METHOD AND APPARATUS IN A COMMUNICATION SYSTEM FOR RECEIVING A DISTORTED SIGNAL

摘要

A method is described for receiving a distorted frequency modulated (FM) signal from a portable transceiver (122) with minimum splatter and for recovering the same with a conventional FM receiver (304) of the base station (116) to obtain data having minimum intersymbol interference using an equalization filter function (306). The method utilizes an optimized prototype pulse which has been predistorted to match the inverse characteristics of the pre-modulation low pass filter (210) of the FM transmitter portion (212) of the portable transceiver (122). When the distorted FM signal is received the equalization filter function (306) processes the distorted FM signal thereby producing electric pulse signals exhibiting minimal intersymbol interference. The electric pulse signals are converted to a sequence of digital data symbols by a clock recovery element (306).