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Round-robin relaying with diversity in amplify-and-forward multisource cooperative communications

Round-robin relaying with diversity in amplify-and-forward multisource cooperative communications
Round-robin relaying with diversity in amplify-and-forward multisource cooperative communications
In this paper, a round-robin based relay protocol dubbed round-robin relaying with source selection protocol (R3SSP) is proposed to achieve full cooperative diversity in multi-source cooperative communication networks. In R3SSP, all the sources transmit their individual information in turn. The relays then forward the messages of some specific sources in a fixed order according to the limited feedback information. Compared with traditional relay selection based protocols, R3SSP is based on round-robin relaying, thus avoids relay selection and requires no specific channel state information (CSI) feedback. R3SSP can therefore be implemented with lower complexity. Furthermore, the exact and asymptotic expressions of the outage probability are derived. The diversity-multiplexing tradeoff (DMT) performance is also analyzed. Theoretical analysis shows that R3SSP achieves full cooperative diversity, and provides better DMT performance than relay selection based protocols in a system where the number of sources is higher than that of the relays. Based on the DMT analysis, we further propose an adaptive relay activation (ARA) scheme which is capable of achieving higher DMT by dynamically selecting the number of relays to be activated in the entire network. Simulation results also verify the validity and superiority of R3SSP.
cooperative communication, round-robin relaying, diversity-multiplexing tradeoff, dmt, adaptive relay activation
0018-9545
1251-1266
Zhang, Zhang
9b809e47-8313-4d54-8b2b-70eb18085e23
Lv, Tiejun
fb465673-1068-4cae-bb94-93ab1dd63f4d
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Zhang, Zhang
9b809e47-8313-4d54-8b2b-70eb18085e23
Lv, Tiejun
fb465673-1068-4cae-bb94-93ab1dd63f4d
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60

Zhang, Zhang, Lv, Tiejun and Yang, Shaoshi (2013) Round-robin relaying with diversity in amplify-and-forward multisource cooperative communications. IEEE Transactions on Vehicular Technology, 62 (3), 1251-1266. (doi:10.1109/TVT.2012.2230038).

Record type: Article

Abstract

In this paper, a round-robin based relay protocol dubbed round-robin relaying with source selection protocol (R3SSP) is proposed to achieve full cooperative diversity in multi-source cooperative communication networks. In R3SSP, all the sources transmit their individual information in turn. The relays then forward the messages of some specific sources in a fixed order according to the limited feedback information. Compared with traditional relay selection based protocols, R3SSP is based on round-robin relaying, thus avoids relay selection and requires no specific channel state information (CSI) feedback. R3SSP can therefore be implemented with lower complexity. Furthermore, the exact and asymptotic expressions of the outage probability are derived. The diversity-multiplexing tradeoff (DMT) performance is also analyzed. Theoretical analysis shows that R3SSP achieves full cooperative diversity, and provides better DMT performance than relay selection based protocols in a system where the number of sources is higher than that of the relays. Based on the DMT analysis, we further propose an adaptive relay activation (ARA) scheme which is capable of achieving higher DMT by dynamically selecting the number of relays to be activated in the entire network. Simulation results also verify the validity and superiority of R3SSP.

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More information

Published date: March 2013
Keywords: cooperative communication, round-robin relaying, diversity-multiplexing tradeoff, dmt, adaptive relay activation
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 273146
URI: http://eprints.soton.ac.uk/id/eprint/273146
ISSN: 0018-9545
PURE UUID: 24570a75-cbb5-45d3-aab9-6c3e36de5928

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Date deposited: 28 Jan 2012 20:37
Last modified: 14 Mar 2024 10:19

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Contributors

Author: Zhang Zhang
Author: Tiejun Lv
Author: Shaoshi Yang

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