航空移动通信中OFDM信道估计方法的研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2007, Vol. 28 ›› Issue (2): 380-384.

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Research on Channel Estimation of OFDM Systems in Aviation Mobile Communications

LIU Jie-hua, YANG Dong-kai, CHANG;Qing, ZHANG Qi-shan

Faculty 202, Beijing University of Aeronautics and Astronautics

Received:2005-12-05 Revised:2006-04-10 Online:2007-03-10 Published:2007-03-10
Contact: ZHANG Qishan

Abstract

Abstract:

Orthogonal frequency division multiplexing (OFDM) will be widely used in aviation mobile communications for its own advantages,but the complex channel environment and the intercarriers interference (ICI) caused by Doppler frequency offset will do harm to its performance.Based on the general channel model of aviation mobile communications, the ICI mechanism is analyzed, and the lowpass filtering in frequency domain is adopted to restrain the influence from ICI and channel noise to affect the least square (LS) channel estimation based on comb-type pilot tone.

Key words: aviation , mobile , communication, , Doppler , frequency , offset, , lowpass , filter, , channel , estimation

CLC Number:

TN914.15

LIU Jie-hua;YANG Dong-kai;CHANG Qing;ZHANG Qi-shan. Research on Channel Estimation of OFDM Systems in Aviation Mobile Communications[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(2): 380-384.

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Research on Channel Estimation of OFDM Systems in Aviation Mobile Communications

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