Capacity limits of MIMO channels with co-channel interference

MW Webb, MA Beach, AR Nix

Research output: Contribution to journalArticle (Academic Journal)peer-review

13 Citations (Scopus)
303 Downloads (Pure)


We consider both analytically and via Monte Carlo simulation the variation of the information theoretic capacity of multiple-input, multiple output (MIMO) communication systems. We present a way of explicitly examining the effect of interference on the MIMO sub-channel gains. Using this, we derive asymptotic lower bounds on capacity with many interferers and in high interference-to-noise ratio and present simulation results for them. We also study the behaviour of the capacity as a function of the number of interferers, the interference-to-noise ratio (INR) and the transmit and receive array sizes. It is found that, in interference, the benefit of providing multiple transmit antennas is very small indeed from a capacity perspective, whilst the number of receive antennas is critical both to the capacity and the number of users the system can mitigate interference from. Unusually, it is seen that, with a modification of the MIMO channel matrix to incorporate interference, higher correlation in the channel yields higher capacity rather than the more familiar desire for decorrelated channels
Translated title of the contributionCapacity limits of MIMO channels with co-channel interference
Original languageEnglish
Pages (from-to)703 - 707
Number of pages4
JournalIEEE 59th Vehicular Technology Conference, 2004 (VTC 2004-Spring)
Publication statusPublished - 17 May 2004
Event59th Vehicular Technology Conference 2004 (VTC 2004-Spring) - Milan, Italy
Duration: 1 May 2004 → …

Bibliographical note

Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Name and Venue of Conference: Vehicular Technology Conference 2004 (VTC 2004-Spring)
Conference Organiser: Institute of Electrical and Electronics Engineers (IEEE)
Rose publication type: Conference contribution

Sponsorship: The authors wish to thank UK EPSRC and Philips Research Laboratories (PRL) for supporting this work

Terms of use: Copyright © 2004 IEEE. Reprinted from Proceedings of IEEE 59th Vehicular Technology Conference. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to

Contributor (Other): Institute of Electrical and Electronics Engineers (IEEE)


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