Title :
Optimal partial feedback design for MIMO block fading channels with feedback capacity constraint
Author :
Lau, Vincent K N ; Liu, Youjian ; Chen, Tai-Ann
Author_Institution :
Lucent Technol. Bell Labs., USA
fDate :
29 June-4 July 2003
Abstract :
In this paper, we focus in investigating the optimal MIMO transmission and the optimal feedback strategies for MIMO link capacity when the feedback link is causal and has a capacity constraint. We show that the design of the optimal feedback scheme is identical to the design of vector quantizer (Lloyd´s algorithm) with a modified distortion measure. In the general case, the optimal feedback strategy has a general form of power water-filling cascaded with beamforming matrix as well.
Keywords :
MIMO systems; antenna arrays; array signal processing; channel capacity; distortion measurement; fading channels; vector quantisation; Lloyd´s algorithm; MIMO link capacity; MIMO transmission; beamforming matrix; block fading channel; distortion measurement; feedback capacity constraint; feedback link; optimal partial feedback design; power water-filling; vector quantizer; Algorithm design and analysis; Antenna measurements; Channel capacity; Design engineering; Distortion measurement; Fading; MIMO; Receiving antennas; State feedback; Transmitters;
Conference_Titel :
Information Theory, 2003. Proceedings. IEEE International Symposium on
Print_ISBN :
0-7803-7728-1
DOI :
10.1109/ISIT.2003.1228079
