Title :
A scheme for the SNR estimation and its application in Doppler shift estimation of mobile communication systems
Author :
Hua Jinyu ; Han, Hua ; Qingmin, Meng ; Xiaohu, You
Author_Institution :
Nat. Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
An average SNR (signal-to-noise ratio) estimation method, based on channel power spectrum density (PSD) analysis, is proposed here. It can be implemented by FFT to reduce operations effectively. Also, we analyze the bias of Doppler shift estimation and recommend an improved estimation method based on SNR estimation. A high estimation accuracy in wide ranges of velocity and SNR is observed from simulation results.
Keywords :
Doppler shift; channel estimation; fading channels; fast Fourier transforms; mobile radio; spectral analysis; Doppler shift estimation bias; FFT implementation; SNR estimation; channel estimation frequency characteristics; channel fading rate; channel power spectrum density analysis; estimation accuracy; mobile communication systems; rapid fading channels; signal-to-noise ratio estimation; velocity range; Analytical models; Bit error rate; Channel estimation; Degradation; Doppler shift; Fading; Frequency estimation; Mobile communication; Power control; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1399909
