摘要
本文介绍了分离式医用多导生理记录仪的数据传输部分,使用蓝牙设备来传输采集的睡眠生理数据,但数据传输过程中干扰比较大,故本文在蓝牙跳频技术的基础上通过固定蓝牙无线数据传输信道号来保障无线数据的安全传输。文章主要讲述了蓝牙跳频序列的生成,以及将该跳频序列的一部分序列划分成5个子序列并对其进行改进后,分配给不同的蓝牙设备以解决微微网之间通信干扰问题。最终仿真结果表明改进的5个子序列间的汉明互相关特性非常好,能实现抗干扰的目的。
This article describes the part of data transmission of the separate medical polygraph recorder. It using a bluetooth device to transmit the sleep physiological data, but the interference is relatively large in the data transfer process. To protect the security of the wireless data transmission, this paper regulates the wireless data transmission channel numbers of the bluetooth device on the basis of the Bluetooth frequency - hopping technology. It mainly focuses on the generating of blue- tooth hopping sequences. And a part of the hopping sequences are divided into five sub - sequences ,which will be improved and assigned to bluetooth devices to resolve the issue of communications interference between piconets. Simulated results show that the proposed method can not only achieve anti - interference but present good characteristics of hamming cross - correlation.
出处
《无线通信技术》
2013年第4期11-15,共5页
Wireless Communication Technology
关键词
蓝牙微微网
跳频序列
抗干扰
汉明互相关特性
bluetooth piconet
hop sequences
anti - interference
hamming cross - correlation characteristics
