Remote Secure Communication System Based on Wireless Channel Key Generations

In this paper, we designed a remote secure communication system based on the Message Queuing Telemetry Transport (MQTT) protocol for wireless channel key generations. We firstly propose a better performance quantization method, then simulate the performance of polar codes based wireless channel secret key generation system by different key quantization methods and orders. In the experimental research, a remote wireless key generation system was proposed and established for the first time by N210 Universal Software Radio Peripheral (USRP) platforms. We collected six indoor and outdoor Channel State Information (CSI) scenarios, a Polar codes based forward secure communication system is designed to resist mismatching of quantified key bits due to the channel non-reciprocities. When the terminal is in the indoor environment, the success transmission rate could reach 100% without people movement, and in the case of outdoor Line-Of-Sight (LOS), the success transmission rate is around 90% in both LOS and Non-line-of-sight (NLOS) scenarios.