A Joint Detected-Directed Carrier Frequency Offset and Channel Estimation Technique for OFDM Systems

摘要：

A new joint carrier frequency offset (CFO) and channel estimation technique by using the detected data is developed for OFDM systems. The synchronization information contained in the channel estimated results which is gained by LS channel estimation method is extracted based on the maximum likelihood (ML) criterion for synchronization estimation, and then the estimated results of CFO are used to correct the initial estimated channel and make it approach to the real channel more strictly. In order to suppress noise, the closed-loop schemes are described in details. Set appropriate values for the loop factors, the algorithm can be used to tracking the time variable channel.

关键词： OFDM CFO channel estimation combined

作者: ZHAO Dan YU Quan

作者单位: School of Electronic Science and Engineering National University of Defense Technology Changsha, Chi Graduate school of China Electronics Equipment System Engineering Corporation Beijing, China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）