【摘要】 TCM是一种将差错控制编码与调制有机结合的编码调制技术,在保持信息传输速率不变的前提下增加信号数量,以增加信号的冗余度来进行抗干扰编码,使系统的频带利用率和功率资源同时得到有效利用。先对TCM编码调制技术和直接序列扩频系统进行了研究,然后给出了一种基于TCM-8PSK的直扩系统的仿真模型,并分析了其在不同干扰信道下的性能。更多还原

【Abstract】 TCM is a technique in combination of coding and modulation. With premise of the same information transmission rate,when the number of signals increases,the redundancy of information for anti-jamming coding would rise,thus the system bandwidth and power is effectively utilized. This paper first discusses the TCM techniques and direct sequence spread spectrum systems,and then gives a simulation model of DSSS system based on TCM-8PSK. And it also analyzes the system performance under different jamming channels.更多还原