Title :
Vector quantization over a CDMA channel using soft multiuser decoding
Author :
Skoglund, Mikael ; Ottosson, Tony
Author_Institution :
Dept. of Inf. Theory, Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
The optimal soft decoder for vector quantization over a CDMA channel is presented. It utilizes a-priori source information and channel characteristics to combat channel noise and multiuser interference. Versions of the optimal decoder with lower complexity are also considered. Simulations demonstrate that the soft decoder outperforms the scheme that uses ML-detection plus table look-up VQ decoding
Keywords :
channel coding; code division multiple access; computational complexity; decoding; interference suppression; pseudonoise codes; radiofrequency interference; source coding; spread spectrum communication; telecommunication channels; vector quantisation; CDMA channel; a-priori source information; channel characteristics; channel noise; complexity; multiuser interference; soft multiuser decoding; vector quantization; Code division multiaccess; Complexity theory; Decoding; Electromagnetic radiative interference; Interference suppression; Multiuser channels; Pseudonoise coded communication; Source coding; Vector quantization;
Conference_Titel :
Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/CTMC.1995.502943
