| Paper: | SPCOM-L1.3 | ||
| Session: | MIMO Channel Modeling | ||
| Time: | Tuesday, May 16, 11:10 - 11:30 | ||
| Presentation: | Lecture | ||
| Topic: | Signal Processing for Communication: MIMO precoder/decoder design, receiver algorithms | ||
| Title: | Markov Models for Limited Feedback MIMO Systems | ||
| Authors: | Kaibin Huang, Bishwarup Mondal, Robert Heath, Jeffrey Andrews, University of Texas, Austin, United States | ||
| Abstract: | Multiple antenna wireless systems with feedback of quantized channel information, called ``limited feedback" systems, are an attractive choice for improving the quality of downlink transmission. Most works in this area use the block-fading channel model where the channel is assumed constant in each block and different blocks uncorrelated. In this paper, we consider limited feedback in a time-correlated channel. Markov models are introduced for analyzing the effect of Doppler frequency on limited feedback rate in a MIMO system with channel gain feedback or beamformer feedback. Numerical results show that the feedback frequency (and hence the rate) is proportional to the Doppler frequency. | ||
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