{"title":"模拟联合信源信道编码中功率分配的优化","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":"{\"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}","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}
Optimizing power allocation in analog joint source-channel coding
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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