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公开(公告)号：EP1041756A2
公开(公告)日：2000-10-04
申请号：EP00302601.0
申请日：2000-03-29
IPC分类号： H04H1/00
CPC分类号： H04H20/30 , H04H60/07 , H04H2201/183 , H04H2201/186 , H04L5/023
摘要： Methods and apparatus for processing information, e.g., audio, speech, video or image information, for transmission in a communication system. In an illustrative embodiment, a set of bit streams are generated from an audio information signal. The set of bit streams may be, e.g., a total of four bit streams generated by separating each of two multiple description bit streams, corresponding to separate representations of the audio information signal, into first and second class bit streams. The first and second class bit streams associated with the first multiple description bit stream may then be transmitted in respective first and second subbands of a first sideband of an FM host carrier, while the first and second class bit streams associated with the second multiple description bit stream are transmitted in respective first and second subbands of a second sideband of the FM host carrier. The first class bit streams may be provided with a different level of error protection than the second class bit streams, e.g., by utilizing different portions of a non-uniform power profile for the corresponding subbands, or by placement of the bit streams in subbands having different susceptibility to interference. Delay may be introduced between at least a subset of the bit streams in order to provide improved performance, e.g., in the presence of fading.
摘要翻译： 的方法和设备，用于处理信息，E. G.，音频，语音，视频或图像的信息，用于在通信系统中的传输。在说明性实施例中，一组位流被从音频信息信号中产生。 该组位流的可以是E. G.，总共由每两个多描述比特流的分离，对应于音频信息信号，的表示分离成第一和第二类比特流生成4个比特流。 然后与第一多描述比特流相关联的第一和第二类比特流可以是在FM主载波的第一边带的respectivement第一和第二子带反mitted，而与第二多描述比特相关联的第一和第二类的比特流 流是在FM主载波的第二边带的respectivement第一和第二子带反mitted。 第一类比特流可以通过利用为相应的子带的非均匀功率分布的不同部分被提供有不同电平的差错保护比第二类比特流，例如，或通过在具有子带的比特流的位置 不同的易受干扰。 延迟可能至少比特流的子集之间，以提供改进的性能，E. G.，在衰落的存在而引入。
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公开(公告)号：EP1041756B1
公开(公告)日：2007-03-07
申请号：EP00302601.0
申请日：2000-03-29
CPC分类号： H04H20/30 , H04H60/07 , H04H2201/183 , H04H2201/186 , H04L5/023
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公开(公告)号：EP1041756A3
公开(公告)日：2003-02-12
申请号：EP00302601.0
申请日：2000-03-29
CPC分类号： H04H20/30 , H04H60/07 , H04H2201/183 , H04H2201/186 , H04L5/023
摘要： Methods and apparatus for processing information, e.g., audio, speech, video or image information, for transmission in a communication system. In an illustrative embodiment, a set of bit streams are generated from an audio information signal. The set of bit streams may be, e.g., a total of four bit streams generated by separating each of two multiple description bit streams, corresponding to separate representations of the audio information signal, into first and second class bit streams. The first and second class bit streams associated with the first multiple description bit stream may then be transmitted in respective first and second subbands of a first sideband of an FM host carrier, while the first and second class bit streams associated with the second multiple description bit stream are transmitted in respective first and second subbands of a second sideband of the FM host carrier. The first class bit streams may be provided with a different level of error protection than the second class bit streams, e.g., by utilizing different portions of a non-uniform power profile for the corresponding subbands, or by placement of the bit streams in subbands having different susceptibility to interference. Delay may be introduced between at least a subset of the bit streams in order to provide improved performance, e.g., in the presence of fading.
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