| 摘要: |
| 在传统的空移键控技术基础上，对天线映射规则进行伪随机改变，旨在探索一种新的抗截获通信方式。重点分析了所提方案的实现原理及天线映射结构，并计算了其误码率联合上界；接收端采用最大似然算法，确保了天线位置序号能被正确检测。性能仿真表明，该方案的传输性能取决于发送与接收天线数目，而与所选取天线映射规则的个数无关。最后，从窃听方破译天线序列复杂性的角度出发，证明了系统具有很好的反侦察、抗截获性能。 |
| 关键词: 空移键控 抗截获通信 最大似然算法 天线映射规则 伪随机变化 |
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| A new space shift keying system based on pseudo-random antenna mapping rule |
| GUO Pengcheng,YAO Fuqiang,GUAN Shengyong,ZHANG Chao |
| () |
| Abstract: |
| Based on the traditional Space Shift Keying(SSK) technology,this paper changes the antenna mapping rule pseudo-randomly in order to explore a new anti-interception communication way. The principle of the proposed scheme and antenna mapping structure are emphatically analyzed，and the upper bounds of bit error rate(BER) of the proposed scheme are calculated. The Maximum-Likelihood(ML) algorithm adopted by the receiver ensures that the antenna position can be detected correctly.Performance simulation shows the transmission performance depends on the numbers of sending and receiving antennas,and has nothing to do with the numbers of selected antenna mapping rules.Finally,it is proved that the system has good counter-reconnaissance and anti-interception performance from the aspect of complexity of eavesdroppers deciphering antenna sequences. |
| Key words: space shift keying anti-interception communication maximum-likelihood algorithm antenna mapping rule pseudo-random change |
《电讯技术》编辑部 