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A low complexity approach of combining cooperative diversity and multiuser diversity in multiuser cooperative networks

A low complexity approach of combining cooperative diversity and multiuser diversity in multiuser cooperative networks
A low complexity approach of combining cooperative diversity and multiuser diversity in multiuser cooperative networks
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.
1053-587X
6247-6256
Lv, Tiejun
fb465673-1068-4cae-bb94-93ab1dd63f4d
Zhang, Zhang
9b809e47-8313-4d54-8b2b-70eb18085e23
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Lv, Tiejun
fb465673-1068-4cae-bb94-93ab1dd63f4d
Zhang, Zhang
9b809e47-8313-4d54-8b2b-70eb18085e23
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60

Lv, Tiejun, Zhang, Zhang and Yang, Shaoshi (2013) A low complexity approach of combining cooperative diversity and multiuser diversity in multiuser cooperative networks. IEEE Transactions on Signal Processing, 61 (24), 6247-6256. (doi:10.1109/TSP.2013.2284484).

Record type: Article

Abstract

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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Published date: December 2013
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 344552
URI: http://eprints.soton.ac.uk/id/eprint/344552
ISSN: 1053-587X
PURE UUID: 217829c7-db61-462b-a5a2-5e8467a5cc95

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Date deposited: 25 Oct 2012 09:13
Last modified: 14 Mar 2024 12:15

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Contributors

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

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