Title :
Adaptive MIMO channel estimation for fast Rayleigh fading channels
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A novel adaptive channel estimation algorithm for fast fading channels is proposed. The algorithm is based on an adaptive multi-rate filter bank structure. Unlike conventional MIMO systems, where a block fading channel model is typically assumed, a continuous fading model is considered in order to deal with fast fading in MIMO systems. In addition to that, the channel estimator is designed to be adaptive to time-varying Doppler frequency. Simulation results compare the proposed algorithm with an adaptive Wiener (MMSE) channel estimator.
Keywords :
Doppler effect; Rayleigh channels; Wiener filters; adaptive estimation; adaptive filters; channel bank filters; channel estimation; mobile radio; MMSE channel estimator; Rayleigh fading channels; adaptive MIMO channel estimation; adaptive Wiener channel estimator; adaptive Wiener filter; adaptive estimation; adaptive filter; adaptive multi-rate filter bank structure; block fading channel model; continuous fading model; fast fading channels; mobile station; time-varying Doppler frequency; Channel estimation; Detectors; Fading; Filter bank; Frequency estimation; MIMO; Maximum likelihood decoding; Receiving antennas; Transmitting antennas; Wiener filter;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400304
