摘要
基于PSK调制,以直接序列扩频通信系统为研究对象,在MATLAB仿真环境下分析了直接序列扩频前后的通信系统模型的误码率性能。给出了直接扩频通信系统误码率与信噪比的关系曲线,仿真结果表明,直接序列扩频信号要比不扩频信号,更准确、可靠,因此直扩系统具有更好的性能。
Based on PSK modulation,taking direct sequence spread spectrum（DSSS） communication system as the research object,and in MATLAB simulation environment,the direct sequence spread spectrum before and after the bit error rate performance of the communication system model was analyzed.The curve about DSSS conmmunication system bit error rate and SNR was also given.The simulation results expatiate the direct sequence spread spectrum signal is much more accurate and reliable than the non-spread spectrum signal,to this effect,the DS system has better performance
出处
《辽宁工业大学学报（自然科学版）》
2010年第5期292-295,共4页
Journal of Liaoning University of Technology(Natural Science Edition)
关键词
直接序列扩频
信噪比
误码率
direct sequence spread spectrum
signal to noise ratio
bit error rate
