Optimized MIMO-OFDM design for narrowband-PLC applications in medium-voltage smart distribution grids

被引:18
作者
Chrysochos, Andreas I. [1 ]
Papadopoulos, Theofilos A. [2 ]
ElSamadouny, Ahmed [3 ]
Papagiannis, Grigoris K. [1 ]
Al-Dhahir, Naofal [3 ]
机构
[1] Aristotle Univ Thessaloniki, Sch Elect & Comp Engn, Thessaloniki, Greece
[2] Democritus Univ Thrace, Dept Elect & Comp Engn, Xanthi, Greece
[3] Univ Texas Dallas, Dallas, TX USA
关键词
Channel modeling; Medium-voltage; MIMO-OFDM; Power-line communication; Smart grids; SNR gap; POWER-LINE COMMUNICATION; TRANSMISSION; NOISE; IMPEDANCE; SYSTEMS;
D O I
10.1016/j.epsr.2016.06.017
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system is proposed for narrowband power-line communication (NB-PLC) applications in medium-voltage (MV) networks. Multi-conductor transmission line theory is used for accurate MV NB PLC channel characterization and evaluation of the spatial correlation between the phase conductors. By optimizing the indices of the active OFDM sub-channels, the bit allocation across them, and the transmit power allocation across the spatial beams, the proposed MIMO-OFDM design can achieve significant data rate gains over single-input single-output OFDM transmission. The achievable MIMO-OFDM data rates are evaluated for an MV overhead network with different lengths, coupler impedances and branches, showing that the proposed MIMO-OFDM design is an efficient implementation of NB-PLC technology in MV smart distribution grids. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:253 / 262
页数:10
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