| 计算机串行无线通信的抗干扰研究 |
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| 引用本文： | 王真星,毛乐山. 计算机串行无线通信的抗干扰研究[J]. 计算机工程与应用, 2008, 44(35): 98-99. DOI: 10.3778/j.issn.1002-8331.2008.35.029 |
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| 作者姓名： | 王真星 毛乐山 |
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| 作者单位： | 1.上海第二工业大学 计算机系，上海 201209 2.清华大学 精密仪器与机械学系，北京100084 |
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| 基金项目： | 上海市计算机科学与技术教育高地资助项目 ， 上海第二工业大学校基金 |
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| 摘 要： | 很多嵌入式设备中的无线串行通信采用ASK调制方式。串口通信具有突发通信的特点，当发射方没有数据发射的时候，高增益接收模块会接收到很多干扰信号，干扰的存在使通信口无法判断通信数据到来的时刻。对干扰的种类进行了分析，通过在不修改原有的串行通信的基础上，添加通信同步头来实现接收同步，针对通信同步头的接收，给出了接收状态机的描述。
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| 关 键 词： | 嵌入式 串行通信 无线通信 |
| 收稿时间： | 2008-05-26 |
| 修稿时间： | 2008-8-22 |
Study on wireless serial communication based on ASK |
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| WANG Zhen-xing,MAO Le-shan. Study on wireless serial communication based on ASK[J]. Computer Engineering and Applications, 2008, 44(35): 98-99. DOI: 10.3778/j.issn.1002-8331.2008.35.029 |
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| Authors: | WANG Zhen-xing MAO Le-shan |
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| Affiliation: | 1.Department of Computer Science，Shanghai Second Polytechnic University，Shanghai 201209，China 2.Department of Precision Instruments，Tsinghua University，Beijing 100084，China |
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| Abstract: | Serial communication in many embedded systems adopt wireless module whose modulation style is ASK.The character of serial communication is in burst mode.While there is no data sending from the sender,the communication jamming will be emerged as the high gain of receiver,the effect is that the uart program unable to find the start of data packet.This paper analyzes the types of wireless communication jamming,then proposes a method that by sending synchronize head before serial communication to make the communication peer possible receive the data packet.The authors also describe the receiver side state machine on synchronize bit receive. |
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| Keywords: | embedded system serial communication wireless |
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