1bit量化相关接收DS/CDMA通信方式及性能

DS/CDMA communication system and its performance with 1 bit quantization coherent receiver

分析了１ｂｉｔ量化相关接收时ＤＳ／ＣＤＭＡ系统的性能．通过对码片错误概率和码片信噪比的分析，讨论了系统性能与用户数、处理增益等之间的关系，提出一种基于１ｂｉｔ量化相关接收的扩频码分多址通信方式．该方式中扩频过程与数据帧格式相结合，在前向链路的各路信号中引入均匀延时并在中频段相叠加，这对于进行低成本的、基于数字相关匹配滤波器的ＣＤＭＡ系统设计具有一定的参考价值．

The performance of the DS/CDMA system with one bit quantization coherent reception is analyzed. By analyzing the chip error rate and chip signal to noise ratio the relationships between the system performance, the number of users, and the processing gain are given. This paper presents a spreadspectrum code division multiple access mode based on one bit quantization coherent reception, in which the spreadspectrum process is combined with the digital frame format and the signals in the forward link are equally delayed and put together in the intermediate frequency band. The results are useful for the design of the lowcost CDMA system based on the digital coherent matched filter.