A full-rate and low-detection complexity cooperative transmission scheme with cyclic delay diversity

作者：Xu Lei; Wang Li; Zhang Hongwei; Li Xiaohui^*

来源：Journal of Computational Information Systems, 2013, 9(11): 4593-4600.

DOI：10.12733/jcis6233

• Bit error rate (BER) performance
• Cooperative
• Cooperative transmission
• Cyclic Delay Diversity
• Full-rate
• Linear constellation precoding
• Low-detection complexity
• Space time frequency codes

The use of orthogonal channels for the cooperative transmission results in a loss of rate or spectral efficiency, and the exiting full-rate cooperative transmission schemes based on space-time code design have the defect of high detection complexity. Therefore, by adopting the non-orthogonal amplify and forward (NAF) mode, combining with the advantages of linear constellation precoding (LCP) technique and cyclic delay diversity (CDD) technique in this paper, a new full-rate wireless cooperative transmission scheme designed based on space-time-frequency codes is proposed. Compared with the existing full-rate cooperative transmission scheme, this new scheme is suitable for multi-relay scenario, and has the advantages of simple structure, low signal detection complexity which does not increase with the relay number. Compared with the equal power allocation scheme, the optimal power allocation scheme can make the system bit error rate (BER) performance improved.

• 出版日期2013
• 单位安徽大学