A full-rate cooperative relay transmission scheme with randomized cyclic delay diversity

作者：Xu Lei; Bao Menglin; Jiang Ran; Zhang Hongwei^*; Li Xiaohui

来源：Journal of Computational Information Systems, 2014, 10(1): 275-284.

DOI：10.12733/jcis8814

• Bit error rate (BER) performance
• Cyclic Delay Diversity
• Frequency diversity
• Frequency-selective fading channels
• Linear constellation precoding
• Low-complexity detections
• Space time frequency codes
• Spectrum efficiency

Randomized cyclic delay diversity (RCDD) is an effective means to capture both the space diversity and the frequency diversity with low complexity detection over frequency-selective fading channels. Since many existing full-rate cooperative relay transmission schemes have the disadvantages of low spectrum efficiency and high complexity detection, a practical and low complexity detection full-rate distributed cooperative relay transmission scheme is proposed in this paper by taking advantages of the randomized cyclic delay diversity method and the linear constellation precoding (LCP) technology. The bit error rate (BER) performance of the proposed scheme is superior to that of the system with fixed cyclic delay diversity (FCDD) when the number of subcarriers is sufficiently large. Moreover, the system diversity gain improves with the multipath number of the frequency-selective fading channel and the relay number increases.

• 出版日期2014
• 单位安徽大学