DCT-Based Channel Estimation for Wireless OFDM Systems with the Hexagonal Pilot Pattern

摘要：

When there are some virtual subcarriers and high Doppler frequency in practical orthogonal frequency division multiplexing (OFDM) system, we adopt discrete cosine transform (DCT)-based channel estimator instead of conventional DFT-based one to reduce the performance deterioration. And as hexagonal distribution of pilots is optimum in term of sampling efficiency, that is, it provides better performance than the rectangular one. So a two dimensional (2-D) DCT-based channel estimator with hexagonal pilot patterns is proposed, and detailed derivation is given. Simulation results show that the performance of the proposed method can well approach the 2-D Wiener filtering estimator.

作者: Lizhong Han Bingyang Wu

作者单位: National Mobile Communication Research Laboratory Southeast University, Nanjing 210096, P.R.China

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）