NOMA Research And Implementation Based On OAI Platform

As one of the key technologies for physical layer of next generation wireless communication,NOMA(Non-orthogonal Multiple Access)has more advantages than the traditional orthogonal multiplex access,which is better to be deployed for the future.The basic idea of NOMA is that the non-orthogonal technology is used for the transmitting part,the interference information is introduced and the receiver achieves the correct demodulation through the SIC(Successive Interference Combining).And this paper will illustrate a deep research on how to complete the shared power for several users and how to accomplish the SIC algorithm to get the users' information.The realization of this paper is based on the OAI(Open Air Interface)platform.The power domain superposition of different users' information is compeleted and the receiver completes the decoding of information on code and symbol level,which can verify the realization of NOMA algorithm based on OAI platform.At the same time,the simulation on Matlab platform is done.Comparing with the two results of the two platforms,whether the NOMA algorithm used on DLSIM is right or not can be verified.The result of the BLER and the throughtput can verify that NOMA has more advantages.Then a new DCI(Downlink Control Information)can be designed for NOMA based on the PDCCHSIM platform.By improving the DCI format 1 to design a new DCI,the result of the simulation provides a way to prove the new DCI is effective.At last,the new DCI can be added to the DLSIM.Then it can be used to transmit the information of two UEs and the receiver can decode the detailed information of the near user and the remote user.The result of simulation indicates that the new designed DCI can fulfill the function to transmit the downlink information of two UEs.The power domain superposition of transmitting part and the SIC algorithm of the receiver can be completed on DLSIM,which does an early exploration for NOMA transmitting through the air.