Pulse or digital communications – Transceivers – Modems
Patent
1997-05-27
1999-07-06
Bocure, Tesfaldet
Pulse or digital communications
Transceivers
Modems
375229, H04L 514
Patent
active
059205938
ABSTRACT:
A device useful in personal digital cellular (PDC) mobile telecommunications. The device is formed of an application specific integrated circuit (ASIC) chip and a digital signal processor (DSP) chip. The ASIC at least converts between digital modulated signals and analog ones. The DSP chip at least digitally modulates and demodulates the digital modulated and demodulated signals, digitally processes the demodulated signals to and from speech and control channel signals and performs vector sum excited linear prediction (VSELP) compression and decompression.
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Principles of Digital Communication and Coding, by Andrew J. Viterbi and Jim Kay Omura, McGraw Hill, Tokyo, 1979, pp. 227-253.
Theory and Practice of Error Control Codes, Richard E. Blahut, Addison-Wesley, Massachusetts, 1983, pp. 130-141.
Elazar Ofer
Leshets Yona
Paiss Omry
Perl Joseph
Rainish Doran
Bocure Tesfaldet
DSP Telecommunications Ltd.
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