瑞利-对数正态联合衰落下多跳宏分集的性能分析

基于多跳传输的特点,提出了一种多跳宏分集。以3个基站构成的六边形宏分集为模型,分别在纯阴影和联合衰落信道下研究了上行链路最大比合并(MRC)的DPSK误码率。分析表明,新系统的性能要优于传统单跳宏分集系统,多跳中继能增强系统性能随移动终端位置变化的鲁棒性,对改善无线链路的可靠通信较有好处。

Performance Analysis of Multi-hop Macro-diversity in Rayleigh-Lognormal Composite Fading

Based on the concept of multi-hop transmission, a multi-hop macro-diversity is presented. In pure lognormal and Rayleigh-lognormal composite fading channels, a hexagonal macro-diversity cellular system is investigated. The Maximum Ratio Combing (MRC) is considered for the uplink analysis of the Bit Error Rate (BER) for DPSK. Numerical results show that the performance of the new system outperforms that of the conventional single-hop macro-diversity system. The multi-hop relaying can enhance the robustness of system performance to the different location of one mobile station, and it is benefit to reliable communication of the radio link.