Research On Capacity And Energy Efficiency Of Massive MIMO - FBMC System

Large scale MIMO technology(Multiple-Input Multiple-Output)can greatly improve the spectrum efficiency and energy efficiency by increasing the number of base station antennas,and Massive MIMO also can greatly improve overall capacity and suppress inter-cell and intra-cell interference. Additionally, as a fundamental building block in the physical layer of 5G networks, the need for signaling techniques that are compatible with the emerging applications such as FBMC(Filter Bank Multicarrier). Filter bank multi carrier(FBMC) technology does not need to introduce the cyclic prefix(CP), which can further improve the utilization of spectrum. In the recent works, FBMC was proven to be a good match for massive MIMO as they can both bring a great number of appealing properties into the picture of 5G systems. From network capacity viewpoint, this combination is of a paramount importance as the same spectrum is not only being reused by all the users but it is being used in a more bandwidth efficient way. Believe that Massive MIMO-FBMC wireless resource management will become the next generation of mobile communications(5G) key technology.In this paper, In order to optimize energy efficiency and system capacity, focusing on the optimal combination of the number of antennas, the number of users and the transmit power of the antenna; joint optimization of the antenna selection and subcarrier allocation; the interference elimination of subcarriers, we have carried on the theory research, the simulation verification, we have carried on the theory research, the simulation verification. The main work is as follows:The use of a large number of antennas will cause the problem of energy consumption; energy efficiency will become one of the focuses of the next generation mobile communication. This paper presents a new model of comprehensive energy consumption, combined with the joint optimization of the transmit antenna number M, user number K and antenna power p, find the optimal energy efficiency parameters(M, K,p),to provide theoretical guidance for the construction of residential network.At present, there are two effective ways to improve the capacity of the system, increase the spectrum bandwidth and increase the number of antennas. However, the spectrum resource is limited, so we need to use super high frequency wave to continue to expand the bandwidth. At present, some scholars have applied research in millimeter wave; it must solve the problem of poor penetration of super high frequency wave. This paper is to increase the number of antennas to increase the system capacity, which is faced with another bottleneck problem; the increase in the number of antennas is bound to increase the difficulty of the deployment of base station. So we derive the expression of system capacity about the duality of antennas and subcarriers, use the joint optimization of antenna and subcarrier to obtain the required system capacity.At last, to increase the number of subcarriers as the starting point, a technology frequency spreading FBMC(FS-FBMC)is proposed, which increases the system capacity by increasing the number of subcarriers. And we develop the mathematical formulation of the minimum mean square error(MMSE) FSE for massive MIMO systems, which can effectively improve the spectrum efficiency and system capacity.