无线电通信技术2016，Vol.42Issue(6)：52-55,4.DOI:10.3969/j.issn.1003-3114.2016.06.13
基于极大似然准则的短猝发信号盲解调
Blind Demodulation Algorithm for Short Burst Signals Based on Maximum Likelihood Rules
摘要
Abstract
Aiming at the demand for blind demodulation for short burst signals, a blind demodulation algorithm for short burst signals based on maximum likelihood rules is presented based on short burst signal modeling. According to the maximum likelihood rules,the possible number of symbol estimated from the preceding signal parameters are searched and processed to obtain the start point of the first symbol, and the relevant likelihood of reconstitution signals and receiving signals are calculated. The exact estimation of symbol number of short burst signals is realized and the symbol sequence is restored.The blind demodulation algorithm is simulated by using binary quare wave signals,and the results show that the the correctness of symbol number estimation can be more than 95% and the demodulation effect is better when the symbol number of short burst signal is more than 8 and the signal⁃noise ratio is more than 10 dB.关键词
短猝发/盲解调/码元估计/极大似然准则Key words
short burst signals/blind demodulation/estimation of symbol number/maximum likelihood rule分类
信息技术与安全科学引用本文复制引用
闫红超,杨松..基于极大似然准则的短猝发信号盲解调[J].无线电通信技术,2016,42(6):52-55,4.基金项目
国家部委基金资助项目 （）
