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Performance analysis of multiple antenna systems with VQ-based feedback

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2 Author(s)
Roh, J.C. ; Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA ; Rao, B.D.

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.

Published in:

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on  (Volume:2 )

Date of Conference:

7-10 Nov. 2004