{"title":"Optimizing power allocation in analog joint source-channel coding","authors":"Yichuan Hu, J. Garcia-Frías","doi":"10.1109/CISS.2009.5054693","DOIUrl":null,"url":null,"abstract":"We propose an analog joint source-channel coding scheme for the transmission of analog Gaussian sources over AWGN channels. The key idea is the combination of a 1:1 uncoded system in which source symbols are directly sent through the noisy channel and a 2:1 non-linear system in which two source outputs are mapped to one channel symbol using spacefilling curves. By doing so, the proposed scheme can achieve any bandwidth reduction ratio between 1:1 and 2:1. The main contribution of this paper is the derivation of the optimal power allocation between the two constituent systems in order to maximize the overall signal-to-distortion ratio (SDR).","PeriodicalId":433796,"journal":{"name":"2009 43rd Annual Conference on Information Sciences and Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 43rd Annual Conference on Information Sciences and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CISS.2009.5054693","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
We propose an analog joint source-channel coding scheme for the transmission of analog Gaussian sources over AWGN channels. The key idea is the combination of a 1:1 uncoded system in which source symbols are directly sent through the noisy channel and a 2:1 non-linear system in which two source outputs are mapped to one channel symbol using spacefilling curves. By doing so, the proposed scheme can achieve any bandwidth reduction ratio between 1:1 and 2:1. The main contribution of this paper is the derivation of the optimal power allocation between the two constituent systems in order to maximize the overall signal-to-distortion ratio (SDR).
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