Combining adaptive modulation and coding with truncated ARQ enhances throughput

Qingwen Liu, Shengli Zhou, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We develop a cross-layer design which combines adaptive modulation and coding (AMC) at the physical layer with a truncated automatic repeat request (ARQ) protocol at the data link layer, in order to maximize spectral efficiency under prescribed delay and performance constraints. We, derive the achieved spectral efficiency in closed-form for transmissions over Nakagami-m block fading channels. Numerical results reveal that retransmissions at the data link layer alleviate stringent error-control requirements at the physical layer, and thereby enable considerable spectral efficiency gains. Diminishing returns appear on the spectral efficiency improvement as the number of retransmissions increases, which suggests that a small number of retransmissions strikes a desirable delay-throughput tradeoff.

Original languageEnglish (US)
Title of host publication2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages110-114
Number of pages5
ISBN (Electronic)078037858X
DOIs
StatePublished - Jan 1 2004
Event4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003 - Rome, Italy
Duration: Jun 15 2003Jun 18 2003

Publication series

NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Volume2004-January

Other

Other4th IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2003
CountryItaly
CityRome
Period6/15/036/18/03

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