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首页> 外文期刊>Renewable Power Generation, IET >Linear precoder design for base station energy cooperation in DC microgrids
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Linear precoder design for base station energy cooperation in DC microgrids

机译：直流微电网中基站能量协作的线性预编码器设计

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摘要

In this study, the energy data transfer problem in a DC microgrid with multiple renewable powered base stations (BSs) is considered. These BSs can share the renewable generation among each other. The energy cooperation is optimised by the control unit. For effective energy cooperation, energy data needs to be transferred from BSs to the control unit with low latency and high reliability. For cellular enabled microgrid communication, the energy data exchange and cellular communication both use the same communication resources. Thus, there will be interference at the control unit and cellular user (CU), which degrades the reliability of energy data transfer. To solve this problem, a linear precoding technique is designed to minimise the mean square error of the desired messages at the control unit, BSs, and CU while the interferences are kept at a predefined level. For the designed precoders, the expressions of signal-to-interference-plus-noise ratio are formulated and the error performance is analysed. Numerical simulation has been performed to compare the considered precoding technique with other precoding techniques. The simulation results demonstrate that optimum precoding can improve the error performance at the control unit, BSs, and CU by 1, 5, and 3 dB, respectively.
机译：在这项研究中，考虑了具有多个可再生供电基站（BS）的DC微电网中的能源数据传输问题。这些BS可以彼此共享可再生能源。能量协作通过控制单元进行优化。为了有效地进行能量协作，需要以低延迟和高可靠性将能量数据从BS传输到控制单元。对于支持蜂窝的微电网通信，能量数据交换和蜂窝通信都使用相同的通信资源。因此，在控制单元和蜂窝用户（CU）处将存在干扰，这降低了能量数据传输的可靠性。为了解决这个问题，设计了一种线性预编码技术，以使控制单元，BS和CU上所需消息的均方误差最小，同时将干扰保持在预定水平。对于所设计的预编码器，公式化了信号干扰加噪声比的表达式，并分析了误码性能。已经进行了数值模拟以将考虑的预编码技术与其他预编码技术进行比较。仿真结果表明，最佳的预编码可以分别将控制单元，BS和CU的误码性能提高1、5和3 dB。

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