A New Doppler Spread Estimation Using FFT

Goo-Hyun PARK  Daesik HONG  Chang-Eon KANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E86-B   No.9   pp.2799-2803
Publication Date: 2003/09/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
Keyword: 
maximum Doppler frequency estimation,  FFT,  

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Summary: 
In this letter, a novel maximum Doppler spread estimation algorithm for mobile communication systems is proposed. The proposed method uses an average power spectrum of the received signal. The fast Fourier transform (FFT) of received pilot signal, which is related with the maximum Doppler frequency is used for obtaining an instantaneous power spectrum. The proposed algorithm shows a good performance over wide Doppler frequency in low signal-to-noise ratio (SNR<10 dB). Especially, in the proposed method, any other channel information such as SNR is not required.