Fast Frequency Offset Estimation Method for OFDM

摘要：

A fast frequency offset estimation scheme for OFDM is proposed. This scheme is low-overhead oriented, which uses only one OFDM symbol with L identical slots as preamble. By extracting the phase from correlation between two identical halves of the preamble, the fractional frequency offset is estimated and then compensated. After reshaping the compensated preamble into many L-point sub-symbols, which are processed by FFT algorithm, the estimate of integer frequency offset is accomplished by finding the maximum magnitude of the combined frequency domain signals. To further reduce the computational load of the algorithm, the scheme is carried out in a multistage manner. Simulation results show that the proposed scheme exhibits good performance, while maintaining a low complexity.

关键词： OFDM frequency offset low complexity

作者: Ming Ding Han-wen Luo Yun Wu Chong-Guang Yan

作者单位: Dept.Of Electronic Engineering,Shanghai Jiaotong University Advanced R&D Centre,Sharp Electronics(Shanghai) Co.,Ltd.

会议类型: 国际会议

会议名称: 第二届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 武汉

会议语种:英文

在线出版日期: 2006-09-01（万方平台首次上网日期，不代表论文的发表时间）