Performance of a OFDM-CDMA system with orthogonal convolutional coding and interference cancellation

Author

Stirling-Gallacher, R.A. ; Povey, G.J.R.

Author_Institution

Dept. of Electr. Eng., Edinburgh Univ., UK

Volume

2

fYear

1997

fDate

4-7 May 1997

Firstpage

860

Abstract

The performance of an OFDM-CDMA system with convolutional coding and interference cancellation is presented. The OFDM-CDMA receiver uses equal gain combining on the carriers before the received signal is passed to the interference canceller. Within the interference canceller, the interference estimates are improved by Viterbi decoding before being subtracted from the wanted signal. Both orthogonal and super orthogonal coding are considered and their performance is compared against a 3/4 rate K=7 punctured convolutional code. A comparison is made of the spectral efficiencies of the different schemes

Keywords

Viterbi decoding; channel coding; convolutional codes; frequency division multiplexing; interference suppression; radio receivers; telecommunication channels; OFDM-CDMA receiver; OFDM-CDMA system; Viterbi decoding; carriers; channel coding; code rate; equal gain combining; interference cancellation; interference estimates; orthogonal convolutional coding; punctured convolutional code; received signal; super orthogonal coding; system performance; Bandwidth; Channel coding; Convolution; Convolutional codes; Decoding; Diversity reception; Interference cancellation; Multiaccess communication; OFDM; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.600451

Filename

600451