摘要
首次从理论上分析了ＡＤＣ（ＡｎａｌｏｇｔｏＤｉｇｉｔａｌＣｏｎｖｅｒｔｅｒｓ）对多用户同步ＣＤＭＡ系统性能的影响．以同步正交码为基础模拟了单用户扩频系统和１６用户Ｓ－ＣＤＭＡ系统的性能．结果表明，多用户ＣＤＭＡ系统要想保持一定的性能，ＡＤＣ量化比特数必须有所提高．对限幅方案。
The effects of ADC parameters on the performance of multiuser S CDMA system is studied. Based on synchronous and orthogonal code set, the simulation of the single user spread spectrum system and the 16 active users CDMA system is carried out. The results prove that the quantization bit number of multiuser CDMA system should be increased if the system performance must be maintained above some level. The simulation results can provide useful reference for designing ADC and correlator of CDMA system.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
1997年第1期65-70,共6页
Journal of Beijing University of Posts and Telecommunications
关键词
码分多址联接
扩频通信
多址干扰
CDMA
analog to digital converters
spread spectrum communication
multiple access interference
