Title :
Doppler Shift Estimation for Low Signal-Noise-Ratio Environment in Mobile Communication Systems
Author :
Hua, Jingyu ; Bao, Junhua ; Xu, Zhijiang ; Meng, Limin ; Li, Gang
Author_Institution :
Coll. of Inf. Eng., Zhejiang Univ. of Technol., Hangzhou
Abstract :
A novel iterative Doppler shift estimator is proposed in this letter for the Doppler shift estimation in very low signal- noise-ratio (SNR) environment. The proposed method exploits the logarithm envelope (LE) of the mobile propagation channel, and iteratively finds the minimum mean square error (MMSE) estimation of the Doppler shift. Extensive simulation results conducted under a wide range of the noise corruption clearly show that our proposed Doppler shift estimation method substantially outperforms all existing estimators.
Keywords :
Doppler shift; iterative methods; least mean squares methods; mobile communication; iterative Doppler shift estimation; logarithm envelope; minimum mean square error estimation; mobile communication; mobile propagation channel; AWGN; Additive white noise; Doppler shift; Estimation error; Maximum likelihood estimation; Mean square error methods; Mobile communication; Signal to noise ratio; Working environment noise; Yield estimation;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.452
