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    • 6. 发明授权
    • Multiple description coding communication system
    • 多描述编码通信系统
    • US08594205B2
    • 2013-11-26
    • US11869443
    • 2007-10-09
    • Hamid JafarkhaniMichael T. OrchardAmy R. ReibmanYao Wang
    • Hamid JafarkhaniMichael T. OrchardAmy R. ReibmanYao Wang
    • H04B14/06
    • H03M7/40H04N19/39H04N19/61
    • A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.
    • 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量,每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量,并对每个量化的随机变量进行熵编码,分别创建编码比特流。 编码的比特流由解码器接收,该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码,反相量化和反转换。 逆变换根据哪个通道工作,即第一,第二或两个通道是否工作,执行三种不同的变换。