RCPT hybrid ARQ with limited number of retransmissions in DS-CDMA mobile radio

Author

Garg, D. ; Kimura, R. ; Adachi, F.

Author_Institution

Dept. of Electr. & Commun. Eng., Tohoku Univ., Japan

Volume

39

Issue

2

fYear

2003

fDate

1/23/2003 12:00:00 AM

Firstpage

241

Lastpage

242

Abstract

The effect of a limited number of retransmissions is investigated for RCPT coded type I and II hybrid ARQ schemes in a DS-CDMA mobile radio. It is found by computer simulations that the type II scheme with minimum amount of parity bits transmitted in each retransmission gives the highest throughput. However, if the signal energy is to be kept at its lowest, the best scheme depends on the maximum number of transmissions allowed: the type I scheme is the best for delay sensitive real-time applications and type II is suitable for delay tolerant applications like packet data communications.

Keywords

Rayleigh channels; automatic repeat request; code division multiple access; data communication; error statistics; matrix algebra; mobile radio; spread spectrum communication; turbo codes; DS-CDMA mobile radio; RCPT hybrid ARQ; computer simulations; delay sensitive real-time applications; delay tolerant applications; frequency selective Rayleigh fading channel; packet data communications; parity bits; puncturing matrices; rate compatible punctured turbo; retransmissions; throughput; type I scheme; type II scheme;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20030177

Filename

1179543