Simple and Efficient Techniques to Implement a Self-Reconfigurable ARQSystem in a Slowly Varying Mobile Radio Environment

Authors:
A. Annamalai;Vijay K. Bhargava
Affiliations:
Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, STN CSC Victoria, BC V8W 3P6 Canada;Department of Electrical and Computer Engineering, University of Victoria, P.O. Box 3055, STN CSC Victoria, BC V8W 3P6 Canada E-mail: bhargava@ece.uvic.ca
Venue:
Wireless Personal Communications: An International Journal
Year:
2000

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Abstract

Four simple algorithms to track the slowly varying channel state conditionsin a mobile radio environment are examined. These indirect channel stateestimators can be used for link adaptation in two-way radio communications.As an application background, the performance of stop-and-wait andselective-repeat automatic repeat-request schemes with adaptive packet lengthare investigated. Numerical results reveal that the proposed slidingobservation interval algorithm with weighted success and error errors canprovide a reliable channel state information within only a few blocktransmissions, and require the shortest observation interval among the fourschemes.