Title :
Interleaving for outer convolutional codes in DS-CDMA systems
Author :
Brück, Stefan ; Sorger, Ulrich ; Gligorevic, Snjezana ; Stolte, Norbert
Author_Institution :
Global Wireless Syst. Res., Lucent Technol. Bell Labs., Nuremberg, Germany
fDate :
7/1/2000 12:00:00 AM
Abstract :
The paper deals with coding for direct-sequence code-division multiple-access (DS-CDMA) channels. A novel method for interleaver design is introduced which significantly improves the probability of error on Gaussian multiple-access channels. It is theoretically shown for a certain kind of interleaving and finite code length that almost the complete influence of interuser interference can be eliminated. Hence, the performance of a coded DS-CDMA system comes close to transmission without interuser interference. Simulations are used to confirm the analysis
Keywords :
Gaussian channels; code division multiple access; convolutional codes; error statistics; interleaved codes; maximum likelihood decoding; maximum likelihood detection; multiuser channels; radiofrequency interference; spread spectrum communication; BPSK; DS-CDMA systems; Gaussian multiple-access channels; ML decoder; ML detector; ML receiver; coding; direct-sequence code-division multiple-access; error probability; finite code length; interleaver design; interuser interference; outer convolutional codes interleaving; simulations; Convolutional codes; Design methodology; Detectors; Error probability; Frequency; H infinity control; Interference; Interleaved codes; Iterative decoding; Multiaccess communication;
Journal_Title :
Communications, IEEE Transactions on
