{"title":"一种具有低复杂度LLR架构的高吞吐量基数-4 log-MAP解码器","authors":"Hsiang-Tsung Chuang, Kai-Hsin Tseng, W. Fang","doi":"10.1109/VDAT.2009.5158137","DOIUrl":null,"url":null,"abstract":"The throughput of turbo decoder is limited by the recursion architecture. In this paper, an improved radix-4 recursion architecture is presented. In order to decrease the critical path delay, a hybrid 4-inputs addition/subtraction structure is employed. Moreover, we present a modified trace-back architecture to decrease the hardware complexity of the log-likelihood ratios (LLR) architecture. The area of the proposed MAP decoder is 0.58 mm2 on UMC 0.13µm standard cell technology and under the worst case a maximum throughput of 600 Mbps can be achieved.","PeriodicalId":246670,"journal":{"name":"2009 International Symposium on VLSI Design, Automation and Test","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"A high-troughput radix-4 log-MAP decoder with low complexity LLR architecture\",\"authors\":\"Hsiang-Tsung Chuang, Kai-Hsin Tseng, W. Fang\",\"doi\":\"10.1109/VDAT.2009.5158137\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The throughput of turbo decoder is limited by the recursion architecture. In this paper, an improved radix-4 recursion architecture is presented. In order to decrease the critical path delay, a hybrid 4-inputs addition/subtraction structure is employed. Moreover, we present a modified trace-back architecture to decrease the hardware complexity of the log-likelihood ratios (LLR) architecture. The area of the proposed MAP decoder is 0.58 mm2 on UMC 0.13µm standard cell technology and under the worst case a maximum throughput of 600 Mbps can be achieved.\",\"PeriodicalId\":246670,\"journal\":{\"name\":\"2009 International Symposium on VLSI Design, Automation and Test\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-04-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2009 International Symposium on VLSI Design, Automation and Test\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/VDAT.2009.5158137\",\"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 International Symposium on VLSI Design, Automation and Test","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VDAT.2009.5158137","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A high-troughput radix-4 log-MAP decoder with low complexity LLR architecture
The throughput of turbo decoder is limited by the recursion architecture. In this paper, an improved radix-4 recursion architecture is presented. In order to decrease the critical path delay, a hybrid 4-inputs addition/subtraction structure is employed. Moreover, we present a modified trace-back architecture to decrease the hardware complexity of the log-likelihood ratios (LLR) architecture. The area of the proposed MAP decoder is 0.58 mm2 on UMC 0.13µm standard cell technology and under the worst case a maximum throughput of 600 Mbps can be achieved.
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