MIMO-OFDM中压地下电缆电力线通信方案设计
MIMO-OFDM Scheme design for Medium Voltage Underground Cables based Power Line Communication
摘要：
电力线通信（PLC）提供了智能电气功能，如电能质量测量，故障调查和远程控制的电网。然而，由于家用PLC的快速发展，大多数研究工作都是在低压（LV）场景下进行的。本文的目的是设计一种基于MIMO-OFDM的中压地下电力线信道传输链路，并对其性能进行评估。在存在脉冲噪声和背景噪声的情况下，MIMO信道被建模为修改的多径模型。与大多数MIMO电力线传输的文献不同，本文采用空间复用而不是分集来提高传输速率。该传输系统采用了最初为低压电力线通信设计的Turbo编码方法。通过比较MIMO-OFDM系统中Turbo码的误码性能，评估了Turbo码在中压电力线通信中的适用性。研究了频带变化对PLC系统性能的影响。
英文摘要：
Power line communication (PLC) provides intelligent electrical functions such as power quality measurement, fault surveys, and remote control of electrical network. However, most of research works have been done in low voltage (LV) scenario due to the fast development of in-home PLC. The aim of this paper is to design a MIMO-OFDM based transmission link under medium voltage (MV) underground power line channel and evaluate the performance. The MIMO channel is modeled as a modified multipath model in the presence of impulsive noise and background noise. Unlike most literatures on MIMO power line transmission, we adopt spatial multiplexing instead of diversity to increase the transmission rate in this paper. The turbo coding method originally designed for LV power line communication is used in the proposed transmission system. By comparing the BER performance of MIMO-OFDM system with and without the turbo coding, we evaluate its applicability in MV power line communication. The effect of frequency band varying on the PLC system's performance is also investigated.
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