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

Fredrik Rusek, Angel Lozano, Nihar Jindal

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

We present a method to compute, quickly and efficiently, the mutual information achieved by an IID (independent identically distributed) complex Gaussian input
on a block Rayleigh-faded channel. The method accommodates both scalar and MIMO (multiple-input multiple-output) settings.
Operationally, the mutual information thus computed represents the highest spectral efficiency that can be attained using standard Gaussian codebooks.

Examples are provided that
illustrate the loss in spectral efficiency caused by fast fading and how that loss is amplified by the use of multiple transmit antennas.
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.
Original languageEnglish
Title of host publicationIEEE International Symposium on Information Theory
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages300-304
Number of pages5
ISBN (Print)978-1-4244-6960-4
DOIs
Publication statusPublished - 2010
EventIEEE International Symposium on Information Theory (ISIT), 2010 - Austin, Texas, Austin, Texas, United States
Duration: 2010 Jun 132010 Jun 18

Conference

ConferenceIEEE International Symposium on Information Theory (ISIT), 2010
Country/TerritoryUnited States
CityAustin, Texas
Period2010/06/132010/06/18

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • wireless communications
  • MIMO
  • mutual information
  • Non coherent
  • Gaussian signaling

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