Discrete adaptation of type-II hybrid-ARQ in DS-CDMA

Author

Oteng-Amoako, Kingsley ; Nooshabadi, Saeid

Author_Institution

Sch. of Electr. Eng. & Telecommun., New South Wales Univ., Sydney, NSW, Australia

Volume

1

fYear

2003

fDate

21-24 Sept. 2003

Firstpage

280

Abstract

The paper presents an optimisation strategy based on discrete adaptation of the code rate given the modulation scheme in direct spread code division multiple access (DS- CDMA) communication system. The adaptive algorithm maximizes spectral efficiency across a fading channel by transmitting an optimal amount of incremental bits on each transmit attempts. The justification presented is based on a type-II hybrid-ARQ employing turbo punctured codes with multilevel signalling.

Keywords

automatic repeat request; code division multiple access; fading channels; optimisation; spread spectrum communication; telecommunication signalling; turbo codes; DS-CDMA; adaptive algorithm; automatic repeat request; direct spread code division multiple access communication system; discrete adaptation; fading channel; multilevel signalling; optimisation strategy; turbo punctured codes; type-II hybrid-ARQ; Automatic repeat request; Constellation diagram; Decoding; Diversity reception; Fading; Forward error correction; Information analysis; Modulation coding; Multiaccess communication; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. APCC 2003. The 9th Asia-Pacific Conference on

Print_ISBN

0-7803-8114-9

Type

conf

DOI

10.1109/APCC.2003.1274358

Filename

1274358