Title :
Performance analysis of multiple antenna systems with VQ-based feedback
Author :
Roh, J.C. ; Rao, B.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
We investigate vector quantization (VQ) methods for feeding back the channel information through a low-rate feedback channel in the context of multiple-antenna MISO systems. The performance of systems with VQ-based quantized beamforming is analyzed for the independent Rayleigh fading case. This requires finding the density of the squared inner-product between the optimum and the quantized beamforming vector, which is obtained by considering a simple approximation of the quantization cell. The approximate density function is used to lower bound the capacity loss due to quantization, the outage probability and the bit error probability.
Keywords :
Rayleigh channels; antenna arrays; approximation theory; diversity reception; error statistics; feedback; vector quantisation; MISO systems; Rayleigh fading case; VQ-based feedback; approximate density function; bit error probability; channel information; multiple antenna systems; outage probability; quantized beamforming; simple approximation; vector quantization; Antenna feeds; Array signal processing; Capacity planning; Density functional theory; Feedback; Performance analysis; Rayleigh channels; Transmitters; Transmitting antennas; Vector quantization;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399510
