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1. (WO1999008456) COMMUNICATION SYSTEM UTILIZING HOST SIGNAL PROCESSING

Pub. No.:    WO/1999/008456    International Application No.:    PCT/IL1998/000368
Publication Date: Fri Feb 19 00:59:59 CET 1999 International Filing Date: Fri Aug 07 01:59:59 CEST 1998
IPC: H04B 1/38
H04W 88/02
Applicants: COMSYS COMMUNICATION & SIGNAL PROCESSING LTD.
PLOTNIK, Eli
SHABTAI, Ophir
Inventors: PLOTNIK, Eli
SHABTAI, Ophir
Title: COMMUNICATION SYSTEM UTILIZING HOST SIGNAL PROCESSING
Abstract:
A communications system utilizing host signal processing techniques particularly applicable to cellular communication system devices that are integrated with a system that incorporates a general purpose CPU running a multitasking operating system, e.g., a portable or handheld computer. The cellular communication system includes a cellular modem, cellular control/protocol function and an RF module (234). Additional components include a voice codec, analog modem and optional speaker phone. Conventional cellular communication systems typically utilize a dedicated DSP processor, a controller, memory devices and analog circuitry to implement cellular system functionality. Some of the processing tasks that are adapted to execute on the host CPU (237) include the modem voice codec and cellular protocol.