摘要
介绍了一种零中频DSSS(直接序列扩频 )数字接收机的基带算法方案 .给出了PN码捕获及跟踪、载波解调和自动频率控制算法 ,最后给出系统性能仿真分析 .该方案具有较强抗噪声能力 ,算法复杂度低 ,基带数字信号处理部分仅用一片APEX2
Acquisition of PN code and its tracking algorithm, carrier demodulation and automatic frequency control(AFC) were described. The system performance analysis was presented. This algorithm possessed high antinoise ability and good complexity. The processing part of baseband digital signal can be implemented with an APEX20KE chip.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第9期21-24,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
扩频接收机
零中频
PN码同步
载波跟踪
自动频率控制
spread spectrum receiver
zero intermediate frequency
PN code synchronization
carrier tracking
automatic frequency control
