The investigation on two-dimensional pilot-symbol-aided channel estimation method for OFDM system

• 作 者: 孙居颖
• 机 构: College of Electronic Information & Control Engineering,Beijing University of Technology,Beijing 100
• 出 处: High Technology Letters
• 发表日期: 2008年04期
• 关键词: pilot multiplexing wideband symbol aided addressed fading instead assumed direct

Channel estimation for orthogonal frequency division multiplexing (OFDM) system has attractedwidespread attention.In this paper,a novel efficient two-dimensional (2-D) channel estimation algorithmbased on fast Fourier transform (FFT) is proposed for a time-variant,frequency-selective wideband wire-less channel.Both theoretical analysis and simulation results are addressed in the paper.The simulationresults prove that the proposed algorithm has simpler implementation,better performance and wider appli-cation than other traditional decision-directed algorithms.

Channel estimation for orthogonal frequency division multiplexing (OFDM) system has attractedwidespreadown.In this paper, a novel efficient two-dimensional (2-D) channel estimation algorithm based on fast Fourier transform (FFT) is proposed for a time- selective wideband wire-less channel.Both theoretical analysis and simulation results are addressed in the paper. The simulation results prove that the proposed algorithm has simpler implementation, better performance and wider appli-cation than other traditional decision-directed algorithms.