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Forastronglyvaryingtransmissionenviron ment,anadaptivemulti rate(AMR)speechcodec hasbeenadoptedforsourcecodingonVHF mobile radiosystem,justasin3GPPsystem.TheAMRen codedbitsofthespeechcoderarecomposedofbits withvaryingimportanceforthereconstructionof originalspeech.Duetothedifferenceofeachbitson sourcesignificantinformation,unequalerrorprotec tion(UEP)adoptedinthechannelprotectionof speechcoderhasbeenextensivelystudied[1,2].Theapplicationofrate compatiblepunctured convolutional(RCPC)for… 相似文献
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