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为了解决无线通信中的安全保密性问题,针对传统的跳频扩频方案存在的技术实现上的困难和无线频谱资源匮乏的矛盾,对信号能量在空间的分布进行了研究,结果表明:在多天线收发数字无线通信中,各处的信号空谱是不同的,这说明无线通信不仅有频谱资源还有更为丰富的空谱资源。据此,提出一种分布式多天线跳空收发方案——0/1式跳空技术。该技术利用发端跳空图案,通过训练得到收端多天线接收加权跳空图案,从而无需确知收发两端的阵列流型,也无需求解复杂的多径信道,就能得到规整的星座图。仿真实验验证了0/1跳空收发技术方案的优越性和安全保密性。
In order to solve the problem of security and confidentiality in wireless communications, aiming at the existing technical difficulties in frequency hopping spread spectrum schemes and the lack of radio spectrum resources, the distribution of signal energy in space has been studied. The results show that in more Antenna transceiver Digital wireless communications, the signal spectrum is different everywhere, which shows that wireless communications not only spectrum resources but also more abundant space spectrum resources. Based on this, a distributed multi-antenna hopping transceiver scheme, 0/1 hopping technology, is proposed. The technique uses the transmit end-to-end pattern to obtain the receive end-to-end multi-antenna receive weighted gap pattern by training, so that a regular constellation can be obtained without knowing the array flow pattern at both ends of the transmit and receive channels and without solving complex multipath channels. Simulation results show the superiority and security of the 0/1 hopping transceiver scheme.