无线电工程2017，Vol.47Issue(7)：30-33,98,5.DOI:10.3969/j.issn.1003-3106.2017.07.07
混合载波调制系统中的阈值DFT信道估计算法
A Threshold Channel Estimation Algorithm Based on Hybrid Carrier Modulation
摘要
Abstract
Traditional DFT channel estimation algorithm has a lower complexity than the minimum mean square error algorithm,and provides a better performance than the least square algorithm.However,traditional DFT-based channel estimator just removes the noise in the channel impulse response (CIR) beyond the length of the cyclic prefix (CP),while the noise within the length of CP is not addressed at all.To overcome the deficiency of this algorithm,new threshold DFT channel estimation with hybrid carrier modulation technique is proposed.The threshold value is set within the cyclic prefix.It will retain the data greater than the threshold value,and set the data less than threshold value to zero.Thus it could suppress the noise within the length of CP.Simulation results demonstrate that the proposed algorithm can effectively suppress the noise within the cyclic prefix.And the performance is optimized under different modulation parameters.关键词
混合载波调制/均衡技术/载波频偏/阈值门限Key words
Hybrid Carrier Modulation/equalization technology/carrier frequency offset/threshold分类
信息技术与安全科学引用本文复制引用
郑兆飞,谢跃雷,万杰..混合载波调制系统中的阈值DFT信道估计算法[J].无线电工程,2017,47(7):30-33,98,5.基金项目
国家自然科学基金资助项目(61466015). （61466015）
