| Shannon限、时频不确定性和LDPC码 |
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| 引用本文： | 洪锡光,赵于平.Shannon限、时频不确定性和LDPC码[J].中国有线电视,2006(Z3). |
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| 作者姓名： | 洪锡光 赵于平 |
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| 作者单位： | 潮州广播电视台，中国科学院大气物理所 广东 潮州521000，北京100029 |
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| 摘 要： | 从信号分析和信息处理的观点论述了Shannon限所包含的实际物理意义,指出了时频不确定性对信号在信道传输中的限制,将信源和信宿、收端和发端、编码与解码接合起来,分析了LDPC码的主要性能。
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| 关 键 词： | 信道 时频域 Shannon限 LDPC码 |
Shannon Limit,Frequency-Temporal Instability and LDPC Code |
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| HONG Xi-guang ZHAO Yu-ping.Shannon Limit,Frequency-Temporal Instability and LDPC Code[J].China Cable Television,2006(Z3). |
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| Authors: | HONG Xi-guang ZHAO Yu-ping |
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| Abstract: | From viewpoints of signal and information,we discuss and explain the actually physical meaning comprehended in Shannon limit,and point out what is the limitation of signal transmission in communication channels constrained by frequency-temporal instability,then combining information source with convergence, transmitters with receptors and coding with decoding,we also address main properties of LDPC. |
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| Keywords: | channel frequency-temporal domain shannon limit LDPC code |
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