汉明码在大型传感器网络中的应用研究

Application and research of Hamming code in large scale sensor networks

为了提高数据传输的可靠性,在现有措施的基础上,通过引入缩短汉明码(40,32)或(72,64),可以把传输误比特率(BER)和误码字率(WER)降低一个数量级以上;在短帧和中等信噪比情况下,(40,32)的性能更好。仿真结果表明,缩短汉明码可以有效提高传感器网络中数据传输的可靠性,降低由于大量数据重传而增加的额外功耗,具有很重要的意义。

To improve the stability of data transmission, introduced shorten Hamming codes （40,32） and （ 72,64 ）, which could both lower the bit error rate （BER） and word error rate （WER） by one grade. In case of short frame and middle Eb/ No, code （40, 32 ） worked better. Simulation result shows that shorten Hamming code can effectly improve the stability of data transmission in sensor networks and lower the energy consumption caused by data retransmission.