{"title":"Adaptive cancellation of adjacent channel interference","authors":"Brad A R Hedstrom, Lynn Kirh, Peter F Driessen","doi":"10.1109/PACRIM.1989.48430","DOIUrl":null,"url":null,"abstract":"A new method to combat the adjacent channel interference (ACI) encountered with multichannel receivers is presented. In the case of a two-channel receiver, components of the desired signal may become present in the reference to the interference rendering traditional adaptive noise cancellation ineffective. This situation is similar to two-microphone systems used for speech enhancement. The crosstalk resistant adaptive noise canceller (CTRANC), designed to work in the two-microphone case, is unable to provide any signal improvement for the ACI model. A new system is proposed which uses a priori knowledge of the crosstalk gained by the injection of a known signal into either the input of the receiver or into the output of a transmitter, whichever is appropriate. This injection system is then compared with the CTRANC and other methods by means of extensive computer simulation.<<ETX>>","PeriodicalId":256287,"journal":{"name":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","volume":"16 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1989-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Proceeding IEEE Pacific Rim Conference on Communications, Computers and Signal Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PACRIM.1989.48430","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A new method to combat the adjacent channel interference (ACI) encountered with multichannel receivers is presented. In the case of a two-channel receiver, components of the desired signal may become present in the reference to the interference rendering traditional adaptive noise cancellation ineffective. This situation is similar to two-microphone systems used for speech enhancement. The crosstalk resistant adaptive noise canceller (CTRANC), designed to work in the two-microphone case, is unable to provide any signal improvement for the ACI model. A new system is proposed which uses a priori knowledge of the crosstalk gained by the injection of a known signal into either the input of the receiver or into the output of a transmitter, whichever is appropriate. This injection system is then compared with the CTRANC and other methods by means of extensive computer simulation.<>
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