Multi-Antenna Limited Feedback for Temporally-Correlated Channels: Feedback Compression


K. Huang, B. Mondal, Robert W. Heath Jr, and J. G. Andrews


Proc. of IEEE Global Telecommunications Conference, San Francisco, CA, Dec. 2006 (Note: Best student paper in the category of Communication Systems)


A novel method is proposed for reducing the feedback rate of a transmit beamforming system with feedback of quantized channel state information. Specifically, the channel is modeled as a Markov chain and the feedback bits are compressed by truncating the Markov chain transition probabilities. Using the proposed method, the feedback rate can be compressed by more than 100\% without degrading the system performance.

Preprint: [PDF].