Title :
Space-time coding and Kalman filtering for time-selective fading channels
Author :
Liu, Zhiqiang ; Ma, Xiaoli ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
This paper proposes a novel decoding scheme for Alamouti´s (see IEEE J. Select. Areas Commun., vol.16, p.1451-1458, 1998) space-time (ST) coded transmissions over time-selective fading channels that arise due to Doppler shifts and carrier frequency offsets. Modeling the time-selective channels as random processes, we employ Kalman filtering for channel tracking in order to enable ST decoding with diversity gains. Computer simulations confirm that the proposed scheme exhibits robustness to time-selectivity with a few training symbols
Keywords :
Doppler shift; Kalman filters; autoregressive processes; decoding; diversity reception; encoding; fading channels; filtering theory; random processes; tracking filters; AR processes; Doppler shifts; Kalman filtering; carrier frequency offsets; channel tracking; computer simulations; decoding; diversity gains; joint iterative channel tracking; random processes; space-time coded transmissions; space-time coding; symbol recovery; time-selective fading channels; training symbols; Computer simulation; Decoding; Diversity methods; Doppler shift; Fading; Filtering; Frequency; Kalman filters; Random processes; Robustness;
Journal_Title :
Communications, IEEE Transactions on
