计算机工程Issue(3)：147-151,5.DOI:10.3969/j.issn.1000-3428.2014.03.030
OFDM水声通信多普勒频移采样率转换算法
Algorithm of Doppler Shift Sample Rate Conversion in OFDM Underwater Acoustic Communication
摘要
Abstract
To the Orthogonal Frequency Division Multiplexing(OFDM) Underwater Acoustic(UWA) communication systems, the traditional estimation algorithm based on data aided for Doppler Shift Factor(DSF) can reduce the system transmission rate. In addition, resampling algorithm is often used for the sample rate conversion in the receiving end, but there is a problem of large calculation in the process. Therefore, a novel algorithm about DSF estimation and sample rate conversion are proposed based on oversampling technique. The DSF can be estimated by comparing the sampling points with the transmitting and receiving signals. And the linear interpolation algorithm is adopted to finish the sample rate conversion. Theroy analysis and simulation results show that the algorithm not only can guarantee the system performance but also can reduce the receiver calculation amount. So it is applicable to the high-speed real-time UWA com-munication systems.关键词
水声通信/正交频分复用/多普勒频移/过采样/线性插值/采样率转换Key words
Underwater Acoustic(UWA) communication/Orthogonal Frequency Division Multiplexing(OFDM)/Doppler Shift(DS)/oversampling/linear interpolation/sample rate conversion分类
信息技术与安全科学引用本文复制引用
郭铁梁,赵旦峰,钱晋希..OFDM水声通信多普勒频移采样率转换算法[J].计算机工程,2014,(3):147-151,5.基金项目
黑龙江省自然科学基金资助项目(F200810)。 （F200810）
