基于干扰对齐的能量效率优化算法分析

摘要

为了提高MIMO系统的能量效率，本文首先提出一种干扰对齐优化算法—正交最大信干噪比算法，该算法针对最大信干噪比算法在中高信噪比条件下的不足完成优化。然后，在该算法基础上进一步提出能量效率优化算法，该算法充分发挥了干扰对齐在抑制干扰方面的优势，利用MIMO系统的大量自由度，使系统中各用户能够同时收发信息而不产生相互干扰。仿真实验结果表明，提出的基于干扰对齐的能量效率优化算法能够显著提高MIMO系统的能量效率。%In order to improve the energy efficiency of MIMO systems, an interference alignment optimization algorithm named orthogonal maximum signal-to-interference-plus-noise (SINR) was proposed in this paper. The proposed algorithm realizes the optimization according to the flaw of maximum SINR algorithm at high SNR. Then, based on the proposed algorithm, an energy efficiency optimization algorithm was further proposed, which fully takes the advantage of interference alignment in interference suppression. Specifically, a large number of degree of freedom in MIMO system was utilized so that users in the system to receive and send information simultaneously without mutual interference. Simulation results show that the energy efficiency optimization algorithm based on interference alignment can significantly improve the energy efficiency of MIMO system.