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发布时间: 2011-09-15
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通信的数学理论(英文版)各名校经典教材INTRODUCTIONTHE recent development of various methods of modulation such as PCM and PPM which exchangebandwidth for signal-to-noise ratio has intensified the interest in a general theory of communication. Abasis for such a theory is contained in the important papers of Nyquist1 and Hartley2 on this subject. In thepresent paper we will extend the theory to include a number of new factors, in particular the effect of noisein the channel, and the savings possible due to the stati


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