多用户大规模MIMO系统能效优化算法

For the downlink of a multi-user massive MIMO system, in order to meet the user\'s QoS requirements, a system energy efficiency optimization model on the transmit power, the number of transmit antennas, and the number of user antennas is established. Different from the traditional iterative algorithm to solve the transmission power that optimizes the energy efficiency of the system, this paper proposes a closed-form expression using the Lambert W function analysis to obtain the optimal transmission power of the system, which greatly reduces the computational complexity and further uses antenna selection The algorithm further optimizes energy efficiency, and uses a convex optimization algorithm to optimize energy efficiency. Simulation results show that the algorithm proposed in this paper can effectively improve system energy efficiency and system performance.