Design of ARQ protocols for two-user cooperative diversity systems in wireless networks

Automatic repeat-request (ARQ) protocols for two-user cooperative diversity system employing Alamouti space-time coding are investigated in this paper. A whole cooperative transmit frame of an original cooperative system consists of three sub-frames. According to different feedback schedules in a transmit frame at the destination, two basic ARQ protocols, namely post-cooperating and pre-cooperating, are proposed and analyzed. We show that both proposed ARQ protocols can improve the throughput in two-user cooperative system. Pre-cooperating protocol yields 50% gains in users' throughput than post-cooperating protocol if both users have high user-destination average received signal-to-noise ratio (SNR) at the destination. Nevertheless, if both of user-destination average received SNRs are low, post-cooperating protocol is more effective than pre-cooperating protocol. Proposed protocols provide useful basic tools for designing more complicated ARQ protocols. Finally, simulation results verify our analysis.

[1]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[2]  Geert Leus,et al.  Multi-user space-time coding in cooperative networks , 2003, 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)..

[3]  Georgios B. Giannakis,et al.  Cross-Layer combining of adaptive Modulation and coding with truncated ARQ over wireless links , 2004, IEEE Transactions on Wireless Communications.

[4]  Elza Erkip,et al.  User cooperation diversity. Part II. Implementation aspects and performance analysis , 2003, IEEE Trans. Commun..

[5]  Angel E. Lozano,et al.  Multiple ARQ Processes for MIMO Systems , 2004, EURASIP J. Adv. Signal Process..

[6]  Baoyu Zheng,et al.  A New Cooperative Diversity Scheme for Next Generation Wireless Network , 2008, 2008 5th IEEE Consumer Communications and Networking Conference.

[7]  Gregory W. Wornell,et al.  Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks , 2003, IEEE Trans. Inf. Theory.

[8]  Vijay K. Bhargava,et al.  Differential modulation for two-user cooperative diversity systems , 2005, IEEE J. Sel. Areas Commun..

[9]  Sagar Naik,et al.  Performance analysis of the node cooperative ARQ scheme for wireless ad-hoc networks , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[10]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[11]  Lin Dai,et al.  Cross-layer design for combining cooperative diversity with truncated ARQ in ad-hoc wireless networks , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[12]  Matthew C. Valenti,et al.  Practical relay networks: a generalization of hybrid-ARQ , 2005 .

[13]  Guanding Yu,et al.  Efficient ARQ protocols for exploiting cooperative relaying in wireless sensor networks , 2007, Comput. Commun..