A Novel Three-stage Frequency Offset Estimator for OFDM

摘要：

A novel frequency offset estimate method is proposed for OFDM systems. In the proposed method, a special preamble composed of two training symbol blocks with several widesense identical parts is designed. To obtain a large estimate range together with a good estimation performance, a novel three-stage CFO estimate scheme based on the designed preamble is proposed. In this scheme, initial CFO estimates are first obtained over the two training symbol blocks by means of a novel two-stage estimate method. In the third stage, the two initial CFO estimates are jointly used to enlarge the CFO estimate range. Simulation results demonstrate that the novel three-stage frequency offset estimator has a satisfying estimate performance while achieving a large estimate range and maintaining a low computational complexity.

关键词： frequency offset estimation OFDM preamble three-stage

作者: Yun Wu Hanwen Luo Ming Ding

作者单位: Department of Electric Engineering Shanghai Jiao Tong University ,Shanghai,China

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）