火力与指挥控制2017，Vol.42Issue(10)：114-117,123,5.DOI:10.3969/j.issn.1002-0640.2017.10.024
基于FQPSK调制的盲均衡算法
FQPSK-Based Blind Equalization Algorithm
摘要
Abstract
For the Doppler aeronautical channels and multipath fading problem,a blind equalizer based on decision feedback structure is studied to efficiently combat the effects of multipath fading. Super-exponential iteration algorithm convergence speed,low computation complexity,the modified index algorithm also has the phase information,can correct the constellation diagram phase rotation, reduce the steady state mean square error,speed up the convergence speed,reduce the bit error rate. The modulation of FQPSK has the feature of constant envelope,concentrated energy spectrum and anti-multipath. This paper proposes a blind equalizer based on the modulation of FQPSK. The simulation results show that the proposed blind equalizer may not only track and compensate the multipath channels,and reduce the bit error rate. The new method has better advantage of anti-interference ability compared with the blind equalization based on the modulation of QPSK.关键词
多径信道/盲均衡/FQPSK/QPSK/超指数Key words
multipath channels/blind equalization/FQPSK/QPSK/super-exponential分类
信息技术与安全科学引用本文复制引用
向元伟,彭卫东,尚耀波,林思铭..基于FQPSK调制的盲均衡算法[J].火力与指挥控制,2017,42(10):114-117,123,5.基金项目
国家自然科学基金(61401499) （61401499）
航空科学基金资助项目(20110196004). （20110196004）
