Design And Implementation Of Orthogonal Frequency Hopping Multiplex Transceiver System

With the continuous development of communication field,frequency hopping communication technology has been widely used because of its strong concealment.As the representative of the practical frequency hopping communication system,the Link 16 system has a complete system structure and strong communication performance.This paper designs and implements the frequency hopping communication system on the software radio platform with reference to the Linkl6 system.This paper creatively puts forward the expansion plan that can be used in traditional frequency hopping communication system and carries out engineering implementation.At the same time,the theoretical proof of the possible frequency point collision between multiple devices is also made.As a whole,the work of the paper has a strong research significance from the perspective of theoretical innovation and application.The main work of this paper is to complete the following parts on the Software Defined Radio platform:(1)The paper implements the frequency hopping communication system.Referring to the framework of general frequency hopping transceiver system,the single channel frequency hopping communication system is set up in sequence of chip configuration,clock configuration,transceiver logic control and synchronization scheme.The basic functions of single channel frequency hopping transceiver are realized.(2)The synchronization function of frequency hopping communication system is realized in this paper.In the system,the timeslot synchronization module and the network synchronization module are added.Timeslot synchronization ensures the consistency of the frequency hopping rhythm of send and receive equipment.Network synchronization guarantees the rapid access of physical equipment.(3)Feasibility evaluation and implementation of the system expansion scheme are done.The feasibility evaluation and theoretical demonstration of the system expansion are carried out from the aspects of the resource utilization,the extensibility of function,the collision of frequency point and so on.After that,the function design and implementation are carried out in combination with the target of system capacity expansion.The sending capacity of the system is doubled,and the frequency domain of the two paths is orthogonal to each other.The reception capacity of the receiving part has been increased by 3 times.Each link is independent.This paper not only completes the system expansion but also guarantees the compatibility to the original system.The system supports the real-time communication of multiple devices in the same time and space.