电子学报2011，Vol.39Issue(4)：842-847,6.
复杂环境下基于噪声匹配的最大多普勒频移估计
A Maximum Doppler Shift Estimation Based on Noise Matching Under the Complex Environment
摘要
Abstract
According to the demand of maximum Doppler shift estimation under the urban complex channel environment, a novel maximum Doppler estimation is proposed based on noise matching. Through a low-pass filter designed (LPF) to filter the received signal, interference noise/and the Doppler detector can be matched, thus the estimation peffomance of the maximum Doppler shift is increased effectively. Furthermore, by theoretical deduction of the best filtering ratio in Rice fading channel, two important deductions about the estimated error of proposed algorithm are presented. Monte-Carlo simulation results show that compared with the existing algorithms based on logarithmic envelope (LE) and modified covariance (MCOV), the proposed algorithm improves estimation performance by 2 ～ 5dB under the typical urban environment and low signal-noise-ratio (SNR ＜ 0dB) conditions. Therefore, proposed algorithm can ensure an accurate estimation of maximum Doppler shift and the receiving performance of mobile communication systems.关键词
最大多普勒频移估计/莱斯衰落信道/噪声匹配Key words
maximum Doppler shift/Rice fading channel/noise matching分类
信息技术与安全科学引用本文复制引用
吴利平,李赞,李建东,陈晨..复杂环境下基于噪声匹配的最大多普勒频移估计[J].电子学报,2011,39(4):842-847,6.基金项目
国家科技重大专项(No.2010ZX03006-002-04) （No.2010ZX03006-002-04）
国家自然科学基金(No.61072070) （No.61072070）
新世纪优秀人才支持计划(No.NCET-07-0653) （No.NCET-07-0653）
国家863高技术研究发展计划(No.2009AA01Z237) （No.2009AA01Z237）
高等学校学科创新引智计划(No.B08038) （No.B08038）
长江学者和创新团队发展计划(No.IRT0852) （No.IRT0852）
