Frequency Hopping Spread Spectrum Based On ZigBee Wireless Transmission

In recent years,the wireless communication technology are used widely because of the popularization of personal mobile communication devices.The wireless short distance communication technology is gradually used in the scenes such as smart home and smart hospital.In these scenes,the demand for wireless sensor network security is strict.Therefore,security has become a quite important element of the wireless sensor network.In this paper,two ZigBee wireless transmission frequency hopping spread spectrum systems which are designed based on the ZigBee system transfer mode are studied and numerically investigated.Main works are listed as following:Firstly,this paper introduces the ZigBee protocol security system,the basic principle of frequency hopping technology and the frequency hopping communication,which provides the theory foundation for the subsequent works.Secondly,a scheme of the frequency hopping spread spectrum system is investigated based on m sequence and the system is simulated.The simulation results show that the system can achieve high transmission accuracy.The system can preserve the randomness of the frequency hopping process and meet the requirements of ZigBee wireless transmission model.What's more,the system guarantees the reliability of the transmission,enhances the security of ZigBee wireless transmission,and avoids the complicated security encryption algorithm through frequency hopping.Thus,the system can increase the efficiency of the ZigBee wireless transmission and make the battery life longer.In addition,the transport mode reduces the safety reliance of ZigBee wireless transmission keys,and makes it hard to track and capture the signal.Thus the system improves the security of the ZigBee wireless transmission.At last,in order to further improve the security of the system,a self-coding frequency hopping spread spectrum system is studied and verified by numerical simulation.In this scheme,the random sequence is generated by the source sequence.This method improves the randomness of frequency hopping selection by using m sequence.The simulation results indicates that the proposed self-coding frequency hopping spread spectrum system can achieve better performance of the frequency hopping selection randomness compared to the scheme using m sequence...