OFDM Channel Estimation Improvement Algorithm for Comb-type Pilot

摘要：

In order to improve the channel estimation accuracy of OFDM, its a good way to apply the channel model of FTCA for channel estimation. However, the FTCAbased channel estimation algorithm needs too many known conditions, it causes a poor practicability. This paper presents more practical MMSE criterionbased channel estimation algorithm on the basis of comb-type pilot, it firstly obtains LMMSE channel estimation of the pilot frequency position, and then use FTCA transform to obtain the channel transfer function of all subcarriers. The experiment proved that the algorithm achieves a performance close to LMMSE algorithm and improves the spectrum efficiency of the system.

关键词： OFDM Channel estimation LMMSE FTCA model

作者: Jun Shi Ze-min Liu

作者单位: School of Information and Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

会议类型: 国际会议

会议名称: 2012 International Conference on Future Communication and Computer Technology(2012未来通信与计算机技术国际会议ICFCCT 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 186-192

在线出版日期: 2012-05-19（万方平台首次上网日期，不代表论文的发表时间）