Analysis and optimization of power spectrum on EBPSK modulation in throughput-efficient wireless system  

高效无线系统中EBPSK调制的功率谱分析及优化(英文)

作　　者：冯熳[1] 戚晨浩[1] 吴乐南[1] 

机构地区：[1]东南大学信息科学与工程学院,南京210096

出　　处：《Journal of Southeast University(English Edition)》2008年第2期143-148,共6页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.60472054);the Natural Science Foundation of Jiangsu Province(No.BK2007103)

摘　　要：In order to satisfy increasingly greater demand for the performance of communication systems, a throughput efficient wireless system based on the extended binary phase shift keying （EBPSK） modulation is presented. Simultaneously, corresponding analysis of power spectra is also given with a brief process. The optimal waveform is proposed without useful information loss, by removing linear spectra presenting periodic components. On this basis, the reasonable definition of bandwidth is discussed, which indicates that the EBPSK belongs to the category of the ultra narrow band （UNB） throughput-efficient communication. Meanwhile, the modulation parameters＇ effects on bandwidth, transmission rate and transmission performance are analyzed. Results illustrate the validity of theoretical analysis and spectrum optimization. Results also prove that this UNB system can obtain good bit error rate （BER） performance with high spectra efficiency.为了满足人们对通信系统传输率等性能越来越高的需求,提出了基于扩展的二元相移键控(EBPSK)调制的高效无线系统,详细推导了EBPSK功率谱解析表达式.在不损失有用信息的前提下,通过直接在表达式中去除表示周期分量的线谱,导出新的频谱优化方法.在此基础上讨论了合理的带宽定义方式,表明了EBPSK属于超窄带高效通信的范畴.分析了EBPSK调制参数对带宽、传输速率及传输性能的影响.实验结果表明了理论谱表达式及优化的正确性,也证明这种超窄带系统在得到较高的频谱效率的同时可以达到很好的误码率性能.

关 键 词：extended binary phase shift keying power spectrum ultra narrow band spectra efficiency 

分 类 号：TN911[电子电信—通信与信息系统]