移动通信PHS的接收性能研究

Study on the Performance of PHS Reception in Mobile Radio Channel

重点研究PHS空中接口技术的误比特率(BER)性能.首先研究了PHS物理层结构,然后给出了3种可能应用于PHS接收机的合并方法,包括检测后最大比值合并(PDMRC)、检测后等增益合并(PDEGC)与选择合并(SC).最后给出了不同信道条件下的PHS的误比特率性能仿真的结果与分析.仿真表明同信道干扰与最大多径延迟扩展对系统性能影响很大,在通常情况下采用PDMRC具有最好的性能.

This paper study the bit error performance of PHS air interface.Then it address the physical layer of PHS and then give the 3 combining technique schemes possibly implemented in PHS recever, including postdetection maximal ratio combiner (PDMRC), postdetection equal-gain combiner and selective combiner. At last simulation result and analysis of PHS BER performance in various mobile radio channel are given. Simulation shows co-channel interference and maximum multi-path delay spread have significant impact on the BER performance and PDMRC gives the best performance in most common environment.