Title :
Analysis and modification for a Doppler shift estimator based on the envelope rate of minimum in wireless communications
Author :
Hua, Jingyu ; Meng, Limin ; Xu, Zhijiang ; Wang, Dongming
Author_Institution :
Coll. of Inf. Eng., Zhejiang Univ. of Tech., Hangzhou
Abstract :
In this paper, the Doppler shift of the time-varying multi-path channel is estimated by calculating the rate of minimum (ROM) of the signal envelope of the channel coefficient estimates at the strongest path. Then followed by an analysis of the effect of noise, we proposed a modification to make the estimation performance robust to signal-to-noise ratio (SNR), and simulations show a great performance improvement in a wide range of velocities and SNRs.
Keywords :
Doppler shift; channel estimation; multipath channels; time-varying channels; wireless channels; Doppler shift estimator; signal envelope calculation; time-varying multipath channel estimation; wireless communication; AWGN; Bit error rate; Doppler shift; Fading; Gaussian noise; Mobile communication; Rayleigh channels; Read only memory; Signal to noise ratio; Wireless communication;
Conference_Titel :
Communications and Networking in China, 2008. ChinaCom 2008. Third International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2373-6
Electronic_ISBN :
978-1-4244-2374-3
DOI :
10.1109/CHINACOM.2008.4685025
