高技术通讯（英文版）2007，Vol.13Issue(2)：164-168,5.
Efficient integer frequency offset estimation for OFDM systems
Efficient integer frequency offset estimation for OFDM systems
摘要
Abstract
An efficient scheme of integer frequency offset estimate for orthogonal frequency division multiplexing (OFDM) systems is proposed based on a training symbol with several identical parts. In this scheme, the received training symbol is first reshaped into several sub-symbols. It shows that the reshaping process introduces time diversity multiplexing. After a special fast Fourier transform (FFT) algorithm is applied to the sub-symbol, the integer frequency is estimated by finding the maximum magnitude of the resulting frequency domain signal. To improve the estimate performance, diversity combining methods are presented to make full use of the multiple frequency domain sub-symbols. Compared to the traditional scheme, the proposed one has an improved estimate performance demonstrated by the computation simulation, while maintaining a very low complexity.关键词
OFDM/estimation/integer carrier frequency offset/FFTKey words
OFDM/estimation/integer carrier frequency offset/FFT分类
数理科学引用本文复制引用
Wu Yun,Ding Ming,Luo Hanwen,Huang Jianguo,Liu Renmao..Efficient integer frequency offset estimation for OFDM systems[J].高技术通讯（英文版）,2007,13(2):164-168,5.基金项目
Supported by the High Technology Research and Development Program of China (No.2003AA12331007) and the National Natural Science Fundation of China (No.60572157). （No.2003AA12331007）
