Method and apparatus for multiplexed vector quantization

Details Method and apparatus for multiplexed vector quantization Method and apparatus for multiplexed vector quantization

1988-10-25

1990-05-01

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375122, 358133, H04B 110, H04B 1404

Patent

active

049225081

ABSTRACT:
A vector quantization method and apparatus utilizes a plurality of codebooks each of which has a predetermined number of candidate vectors. A distortion between each input vector and an averaged vector of a set of candidate vectors, each selected from one of the codebooks, is calculated for all combinations of candidate vectors, and a combination of candidate vectors which provides the smallest distortion is determined. Codes representing the candidate vectors thus determined are multiplexed, thereafter being outputted.

REFERENCES:
patent: 4541012 (1985-09-01), Tescher
patent: 4724535 (1988-02-01), Ono
patent: 4772946 (1988-09-01), Hammer
patent: 4791654 (1988-12-01), DeMarca et al.
patent: 4797739 (1989-01-01), Tanaka
patent: 4805193 (1989-02-01), McLaughlin et al.
patent: 4811398 (1989-03-01), Copperi et al.

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