Abstract:
Multiple antenna wireless systems with feedback of quantized channel information, called "limited feedback” systems, are attractive choices for improving the quality of d...Show MoreMetadata
Abstract:
Multiple antenna wireless systems with feedback of quantized channel information, called "limited feedback” systems, are attractive choices for improving the quality of downlink (DL) transmission. Most work in this area use the block-fading channel model where the DL channel is assumed constant in each block and different blocks uncorrelated. In this paper, we consider limited feedback for a temporally correlated DL channel. Markov models are introduced for characterizing the temporal correlation and probability distribution of the DL channel. Using the Markov models, average feedback rates are derived. Numerical results show that the feedback rates are proportional to the Doppler frequency.
Published in: 2006 IEEE International Conference on Acoustics Speech and Signal Processing Proceedings
Date of Conference: 14-19 May 2006
Date Added to IEEE Xplore: 18 September 2006
Print ISBN:1-4244-0469-X