TY - JOUR
T1 - High performance cooperative transmission protocols based on multiuser detection and network coding
AU - Han, Zhu
AU - Zhang, Xin
AU - Poor, H. Vincent
N1 - Funding Information:
Manuscript received February 13, 2007; revised August 1, 2007 and December 9, 2007; accepted January 23, 2008. The associate editor coordinating the review of this paper and approving it for publication was M. Uysal. Z. Han is with the Department of Electrical and Computer Engineering, University of Houston, Houston, TX USA (e-mail: [email protected]). X. Zhang is with the United Technologies Research Center, 411 Silver Lane, East Hartford, CT, USA. H. V. Poor is with the School of Engineering and Applied Science, Princeton University, Princeton, NJ, USA. This research was supported by the National Science Foundation under Grants ANI-03-38807 and CNS-06-25637. Digital Object Identifier 10.1109/TWC.2009.070181
PY - 2009/5
Y1 - 2009/5
N2 - Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in future wireless networks is limited. In this paper, by making use of multiuser detection (MUD) and network coding, cooperative transmission protocols with high spectral efficiency, diversity order, and coding gain are developed. Compared with the traditional cooperative transmission protocols with singleuser detection, in which the diversity gain is only for one source user, the proposed MUD cooperative transmission protocols have the merit that the improvement of one user's link can also benefit the other users. In addition, using MUD at the relay provides an environment in which network coding can be employed. The coding gain and high diversity order can be obtained by fully utilizing the link between the relay and the destination. From the analysis and simulation results, it is seen that the proposed protocols achieve higher diversity gain, better asymptotic efficiency, and lower bit error rate, compared to traditional MUD schemes and to existing cooperative transmission protocols. From the simulation results, the performance of the proposed scheme is near optimal as the performance gap is 0.12dB for average bit error rate (BER) 10-6 and 1.04dB for average BER 10-3, compared to two performance upper bounds.
AB - Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency and the requirement of orthogonal channels, its potential for use in future wireless networks is limited. In this paper, by making use of multiuser detection (MUD) and network coding, cooperative transmission protocols with high spectral efficiency, diversity order, and coding gain are developed. Compared with the traditional cooperative transmission protocols with singleuser detection, in which the diversity gain is only for one source user, the proposed MUD cooperative transmission protocols have the merit that the improvement of one user's link can also benefit the other users. In addition, using MUD at the relay provides an environment in which network coding can be employed. The coding gain and high diversity order can be obtained by fully utilizing the link between the relay and the destination. From the analysis and simulation results, it is seen that the proposed protocols achieve higher diversity gain, better asymptotic efficiency, and lower bit error rate, compared to traditional MUD schemes and to existing cooperative transmission protocols. From the simulation results, the performance of the proposed scheme is near optimal as the performance gap is 0.12dB for average bit error rate (BER) 10-6 and 1.04dB for average BER 10-3, compared to two performance upper bounds.
KW - And cooperative systems
KW - Coding
KW - Communication networks
KW - Detection
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U2 - 10.1109/TWC.2009.070181
DO - 10.1109/TWC.2009.070181
M3 - Article
AN - SCOPUS:77955741708
SN - 1536-1276
VL - 8
SP - 2352
EP - 2361
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 5
ER -