Improving convolutional and turbo code performance on the CDMA forward link

Author

Messier, Geoffrey G. ; Krzymien, Witold A.

Author_Institution

Alberta Univ., Edmonton, Alta., Canada

Volume

1

fYear

2002

fDate

2002

Firstpage

29

Abstract

This work improves turbo and convolutional channel code performance on the CDMA forward link by providing the mobile channel decoder with more accurate estimates of the signal to noise plus interference ratio (SNIR) of each received symbol. The SNIR estimates are improved by separately accounting for the in-cell interference and out-of-cell interference plus thermal noise processes at the mobile Rake receiver output. Simulations are used to illustrate that this technique significantly improves channel code performance, particularly in hotspot scenarios.

Keywords

adjacent channel interference; channel coding; cochannel interference; code division multiple access; convolutional codes; decoding; mobile radio; radio receivers; spread spectrum communication; thermal noise; turbo codes; CDMA forward link; SNIR estimates; channel code; convolutional code; in-cell interference; mobile Rake receiver output; mobile channel decoder; out-of-cell interference; performance; received symbol; signal to noise plus interference ratio; thermal noise processes; turbo code; Convolution; Convolutional codes; Delay; Fading; Fingers; Gaussian processes; Multiaccess communication; Multipath channels; RAKE receivers; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1049280

Filename

1049280