Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Patent
1996-07-26
1998-09-22
Pham, Chi H.
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
375346, 375348, 4552263, H04L 2302, H04L 512
Patent
active
058126007
ABSTRACT:
A communication system (100) employs a method and apparatus for mitigating distortion effects and enhancing signal usability determinations in a receiver (102). The receiver receives a discrete information signal that includes a stream of information symbols. Each information symbol (124) of the stream includes two components: a desired component and an undesired component that includes interference and distortion. The receiver determines an estimate (126) of the desired component of an information symbol and an estimate (130) of the undesired component of the information symbol based on the information symbol itself and its desired component estimate. The undesired component estimate is then scaled by a scaling factor (132) that is derived based on the desired component estimate. An enhanced determination of signal usability (136) for the received symbol is finally determined based on the scaled undesired component estimate (134). In this manner, the enhanced signal usability determination approaches being a function of interference only, substantially exclusive of distortion.
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Birchler Mark A.
Hess Garry C.
Marsan Mark J.
Bayard Emmanuel
Crilly Daniel C.
Motorola Inc.
Pham Chi H.
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