WU Li-ping, LI Zan, LI Jian-dong, et al. A Maximum Doppler Shift Estimation Based on Noise Matching Under the Complex Environment[J]. Acta Electronica Sinica, 2011, 39(4): 842-847.
WU Li-ping, LI Zan, LI Jian-dong, et al. A Maximum Doppler Shift Estimation Based on Noise Matching Under the Complex Environment[J]. Acta Electronica Sinica, 2011, 39(4): 842-847.DOI：
According to the demand of maximum Doppler shift estimation under the urban complex channel environment
a novel maximum Doppler estimation is proposed based on noise matching.Through a low-pass filter designed (LPF) to filter the received signal
interference noise and the Doppler detector can be matched
thus the estimation performance of the maximum Doppler shift is increased effectively.Furthermore
by theoretical deduction of the best filtering ratio in Rice fading channel
two important deductions about the estimated error of proposed algorithm are presented.Monte-Carlo simulation results show that compared with the existing algorithms based on logarithmic envelope (LE) and modified covariance (MCOV)
the proposed algorithm improves estimation performance by 2~5dB under the typical urban environment and low signal-noise-ratio (SNR0dB) conditions.Therefore
proposed algorithm can ensure an accurate estimation of maximum Doppler shift and the receiving performance of mobile communication systems.
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