多路中频数字化DS-CDMA空地数传系统的设计  

A Multiplexer IF Digital DS-CDMA Air-Ground Communication System

作　　者：王晓春[1] 左继章[1] 赖元东[2] 

机构地区：[1]空军工程大学工程学院,陕西西安710038 [2]95972部队,甘肃酒泉735018

出　　处：《火力与指挥控制》2009年第3期148-150,共3页Fire Control & Command Control

摘　　要：提出一种基于软件无线电的多路中频数字化DS-CDMA空地数传系统设计方案。发射通道将信息分解成16路并行码后用相互正交的PN码分别扩频,再由多通道数字上变频器AD6623完成BPSK调制,最后进行中频合成。接收通道在对16路接收信号并行解扩后再合并得到原始信息。A Multiplexer IF digital air-ground data communication system is presented. The symbols transferred by the transmitter are divided into 16 parallel streams that spread spectrum by 16 orthogonal PN sequences. Each DSSS signal is modulated to a digital BPSK IF stream separately at the same frequency by one AD6623＇s TSP channel, and all of them are combined in summation. The receiver despreads each DSSS signal separately and recoveries the symbols.

关 键 词：码分多址 多路中频数字化 软件无线电 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]