Title :
Channel optimization of predictive VQ for spectrum coding
Author :
Lindén, Jan ; Skoglund, Jan
Author_Institution :
Dept. of Inf. Theory, Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
In this paper, design algorithms for channel optimized predictive vector quantizers are presented. Traditional methods for memoryless quantizers can be applied directly to the prediction error codebook. However, the predictor must be redesigned to obtain good performance. We present a new and more general method that simultaneously optimizes the predictor and the codebook. We also show that this design method can be used to obtain index assignments for standard vector quantizers that are advantageous to what is obtained by post process index assignment algorithms
Keywords :
channel coding; iterative methods; memoryless systems; optimisation; prediction theory; spectral analysis; speech coding; vector quantisation; channel optimization; design algorithms; design method; index assignments; memoryless quantizers; performance; post process index assignment algorithms; prediction error codebook; predictive VQ; spectrum coding; speech coding; vector quantizers; Algorithm design and analysis; Books; Computer errors; Design methodology; Design optimization; Distortion measurement; Euclidean distance; Information theory; Iterative methods; Optimization methods;
Conference_Titel :
Speech Coding For Telecommunications Proceeding, 1997, 1997 IEEE Workshop on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-4073-6
DOI :
10.1109/SCFT.1997.623912