0/1 space hopping transceiver technology for transmission security based on reverse training

In order to guarantee wireless communication security, this paper puts forward a 0/1 space hopping transceiver technology based on reverse training. Starting from the influence of multipath on wireless communications, this paper introduces space spectrum and makes a more in-depth explanation about it. Research shows complex channel environment has great effects on the signal distribution, and we can take advantage of channel characteristics to realize secure transmission in wireless communication. In reverse training, the receiver transmits training symbols to the transmitter in advance. Obtaining the channel information via reverse training, the transmitter uses the information to design the transmitted signals' weights. According to the channel reciprocity principle, demodulating signals needs channels corresponding to the designed weights, therefore the receiver can demodulate signals correctly while eavesdropper can't because he hasn't the corresponding channels, thus greatly reducing the information probability of interception. Simulation results show that under the same signal-to-noise ratio (SNR), the method can make the desired receivers maintain a very low symbol error rate (SER), while the eavesdropper keeps a high SER all the time no matter what the SNR is.