无线电通信技术Issue(4)：104-107,4.DOI:10.3969/j.issn.1003-3114.2015.04.27
一种多进制扩频通信基带接收的实现方法
Baseband Receiver Design for M-ary Spread Spectrum System
洪亮 1云颖1
作者信息
- 1. 上海航天电子技术研究所，上海201109
- 折叠
摘要
Abstract
In order to increase the transmission rate of spread spectrum system with limited bandwidth and no loss of sensitivity,the technique of M⁃ary spread spectrum is adopted.Instead of spreading signal spectrum by only one kind of PN sequence,the data source to be transmitted is represented by different PN sequences. Thecross⁃correlation value between different PN sequences is small while the auto⁃correlation value is big. An implementation method using FPGA is presented based on the principle of M⁃ary spread spectrum. Detailed description of theory and technical approach is given for digital down conversion,PN sequence acquisition and tracking,carrier acquisition and tracking.Data rate can be increased by using the method of M⁃ary spread spectrum.In the project application,M⁃ary spread spectrum is proved to be a reliable and effective method.关键词
扩频通信/多进制/载波跟踪/伪码捕获/数字下变频Key words
spread spectrum communication/M-ary/carrier tracking/code acquisition/digital down conversion分类
航空航天引用本文复制引用
洪亮,云颖..一种多进制扩频通信基带接收的实现方法[J].无线电通信技术,2015,(4):104-107,4.
