2.1.1 物理层接口特性、数据通信模型、物理层基本概念（数据、信号、码元、信源、信道、信宿、速率、波特、带宽）（转载）

客官°小女子只卖身不卖艺 2022-12-29 00:11 72阅读 0赞

原文链接：[https://blog.csdn.net/weixin\_43914604/article/details/104679775][https_blog.csdn.net_weixin_43914604_article_details_104679775]

本博客为个人学习、研究或者欣赏用，如有侵权，请与我联系删除，谢谢

### 文章目录 ###

*   *  [0.思维导图][0.]
     *  [1.物理层接口的特性][1.]
     *  [2.典型的数据通信模型][2.]
     *  [3.三种通信方式][3.]
     *  [5.两种数据传输方式][5.]
     *  [4.数据通信相关术语][4.]
     *   *  [（1）数据、信号、信源、信宿、信道][1]
         *  [（2）码元][2]
         *  [（3）速率、波特、带宽][3]

--------------------

## 0.思维导图 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70]

## 1.物理层接口的特性 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 1]

## 2.典型的数据通信模型 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 2]

## 3.三种通信方式 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 3]

## 5.两种数据传输方式 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 4]

## 4.数据通信相关术语 ##

### （1）数据、信号、信源、信宿、信道 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 5][]

### （2）码元 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 6]

*  举个栗子  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 7]

### （3）速率、波特、带宽 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 8]

*  举个栗子加深理解

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 9][]

[https_blog.csdn.net_weixin_43914604_article_details_104679775]: https://blog.csdn.net/weixin_43914604/article/details/104679775
[0.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#0_2
[1.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#1_4
[2.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#2_6
[3.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#3_11
[5.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#5_13
[4.]: https://blog.csdn.net/weixin_43914604/article/details/104679775#4_15
[1]: https://blog.csdn.net/weixin_43914604/article/details/104679775#1_16
[2]: https://blog.csdn.net/weixin_43914604/article/details/104679775#2_20
[3]: https://blog.csdn.net/weixin_43914604/article/details/104679775#3_25
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70]: /images/20221120/874dc9a0fd724f58a6ed5fdd29103e0d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 1]: /images/20221120/d8b23cb7d6974131b7ff5f09600c8100.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 2]: /images/20221120/b76b3d07efd44aafb1cdf9db0cb803df.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 3]: /images/20221120/503adbd7dd5d49ac8057c0c5e03fc4b6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 4]: /images/20221120/44c6f837bb1d4ec592c4baf4b18393bc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 5]: /images/20221120/bb11ef5a95df46a8a9c5c75115dc9056.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 6]: /images/20221120/a7d328f712a4433b893b8414aacc19a6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 7]: /images/20221120/1e9f6c79749947829c19a2f3074b7b04.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 8]: /images/20221120/4d0595113d334e03a2acb86a94f32c7b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzkxNDYwNA_size_16_color_FFFFFF_t_70 9]: /images/20221120/15c414c147634f20aab25801deff010f.png