吉林大学学报（信息科学版）2012，Vol.30Issue(4)：341-346,6.
两种OFDM多普勒估计算法在水声信道中的比较
Comparison Two Dopplor Estimation Algorithms of OFDM in Underwater Acoustic Channels
摘要
Abstract
In order to compare the advantage and shortcoming of two Doppler estimation algorithms for OFDM (Orthogonal Frequency-Division Multiplexing) in underwater acoustic communication, a lacustrine experiment was carried out. The replica correlation time delay difference estimation algorithm is simple and easy to achieve? and the null subcarriers algorithm is complex and accurate. The same experimental dates are estimated and compensated based on the two algorithms, and error bit rates are compared. The results show that the two methods have mainly uniform error bit rates in slow-varying UWA (Underwater Acousitic) channels,but the null subcarriers algorithm is more stable in fast time-varying channels.关键词
水声通信/正交频分复用/多普勒估计/空载波/线性调频信号Key words
underwater acoustic communication/ orthogonal frequency-division multiplexing (OFDM)/Doppler estimation/null subcarriers/linear frequency modulation(LFM)分类
信息技术与安全科学引用本文复制引用
陈阳,张艺朦,赵安邦,余赟,尹禄..两种OFDM多普勒估计算法在水声信道中的比较[J].吉林大学学报（信息科学版）,2012,30(4):341-346,6.基金项目
国家自然科学基金资助项目(60802060) （60802060）
水声技术重点实验室基金资助项目(9140C200201090C2004) （9140C200201090C2004）
中央高校基本科研业务费专项基金资助项目(F030102) （F030102）
海洋公益性行业科研专项经费基金资助项目(gz2010001) （gz2010001）
国家自然科学基金青年基金资助项目(51009041) （51009041）
