Maximizing the cutoff rate in a quantized MIMO wireless system with AGC

Boyd M. Murray*, Sam Reisenfeld

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

We investigate the effects of quantization and AGC (Automatic Gain Control) in MIMO (Multiple Input Multiple Output) wireless systems. We derive the cutoff rate equations for a deterministic MIMO channel with quantization at the receiver inputs and demonstrate by numerical simulation the dependence of the cutoff rate on the receiver AGC settings. Then we propose a fast AGC algorithm to maximize the cutoff rate for each channel realization and use it in numerical simulations to evaluate the quantized MIMO system performance in a Rayleigh channel. We find that even quite low resolution quantizers yield cutoff rates very close to those of equivalent unquantized systems when the fast AGC algorithm is applied. Results are presented for BPSK and QPSK modulations for a 2£2 MIMO configuration in deterministic and Rayleigh channels.

Original languageEnglish
Title of host publicationProceedings of the 1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2006
Place of PublicationSydney, Australia
PublisherUniversity of Technology Sydney
Pages6-10
Number of pages5
ISBN (Print)0977520005, 9780977520008
Publication statusPublished - 2006
Externally publishedYes
Event1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless - 2006 - Sydney, Australia
Duration: 13 Mar 200616 Mar 2006

Other

Other1st IEEE International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless - 2006
CountryAustralia
CitySydney
Period13/03/0616/03/06

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