Title :
Determination of optimum reconstruction levels for embedded decoders
Author :
Lockhart, G.B. ; Zhang, S.D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Leeds Univ.
fDate :
10/13/1994 12:00:00 AM
Abstract :
An iterative technique is described for computing optimum decoder reconstruction levels from input statistics given from I to R received bits per sample of the output of an R-bit per sample linear PCM encoder. Simulation of a DPCM embedded coding scheme with speech input shows that significant SNR gains are possible by using optimum reconstruction levels for decoding the supplementary bit stream
Keywords :
decoding; iterative methods; pulse-code modulation; speech coding; DPCM embedded coding; SNR; bit stream; embedded decoders; iterative technique; linear PCM encoder; optimum reconstruction levels; simulation; speech input; statistics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19941225
