2.6GHz Band LTE System Interference Coexistence Studies

LTE is developed by the 3 GPP Long Term Evolution UMTS technology standards organization.In order to make our government and corporate interests get in the new ITU’s spectrum allocation plan to better enhance,CCSA deeply study on the new IMT spectrum allocation method.To deeply analysis the LTE system and other systems in the adjacent band interference,and find solutions to reduce adjacent channel interference,for the future to provide the appropriate basis for frequency planning and network deployment,this research for academia and industry have a very important significance.This paper aims to study the coexistence between 2500-2690MHz LTE FDD system and TDD system.The main simulation scenarios into:base station-base station,base station-terminal,terminal-terminal interference coexistence.In addition,the influence of the distance between the different systems coexist for interference generated.Obtain the various systems in typical deployment scenarios desired degree of isolation protection coexistence,provide the necessary technical support for the relevant spectrum allocation plan,spectrum resource utilization.The basic work is done as follows:(1)Analysis of the theoretical interference between LTE-TDD and LTE-FDD systems,and from its foundation,development and technical characteristics directions deduced calculation of interference between LTE-TDD and LTE-FDD systems,focusing on discussion of the calculation of adjacent channel interference;(2)Summarizes the characteristics of system simulation Monte Carlo method,and system simulation using the Monte Carlo method,while the other system for interference factors taken into account in this system,the interaction between the two systems applied to Monte Carlo simulation which improves the accuracy of the simulation results;(3)According to the interference between systems simulation algorithm,design and completion of interference between the LTE-TDD and LTE-FDD system simulation by MATLAB software programming,And get Interference System to be interference between systems relative throughput loss statistics system by the simulation;(4)The results of study of the simulation,system performance parameters are derived indicators relative throughput loss system can meet the standard.