Adaptive HARQ for imperfect channel knowledge

Author

Pfletschinger, Stephan ; Navarro, Monica

Author_Institution

Centre Tecnol. de Telecomunicacions de Catalunya (CTTC), Barcelona, Spain

fYear

2010

fDate

18-21 Jan. 2010

Firstpage

1

Lastpage

6

Abstract

We consider a link adaptation scheme with adaptive coding and modulation and adaptive retransmissions on a block fading channel. Therefore, we characterize the performance of the employed channel code with puncturing and repetition coding in a unified way and use this description to devise a method to adapt modulation and code rate in the initial transmission as well as in all retransmissions. We evaluate the performance of two adaptation strategies and compare them to the throughput-optimum and a simple scheme with fixed-length retransmissions.

Keywords

adaptive codes; automatic repeat request; channel coding; fading channels; modulation coding; adaptive HARQ; adaptive coding; adaptive retransmission; block fading channel; channel code; imperfect channel knowledge; link adaptation scheme; modulation; puncturing coding; repetition coding; Adaptive coding; Channel state information; Degradation; Delay; Dynamic scheduling; Fading; Feedback; Modulation coding; Radio transmitters; Redundancy;

fLanguage

English

Publisher

ieee

Conference_Titel

Source and Channel Coding (SCC), 2010 International ITG Conference on

Conference_Location

Siegen

Print_ISBN

978-1-4244-6872-0

Electronic_ISBN

978-3-8007-3211-1

Type

conf

Filename

5447142