摘要
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.
出处
《计算机应用研究》
CSCD
北大核心
2009年第7期2656-2658,共3页
Application Research of Computers
关键词
汉明码
大型传感器网络
纠错码
计算机网络
sensor networks
large scale sensor networks
Hamming code
shorten Hamming code
error correction code