Title :
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
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;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.600451
