{"title":"CDMA数字蜂窝语音编码器算法分析与优化","authors":"Jh Hyun Park, Young Min Kim","doi":"10.1109/ICCS.1994.474281","DOIUrl":null,"url":null,"abstract":"CELP coding is a powerful technique for the realization of high-quality speech coders operating at variable bit rates. The paper describes an implementation of a QCELP coder algorithm for CDMA. In addition, a hardware implementation for improving the speech coding rate of QCELP speech coders is explored. The coder can operate at different bit rates by simply comparing the energy in the frame with the threshold which is based upon an estimate of the background noise level. This research is based upon the design of DSP chips and ASICs for dedicated digital mobile communication applications.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"58 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Analysis and optimization of speech coder algorithm for CDMA digital cellular\",\"authors\":\"Jh Hyun Park, Young Min Kim\",\"doi\":\"10.1109/ICCS.1994.474281\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"CELP coding is a powerful technique for the realization of high-quality speech coders operating at variable bit rates. The paper describes an implementation of a QCELP coder algorithm for CDMA. In addition, a hardware implementation for improving the speech coding rate of QCELP speech coders is explored. The coder can operate at different bit rates by simply comparing the energy in the frame with the threshold which is based upon an estimate of the background noise level. This research is based upon the design of DSP chips and ASICs for dedicated digital mobile communication applications.<<ETX>>\",\"PeriodicalId\":158681,\"journal\":{\"name\":\"Proceedings of ICCS '94\",\"volume\":\"58 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-11-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of ICCS '94\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCS.1994.474281\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of ICCS '94","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCS.1994.474281","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Analysis and optimization of speech coder algorithm for CDMA digital cellular
CELP coding is a powerful technique for the realization of high-quality speech coders operating at variable bit rates. The paper describes an implementation of a QCELP coder algorithm for CDMA. In addition, a hardware implementation for improving the speech coding rate of QCELP speech coders is explored. The coder can operate at different bit rates by simply comparing the energy in the frame with the threshold which is based upon an estimate of the background noise level. This research is based upon the design of DSP chips and ASICs for dedicated digital mobile communication applications.<>
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