Full Rate and Full Diversity STBC in Decode-and-Forward Relay Systems
Diversity techniques are very effective tools to increase signal reception quality in Rayleigh fading channels. A novel space-time block coding method for cooperative relay networks is proposed which guarantees full diversity for any number of mobile relays with minimal delay, provided that few bits of feedback from the destination to the source and the relays are available. As in the case of orthogonal space-time block codes, all transmitted symbols are separately decoded both in the relays and the destination. Therefore, decoding complexity is linear. In our proposed scheme, larger number of codes can be generated for improved coding gain. The performance of the proposed scheme is investigated for cooperative communication.It is shown that the new approach provides SNR improvement,and it is more resilient to feedback errors compared to the antenna selection technique on the basis of same number of feedback bits.
cooperative communication system transmit antenna selection space-time block coding transmit diversity.
Yong Wang Hui Li
Ministry of Education Key Lab. of Computer Network and Information Security,School of Telecommunications Engineering,Xidian University,Xian, China
国际会议
南宁
英文
135-138
2010-10-13（万方平台首次上网日期，不代表论文的发表时间）