초록 ▼

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 str

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.

대표청구항 ▼

[ We claim:] [1.] A method for mitigating distortion effects to enhance signal usability determination, the method comprising the steps of:receiving a stream of information symbols to produce a symbol stream, each information symbol of the symbol stream including a desired component and an undesired

[ We claim:] [1.] A method for mitigating distortion effects to enhance signal usability determination, the method comprising the steps of:receiving a stream of information symbols to produce a symbol stream, each information symbol of the symbol stream including a desired component and an undesired component, the undesired component of each information symbol including distortion;estimating the desired component of a first information symbol of the symbol stream to produce a desired component estimate, wherein the first information symbol is an information symbol received in a first radio subchannel of a plurality of radio subchannels;estimating the undesired component of the first information symbol based on the first information symbol and the desired component estimate to produce an undesired component estimate;scaling the undesired component estimate by a scaling factor that is based on the desired component estimate and a second information symbol of the symbol stream to produce a scaled undesired component estimate, wherein the second information symbol is an information symbol received in a second radio subchannel of the plurality of radio subchannels; anddetermining an indicia of symbol stream usability based on the scaled undesired component estimate.