Blind Channel Estimation for SIMO OFDM Systems without Cyclic Prefix

摘要：

In sacrificing the bandwidth efficiency, the insertion of cyclic prefix (CP) is used in OFDM system to combat ISI and allow for a simple one-tap equalization scheme. In this paper, the OFDM system without CP equipped with multiple antennas at the receiver is studied. Without ignoring the ISI components, the subspace channel estimation and MMSE equalizers are proposed. Besides, due to the block Toeplitz structure of channel matrix, the block matrix scheme is developed to increase several times of sample vectors, which results in better performance of subspace channel estimation in a finite sample scenario. The computational complexity of the proposed method increases slightly over the conventional subspace method. Computer simulations are given to verity the effectiveness of the proposed methods.

关键词： Subspace SIMO-OFDM Cyclic Prefix

作者: Jung-Lang Yu Chia-Hao Chen Mei-Chen Lee

作者单位: Department of Electronic Engineering,Fu Jen Catholic University,Taipei,Taiwan

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）