An Improved OFDM Channel Estimate Method

作者：HE Shao-yuan; HE Hai-lang

来源：计算机仿真, 2010, 27(2).

DOI：10.3969/j.issn.1006-9348.2010.02.079

• Channel estimation
• Orthogonal frequency division multiplexing(OFDM)
• MMSE
• LS

OFDM has become very important technology in wireless communication systems.And the accuracy of channel estimation will influence the performance of OFDM systems directly.This paper presents the Least Square and Minimum Mean-Square error and Singular Value Decomposition channel estimation based on block-type pilot assignment.In view of the contradiction of traditional estimators between performance and computational complexity,a simplified estimator for LS and MMSE are proposed.The broad sense uncorrelated scattering of time-varying Rayleigh multipath channel is adopted to estimate those algorithms.The simulation results show that the simplified estimator algorithm has preferable performance and lower complexity.

• 出版日期2010
• 单位邵阳学院