Transmitter and receiver employing variable rate encoding method

Details Transmitter and receiver employing variable rate encoding method Transmitter and receiver employing variable rate encoding method

1991-09-18

1993-08-31

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 79, 370 82, H04J 326

Patent

active

052415350

ABSTRACT:
As an encoded signal for transmission to a packet communication network or an ATM communication network, signals of a plurality of frequency subbands are independently encoded in units of frames, and an encoded bit rate is controlled in that frame unit. The deterioration of quality due to cell discarding is light, and an improvement in encoding efficiency can be expected through the joint use of entropy coding processing.

REFERENCES:
patent: 4100377 (1978-07-01), Flanagan
D. Goodman, "Embedded DPCM for Variable Bit Rate Transmission,"IEEE Transactions on Communications, vol. COM-28, No. 7, Jul. 1980, pp. 1040-1046.
N. S. Jayant and P. Noll, "Digital Coding of Waveforms", Chapter 11, Prentice-Hall, Inc., pp. 486-509.
L. R. Rabiner and R. W. Shater, "Digital Signal Processing of Speech" Corona Publishing Co., Ltd.
CCITT SGXVIII "Annex to Question X/XV (Speech Packetization) Algorithm and Protocol for Speech Packetization," TD131, Geneva Jun. 6-17, 1988.

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