Reprinted with corrections from The Bell System Technical Journal,
Vol. 27, pp. 379-423, 623-656, July, October, 1948.
A Mathematical Theory of Communication
By C. E. SHANNON
INTRODUCTION
THE recent development of various methods of modulation such as PCM and PPM which exchange bandwidth for signal-to-noise ratio has intensified the interest in a general theory of communication. A basis for such a theory is contained in the important papers of Nyquist 1 and Hartley 2 on this subject. In the present paper we will extend the theory to include a number of new factors, in particular the effect of noise in the channel, and the savings possible due to the statistical structure of the original message and due to the nature of the final destination of the information.
The fundamental problem of communication is that of reproducing at one point either exactly or ap-proximately a message selected at another point. Frequently the messages have meaning; that is they refer to or are correlated according to some system with certain physical or conceptual entities. These semantic aspects of communication are irrelevant to the engineering problem. The significant aspect is that the actual message is one selected from a set of possible messages. The system must be designed to operate for each possible selection, not just the one which will actually be chosen since this is unknown at the time of design.
基于huffman编码的txt文件压缩和解压缩程序的C语言实现
4星 · 超过85%的资源 需积分: 42 176 浏览量
2011-11-14
21:53:59
上传
评论 8
收藏 5KB RAR 举报
tllovejf99
- 粉丝: 1
- 资源: 9
最新资源
- 基于ARIMAX的多变量预测模型python源码+数据集释.zip
- 华为od-华为od练习题之矩阵乘法-题库题解.zip
- 1___UNI__C395E23__20230608193024.apk.1
- 电子通信设计资料抗干扰红外发射接收一体DXP资料及其相关资料
- 华为od-华为od练习题之成绩排序-题库题解.zip
- Python实现SSA-LSTM麻雀搜索算法优化长短期记忆神经网络时间序列预测(完整源码和数据)
- 基于python的足球运动员数据分析源码+数据集.zip
- 华为od-华为od练习题之24点游戏-题库题解.zip
- 电子通信设计资料矩阵键盘DXP资料及其相关资料
- classic-benchmarks-x86.tar.gz
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
- 1
- 2
- 3
前往页