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差分协同通信系统在平坦瑞利衰落信道下存在着“误码平层”效应。文章在研究判决反馈差分检测(DFDD)对点对点通信性能影响基础上,将DFDD技术应用到差分协同通信系统当中,提出了基于DFDD的差分协同检测方案,通过仿真验证了该方案能有效地降低系统的“误码平层”效应,增强了差分协同分集系统在平坦瑞利衰落信道下的性能。
The differential cooperative communication system has the “error floor” effect under the flat Rayleigh fading channel. Based on the study of the effect of DFDD on P2P communication performance, DFDD technology is applied to the differential cooperative communication system, and a DFDD-based differential cooperative detection scheme is proposed. The simulation results show that this scheme can effectively reduce the system complexity The “error floor” effect enhances the performance of a differential cooperative diversity system over a flat Rayleigh fading channel.