Multiple-input multiple-output (MIMO) visible light communication (VLC) systems can support high data rates for indoor communications. In this letter, we focus on maximizing the energy efficiency (EE) of MIMO VLC systems, where the non-negativeness of the transmit signal, the optical and electrical power constraints, and the data rate and bit error rate (BER) requirements are taken into account. The formulated problem is a difficult nonlinear fractional program. We exploit the Dinkelbach’s algorithm and Lagrangian analysis to obtain a semi-closed form solution. The performance advantage of the proposed design is verified by simulation results.

中文翻译：

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MIMO 可见光通信系统的能效优化

多输入多输出 (MIMO) 可见光通信 (VLC) 系统可以支持室内通信的高数据速率。在这封信中，我们专注于最大限度地提高 MIMO VLC 系统的能效 (EE)，其中考虑了传输信号的非负性、光和电功率限制以及数据速率和误码率 (BER) 要求考虑到。公式化的问题是一个困难的非线性分数规划。我们利用丁克尔巴赫算法和拉格朗日分析来获得半封闭形式的解决方案。仿真结果验证了所提出设计的性能优势。