An Efficient Channel Estimation Method for OFDM Systems Based on Comb Pilots

摘要：

　　This paper proposes an efficient channel estimation method based on comb pilots.This method is used for OFDM system under time-variant conditions.When under the high speed mobile channel,Doppler frequency shift will cause serious inter-carrier interference (ICI).As it is known,the ICI is manifest as noise in many cases.Therefore,a low pass filter can be used in the transform domain to reduce ICI.The estimation of channel transmission response can be estimated by zero padding,DFT and high precision interpolation technique.Finally,through equalization algorithm,signal correction can be reached.

关键词： estimation OFDM ICI DFT equalization

作者: Yang Guangxi Deng Lunhui Chen Xiang

作者单位: Engineering Center of Digital Audio and Video Communication University of China,CUC Beijing, China

会议类型: 国际会议

会议名称: 2015 IEEE Advanced Information Technology, Electronic and Automation Control Conference(IAEAC 2015)(2015 IEEE先进信息技术,电子与自动化控制国际会议)

会议地点: 重庆

会议语种:英文

页码: 1029-1033

在线出版日期: 2015-12-19（万方平台首次上网日期，不代表论文的发表时间）