Performance Analysis of Distributed Space-Time Coded Cooperative Multicast
Cooperative multicast/broadcast technique which can improve performance of traditional wireless multicast communications system has been paid a broad attention. However, in 2-hop Cooperative multicast system 8, it is easy to arise interference in destination node if all the nodes who decode message correctly in phase 1 forward information to other users simultaneously. In this paper, to solve this problem, we propose the distributed space-time coded cooperative multicast (DSTCCM) scheme based on coded cooperation, where the base station (BS) sends a part of the information and the relays transmit the rest. The system performance is improved by making use of coding gain provided by the DSTC coded cooperation. The capability of the proposed scheme is evaluated in terms of the outage probability and diversity-multiplexing tradeoff (DMT). The closed-form of the average outage probability is derived. Asymptotic behavior of the average outage probability in high SNR regions is analyzed and it confirms that the proposed scheme is efficient in the sense of achieving full diversity. Finally, we compare the average outage probability and DMT for different transmission protocols in the simulations.
Terms—Wireless communications cooperative multicast ditributed space-time coded outage probability diveristiymultiplexing tradeoff.
Hui TIAN Wei XIE Youyun XU Lianguo WU Maoqiang ZUO
Institute of Communications Engineering, PLAUST Nanjing, China Institute of Communications Engineering, PLAUSTNanjing, China
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）