Research On MIMO-FBMC Technology

Due to adding the prototype filter design part into the Filter-bank Based Multi-Carrier(FBMC) system, FBMC techniques do not need to insert the cyclic prefix, also no longer need to completely orthogonal between each FBMC sub-carrier, which are different from OFDM technology. And those advantages make the FBMC technology is a important choice for 5G multi-carrier schemes.Multiple Input Multiple Output(MIMO) technology can provide higher system capacity and reliability for wireless communication transmission, is a important research topic in the field of wireless communications. So this thesis focuses on introducing and researching the MIMO-FBMC technology.The first chapter of article reviews the development of wireless communication, and the Orthogonal Frequency Division Multiplex(OFDM) technology and FBMC technology has carried on the summary. This chapter lists some of the advantages of OFDM technology, some of the weaknesses of OFDM technology, but also summed up some of the advantages FBMC technology and some FBMC system disadvantages. Comparing those two technical highlights the advantages of FBMC system gives the reason why study the FBMC system research.A simple description of FBMC system is presented in the second chapter. And the mathematical principle introduction of FBMC has been described, and by inference formula introduced IFFT/FFT module in FBMC system. In the following a simple introduction of MIMO technology has been proposed, especially the MIMO V-BLAST technology is given. Most researches combined spatial multiplexing technology with FBMC in this paper, so here mainly introduced the spatial multiplexing typical structure of V-BLAST. Finally, in chapter two gives the performance simulation of FBMC system.In the following my own methods to improve the performance are presented in chapter three and chapter four. Different transmit data blocks for different communication channel for SISO-FBMC system and MIMO-FBMC system are proposed in chapter three. Those methods are based on the data structure of the transmitting data, and eliminate most of the interference in the receiving part. While remaining relatively interference at this time of the communication environment and has eliminated the interference can be ignored. This article illustrates a method to make the structure, derivation and simulation and performance comparison.The fourth chapter of the article gives a method of weighing the interference and a method of transmitting antenna structure. The inspiration of this method comes from the distribution of the interference. The FBMC inherent interference in the system obeys or approximately Gaussian distribution, so this inherent interference of the system as a Gaussian white noise process. And the inspiration for transmission antenna structure from Alamouti structure, and the characteristic of the FBMC system interference. Using a conjugate relationship generate the interference with the same absolute value with opposite signs, by adding, to eliminate interference reduction. The fourth chapter of the two methods is introduced and shows the performance simulation, performance comparison.The final chapter is a summary of the full text, and describes possible future research directions.