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Sharpened capacity lower bounds of fading MIMO channels with imperfect CSI | IEEE Conference Publication | IEEE Xplore

Sharpened capacity lower bounds of fading MIMO channels with imperfect CSI


Abstract:

A well-established capacity lower bound of multiple-input multiple-output (MIMO) single-user fading channels operating with imperfect receiver-side channel-state informat...Show More

Abstract:

A well-established capacity lower bound of multiple-input multiple-output (MIMO) single-user fading channels operating with imperfect receiver-side channel-state information (CSI) is improved using a simple rate-splitting and successive-decoding scheme. The potential improvement is shown to increase with the number of allowed decoding steps (layers) to such extent that the best layering strategy is approached in the limit as the number of layers tends to infinity. We give a general analytic expression of this limit, which constitutes a new capacity lower bound that is sharper than the conventional bound. Using large random matrix theory, we derive an asymptotic approximation of this novel bound, which is shown via numerical simulation to be highly accurate over the whole range of signal-to-noise ratios.
Date of Conference: 07-12 July 2013
Date Added to IEEE Xplore: 07 October 2013
Electronic ISBN:978-1-4799-0446-4

ISSN Information:

Conference Location: Istanbul, Turkey

References

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