Fast and Accurate Velocity Estimation for OFDM Systems Based on Channel Frequency Response

Author

Zhou, Shu ; Zhang, Xiaoxin ; Zhao, Yuping ; Zhao, Tingting ; Korhonen, Timo O.

Author_Institution

Peking Univ., Beijing, China

fYear

2011

fDate

15-18 May 2011

Firstpage

1

Lastpage

5

Abstract

In this paper, we proposed a new velocity estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems, which is based on the variance of channel frequency response (CFR) of two adjacent OFDM symbols. The proposed algorithm can fast and accurately estimate the velocity in both Rayleigh and Rician fading channels, and is low in computational complexity and memory storage. Simulation results show that, compared with the conventional crossingbased and covariance-based velocity estimation algorithms, the proposed algorithm can reduce estimation error by nearly 20% on average.

Keywords

OFDM modulation; Rayleigh channels; Rician channels; computational complexity; frequency response; OFDM systems; Rayleigh fading channels; Rician fading channels; channel frequency response; computational complexity; estimation error; memory storage; orthogonal frequency division multiplexing; velocity estimation; Channel estimation; Doppler effect; Estimation; Fading; Mobile communication; OFDM; Rician channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4244-8332-7

Type

conf

DOI

10.1109/VETECS.2011.5956686

Filename

5956686