摘要
研究了ＢＰＳＫ 调制的Ｍ 进制正交码直接序列扩频系统在多径衰落信道中的相干接收性能．推导了不采用分集接收和采用选择性分集合并两种策略时平均误比特率表达式，并给出了相应的近似计算方法．着重讨论了非理想接收条件下接收机存在同步误差时的系统接收性能，并在此基础上分析了信道特征、接收策略以及码片定时误差和载波相位误差对系统性能的影响．
The performance of BPSK modulated M ary direct sequence spread spectrum system in the multipath fading channel is studied. The error probability expressions for two receiving policies: non diversity and selection diversity are derived, and the approximate expressions are given. Different from other documents, this paper focuses on the case of non ideal receiving conditions, which take into account the effect chip timing and carrier phase errors. Finally, channel characteristics, receiving policies, and synchronization errors effects on the performance are discussed.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
1999年第5期558-563,共6页
Journal of Xidian University
基金
国家自然科学基金
