Title :
Asymptotic capacity of beamforming with limited feedback
Author :
Santipach, Wiroonsak ; Honig, Michael L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Northwestern Univ., Evanston, IL, USA
fDate :
27 June-2 July 2004
Abstract :
We study the capacity of a single-user channel with multiple antennas and limited feedback. The receiver has perfect channel knowledge, and can relay B bits, which specify a beamforming vector, to the transmitter. We show that a random vector quantization scheme is asymptotically optimal, and give a simple expression for the associated capacity.
Keywords :
Rayleigh channels; antenna arrays; channel capacity; receiving antennas; transmitting antennas; beamforming vector; multiple antennas; perfect channel knowledge; random vector quantization scheme; single-user channel capacity; Antenna feeds; Array signal processing; Covariance matrix; Fading; Feedback; Mutual information; Receiving antennas; Relays; Transmitters; Vector quantization;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365326
