EBPSK调制信号功率谱分析  

PSD analysis of EBPSK modulated signals

作　　者：张士凯[1] 吴乐南[1] 

机构地区：[1]东南大学信息科学与工程学院,江苏南京210096

出　　处：《电波科学学报》2008年第3期496-500,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(No.60472054);江苏省高新技术研究资助项目(No.BG2004035)

摘　　要：调制技术对数据传输效率有重要意义。提出EBPSK调制方法,推导了其功率谱解析表达式,给出EBPSK在不同调制指数时功率谱理论值与仿真结果,验证了理论分析的正确性。同时,揭示了EBPSK已调信号功率谱随调制角变化的规律;并对功率谱、频谱效率及其与抗干扰性能关系进行了分析。Modulation technique is very meaningful for the digital data transmission efficiency. A EBPSK modulation method is presented and the analytic expression of power spectra is derived in this paper. The validity of the method is proved by theoretical and simulation results of EBPSK signals at different modulation index. Furthermore, PSD changing characteristics of EBPSK modulated signals and the relation of power spectra and bandwidth efficiency and the performance of anti--interference are analyzed.

关 键 词：EBPSK(Extended BPSK) 功率谱 频谱效率 

分 类 号：TN919.6[电子电信—通信与信息系统]