The Research And Design Of 5G New Radio Numerology

With the continuous development of information technology,the demand for the service-providing ability of communication network has greatly increased.The Fifth Generation communication network(5G),with the vision of"all things connected",will have more powerful performance in terms of transmission rate,number of connected-devices and signal transmission delay.As the next-generation wireless access technology,5G New Radio(NR)is designed to meet the ever-expanding global connectivity needs of the coming decade and beyond.The 5G NR technology is designed to support a wide range of device types,service and deployments and will make full use of the various available frequency bands and spectrum resources.The frame structure and the system parameter design are very important parts of the NR scheme.The research content of this thesis includes two aspects:the design of 5G NR based on the flexible and variable parameter configuration set(also known as numerology in 5G),the optional parameter design scheme and the performance of throughput,spectrum efficiency of important business scenarios are analyzed;inter-cell interference cancellation algorithm for the future deployment of NR scenarios.In the first part,based on the subcarrier family set,subcarrier spacing and CP length of different substrates is simulated,and the throughput curve in different modulation or subcarrier is analyzed,making a conclusion of how to choose the length of the CP.Through the analysis of simulating the spectrum efficiency with different moving speed,put forward how to choose the parameter scheme to achieve the best performance in the future 5G key deployment scenarios.The final conclusion is of guiding significance to the adaptive configuration of system parameters in 5G NR design.Since the impact of different subcarrier spacing on inter-cell interference in the NR system is also different from usual.The second part of the study focuses on the analysis of interference characteristics and elimination methods among different subcarrier cells,and proposes a method of inter-cell interference cancellation suitable for the new case.The link-level system simulation and theoretical analysis are combined to prove the correctness,and after analyzing the simulation results,the direction of further optimizing the receiver is presented.The method of interference cancellation made in this thesis has certain practical reference value in the future network construction.