基于Q3D的宽带电力线通信信道建模
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摘要
提出了一种基于Q3D的宽带电力线信道建模方法。首先利用Q3D软件提取电力线信道的单位长度参数RLGC,然后根据提取的RLGC参数计算电力线信道的ABCD传输矩阵,最后根据ABCD矩阵求出电力线通信信道传输函数和输入阻抗的幅频响应和相频响应。利用所提方法,建立基于3 mm×4 mm三芯对称电缆的宽带电力线通信信道模型,并在30 kHz～100 MHz频带范围内与实测数据进行对比。结果表明,仿真结果能够很好地符合测量结果,本文所提方法能够快速、准确地建立电力线宽带信道模型,对于电力线通信信道特性的研究以及工程实践具有重要意义。
A method of broadband power line communication(PLC) channel modeling based on Q3 D extractor was proposed. The per unit length RLGC parameters of PLC channel was extracted by the Q3 D extractor. Then, the ABCD transfer matrix of power line channel was calculated based on the extracted RLGC parameters. Finally, the amplitude and phase frequency responses of the channel transfer function and input impedance were obtained by using ABCD matrix. Based on the proposed method, a broadband PLC channel model for 3 mm×4 mm symmetrical cable was set up. The calculated results show that the simulated results fit the measured results well. The proposed method can quickly and accurately establish the broadband PLC channel model, which is of great significance for studying the characteristics of PLC channel.
A method of broadband power line communication(PLC) channel modeling based on Q3 D extractor was proposed. The per unit length RLGC parameters of PLC channel was extracted by the Q3 D extractor. Then, the ABCD transfer matrix of power line channel was calculated based on the extracted RLGC parameters. Finally, the amplitude and phase frequency responses of the channel transfer function and input impedance were obtained by using ABCD matrix. Based on the proposed method, a broadband PLC channel model for 3 mm×4 mm symmetrical cable was set up. The calculated results show that the simulated results fit the measured results well. The proposed method can quickly and accurately establish the broadband PLC channel model, which is of great significance for studying the characteristics of PLC channel.
引文
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[2]孙增友,李依潼,吉海强.基于宽带电力载波的电能质量监测系统的设计与实现[J].电测与仪表,2012(7):76-79.SUN Z Y,LI Y T,JI H Q.Power quality monitoring system design and implementation based on the broadband power carrier[J].Electrical Measurement&Instrumentation,2012(7):76-79.
[3]田新成,侯思祖,王旭.基于OFDM的低压电力线通信系统信道噪声特性分析[J].华北电力大学学报(自然科学版),2007(1):111-114.TIAN X C,HOU S Z,WANG X.Noise characteristics analysis of OFDM system in low-voltage power line communication channels[J].Journal of North China Electric Power University(Natural Science Edition),2007(1):111-114.
[4]吕新荣,李有明,余明宸.基于稀疏贝叶斯学习的电力线载波通信接收机设计[J].电信科学,2017,33(9):92-99.LV X R,LI Y M,YU M C.Design of transceivers based on sparse Bayesian learning for power line carrier communications[J].Telecommunications Science,2017,33(9):92-99.
[5]BERGER L T,SCHWAGER A,PAGANI P,et al.MIMO power line communications[J].IEEE Communications Surveys&Tutorials,2014,17(1):1.
[6]曹旺斌,尹成群,谢志远,等.多输入多输出宽带电力线载波通信信道模型研究[J].中国电机工程学报,2017,37(4):1136-1142.CAO W B,YIN C Q,XIE Z Y,et al.Research on broadband MIMO power line communications model[J].Proceedings of the CSEE,2017,37(4):1136-1142.
[7]龚钢军,陆俊,熊琛,等.混合业务公平的宽带电力线正交频分复用系统跨层资源分配[J].中国电机工程学报,2015(6):1390-1398.GONG G J,LU J,XIONG C,et al.Cross-layer resource allocation based on mixed-service fairness for broadband power-line OFDM system[J].Proceedings of the CSEE,2015(6):1390-1398.
[8]谢志远,李娜,郭以贺.适用于配电网通信的纠错编码技术研究与设计[J].华北电力大学学报(自然科学版),2008(4):97-101.XIE Z Y,LI N,GUO Y H.Research and design on a new kind of encoding and decoding of BCH codes[J].Journal of North China Electric Power University(Natural Science Edition),2008(4):97-101.
[9]孙利梅,尹成群,曹旺斌.基于模块化端口行为的无功补偿器高频建模[J].实验室研究与探索,2016(4):43-46.SUN L M,YIN C Q,CAO W B.The high frequency modeling of reactive power compensator based on modular port behavior[J].Research and Exploration in Laboratory,2016(4):43-46.
[10]PAUL C R.多导体传输线分析[M].杨晓宪,译.北京:中国电力出版社,2013.PAUL C R.Analysis of multiconductor transmission lines[M].Translated by YANG X X.Beijing:China Electric Power Press,2013.
[11]MASOOD B,BAIG S.Channel modeling of NB-PLC for smart grid[C]//IEEE Symposium on Computers&Communication,July 6-9,2015,Larnaca,Cyprus.Piscataway:IEEE Press,2015:745-750.
[12]TIRU B.A novel method of computation of transfer function of unknown networks for indoor power line communication:transfer function estimation of power line using transmission matrices[C]//IEEE Symposium on Computational Intelligence for Communication Systems&Networks,Dec 9-12,2014,Orlando,FL,USA.Piscataway:IEEE Press,2014:109-114.
[13]杨光.高频开关电源的EMI建模与仿真研究[D].北京:北京邮电大学,2008.YANG G.Research on EMI modeling and simulation of high frequency switching mode power supply[D].Beijing:Beijing University of Posts and Telecommunications,2008.
[14]Ansoft Corporation.Maxwell quick 3D parameter extractor--user’s reference[Z].1994.
[15]Ansoft Corporation.Maxwell 2D parameter extractor--user’s reference[Z].1993.
[16]CHIPMAN R A.Theory and problems of transmission lines[M].New York:McGraw-Hill,1968.