Speech coding for source coding is the analog signal into a digital signal, and then in the channel transmission. In digital mobile communication, speech coding technology has a key role high-quality low-rate voice coding technology and high efficiency digital modulation technology, digital mobile networks for the provision of mobile networks is higher than analog system capacity. At present, the international speech coding technology, there are two research directions: reduce the encoding rate and the advancement of voice, then sound quality.

CDMA的语音编码与信道编码.doc

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