Research And Implementation Of The Simulation Platform For 3L Physical Layer System Based On Matlab

Information nodes in the Internet of things have a wide range,mobility and the demand for ubiquitous access.With the rapid development of information technology,people's demand for the control and management of the remote machine,acquisition and processing of the remote information,are increasing.The Internet of things also has more and more nodes.In order to make the remote node join in the Internet of things,this involves the problem of a wide range.At the same time,in order to achieve the wide spread of applying of the technology of IOT,which is to spread into people's daily life,it is required to make the terminal to achieve low cost,low power consumption so that IOT will be a greater market demand for people.Aiming at the problem that the Internet of things has,which is to make the Internet of things achieve low power consumption,low cost and wide coverage,3L(low cost,low power,long distance)physical layer system is introduced in detail in this paper.At the same time,the 3L physical layer communication system is analyzed and studied,and the corresponding simulation platform is established.Firstly,the system framework is designed based on the traditional communication system,including the communication process and the information processing module.The most common fading channel is used as the channel model in the system simulation.On the basis of this,the research on each module involved in the system has been done,including its use of the specific algorithm.In order to verify the system performance,the simulation of the system is needed,and the simulation flow of the whole system is described based on the system block diagram for the later simulation.In order to make the simulation platform of 3L physical layer communication system has good interactivity,the platform has been realized by using GUI software of Matlab.The parameters of the system can be set up to be input mode.In some of the module which has kinds of algorithms,we set up optional mode which is convenient for simulations under different conditions.The platform can also be used to show the simulation results on the interface.By setting up a click button at each module,it is convenient to check the results of the data processing flow of each module.It's easy to verify the system by checking whether the result is expected.Because of using of the synchronization in the downlink,it is found that the time of the execution time of the synchronization module is very long in many experiments,and sometimes can be more than half of time of the execution time of the whole system.Therefore,in order to verify the platform,the timing synchronization algorithm is analyzed and studied,the two different time complexity algorithm is brought into the system and compares them with the simulation analysis.The unique features of this paper is to analyze and study the 3L physical layer communication system based on the current development status of the Internet of things,and the demand of low power consumption,low cost and wide coverage of the IOT terminals.This system is studied in detail,and the interface of the simulation platform is given.This facilitates the further research of the terminals of Internet of things,and becomes the foundation for the development of the Internet of things.