best" user is selected for transmission in order to obtain MUD. In the relay phase, the relays forward the messages of some specific users in a fixed order and then invoke the limited feedback information to achieve CD. We demonstrate that the diversity-multiplexing tradeoff (DMT) of the US-LCRP is superior to that of the existing schemes, where more TSs are allocated for direct transmission in order to jointly exploit CD and MUD. Our analytical and numerical results show that the US-LCRP constitutes a more efficient resource utilization approach than the existing schemes.

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“…Hence, reduction of the overhead caused by the required CSI exchanges is crucial. Many approaches to reduce both the overhead in the CSI exchanges and the effect of the outdated CSI have been considered and analyzed by comparing the trade-offs between the performance and the CSI overhead (or the quality of CSI) [5]- [8].…”

Section: Introductionmentioning

confidence: 99%

SER Analysis of Adaptive Threshold-Based Relay Selection With Limited Feedback for Type II Relay

et al. 2019

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In this paper, via the exact closed-form expressions, we statistically investigate the symbolerror-rate performance of the limited feedback-based adaptive threshold-based relay selection (ATRS) scheme under multiple type II relay environments. Our analytical results are thoroughly validated by crosschecking them against the results obtained via the Monte Carlo simulations. Some selected results show that the performance degradation caused by minimizing the feedback can be compensated by refining the feedback information, specifically by applying a 1-bit increase in terms of the feedback data rate and an additional single-comparison process in terms of complexity. Note that our derived results are valid for both symmetric and asymmetric link conditions. Additionally, the analytical results can be easily evaluated numerically with the standard mathematical packages. Furthermore, the analytical framework and the derived results can be applied for the expansion of the n-bit feedback-based ATRS scheme. Finally, for practical consideration, we provide useful discussion on the plausibility that the extended scheme can be implemented with only a 1-bit feedback. INDEX TERMS SER, closed-form expressions, limited feedback, relay selection, type II relay.

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Round-Robin Relaying With Diversity in Amplify-and-Forward Multisource Cooperative Communications

Cited by 6 publications

References 31 publications

BRAINS: Joint Bandwidth-Relay Allocation in Multihoming Cooperative D2D Networks

BRAINS: Joint Bandwidth-Relay Allocation in Multihoming Cooperative D2D Networks

A Low Complexity Approach of Combining Cooperative Diversity and Multiuser Diversity in Multiuser Cooperative Networks

SER Analysis of Adaptive Threshold-Based Relay Selection With Limited Feedback for Type II Relay

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