Research of OFDM Systems Channel Estimation Based on DFT Improved Algorithm

摘要：

Based on the training sequence in the DFT channel estimation method, the further research on the LS and MMSE channel estimation algorithm of OFDM systems is proceeding. To use of the characteristics that signal energy concentrated on time domain improves channel estimation algorithm. Only in the time the trails energy concentrated, the lower energy trail is approximate to zero, so algorithm complexity can be greatly reduced. Simulation result shows that the improved algorithm can not only effectively reduce the calculation amount of channel estimation algorithm, but also calculation accuracy of low SNR is better than original estimates.

关键词： OFDM system channel estimation LS & MMSE algorithm

作者: Xu Yan Lin Ying

作者单位: School of Electronic and Information Engineering Lanzhou Jiaotong University Lanzhou, China

会议类型: 国际会议

会议名称: 第四届国际计算机新科技与教育学术会议(2009 4th International Conference on Computer Science & Education)

会议地点: 南京

会议语种:英文

页码: 250-253

在线出版日期: 2009-07-25（万方平台首次上网日期，不代表论文的发表时间）