Mutual Information of IID complex Gaussian signals on block Rayleigh-faded channels

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RECERCAT Home > Universitat Pompeu Fabra > Articles, congressos, llibres > View document

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Title:	Mutual Information of IID complex Gaussian signals on block Rayleigh-faded channels
Author:	Rusek, Fredrik; Lozano Solsona, Àngel; Jindal, Nihar
Other authors:	Universitat Pompeu Fabra
Abstract:	We present a method to compute, quickly and efficiently, the mutual information achieved by an IID (independent identically distributed) complex Gaussian signal on a block Rayleigh-faded channel without side information at the receiver. The method accommodates both scalar and MIMO (multiple-input multiple-output) settings. Operationally, this mutual information represents the highest spectral efficiency that can be attained using Gaussiancodebooks. Examples are provided that illustrate the loss in spectral efficiency caused by fast fading and how that loss is amplified when multiple transmit antennas are used. These examples are further enriched by comparisons with the channel capacity under perfect channel-state information at the receiver, and with the spectral efficiency attained by pilot-based transmission.
Abstract:	Lozano's work is supported by the Spanish Ministry of Scienceand Innovation (Refs. TEC2009-13000 and CONSOLIDER-INGENIOCSD2008-00010 ”COMONSENS”) and by AGAUR (Catalan Agency forAdministration of University and Research Grants).
Publication date:	2013-07-02
Subject(s):	-Ràdio -- Antenes -Comunicació sense fil, Sistemes de -Tractament del senyal -Wireless communications -Mutual information -MIMO -Multiantenna -Non-coherent -Spectral efficiency
Rights:	© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The final published version is available at http://dx.doi.org/10.1109/ISIT.2010.5513329
Document type:	Conference Object Article - Accepted version
Published by:	Institute of Electrical and Electronics Engineers (IEEE)
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