CUED Publications database

Outage exponents of block-fading channels with power allocation

Nguyen, KD and Guillén I Fàbregas, A and Rasmussen, LK (2010) Outage exponents of block-fading channels with power allocation. IEEE Transactions on Information Theory, 56. pp. 2373-2381. ISSN 0018-9448

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Abstract

Power allocation is studied for fixed-rate transmission over block-fading channels with arbitrary continuous fading distributions and perfect transmitter and receiver channel state information. Both short- and long-term power constraints for arbitrary input distributions are considered. Optimal power allocation schemes are shown to be direct applications of previous results in the literature. It is shown that the short- and long-term outage exponents for arbitrary input distributions are related through a simple formula. The formula is useful to predict when the delay-limited capacity is positive. Furthermore, this characterization is useful for the design of efficient coding schemes for this relevant channel model. © 2010 IEEE.

Item Type: Article
Uncontrolled Keywords: Block-fading Coded modulation Delay-limited capacity Outage diversity Outage probability Power allocation
Subjects: UNSPECIFIED
Divisions: Div F > Signal Processing and Communications
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:00
Last Modified: 08 Dec 2014 02:40
DOI: 10.1109/TIT.2010.2043768