OFDM Channel Estimation with Impulse Noise Cancellation

摘要：

Impulse noise is prevalent in urban and indoor radio channels where OFDM system is deployed. In this paper we propose a novel impulse noise cancellation algorithm for OFDM channel estimation under impulse noise. The algorithm first calculates the frequency domain difference on pilot subcarriers between the received signal and the recovered signal from least square channel estimate. Then the difference is used to estimate a sufficient statistics of the impulse components of time domain noise. Finally the impact of the impulsive noise components on the original channel estimation is cancelled to produce a new channel estimate. Simulation results show that our algorithm can improves OFDM channel estimation performance significantly under impulse noise environments.

关键词： OFDM channel estimation impulse noise

作者: Xunyi Yu Ping Lin Zhiqiang He Weiling Wu

作者单位: School of Inform. Eng., Beijing Univ. of Posts and Telecomm. 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）