Power line communication apparatus used in low-voltage installations. Radio disturbance characteristics. Limits and methods of measurement

2013 ◽  
Keyword(s):  
Low Voltage ◽  
Power Line ◽  
Power Line Communication ◽  
Methods Of Measurement

Research on the Technology of Low-Voltage Power Line Carrier-Current Communication Based on OFDM

2013 ◽  
Vol 397-400 ◽  
pp. 2004-2007
Author(s):  
Wen Yan Ding ◽  
Zhi Ning Sun ◽  
Xiang Long Wang
Keyword(s):  
Low Voltage ◽  
Power Line ◽  
Power Line Communication ◽  
Channel Code ◽  
Carrier Wave ◽  
Wave Modulation ◽  
Modulation And Demodulation ◽  
Error Ratio ◽  
Power Line Carrier ◽  
Bit Error Ratio

The design on the system of low-voltage power line carrier-current communication based on OFDM was finished in this paper. Then model of the system was simulated and the modulation and demodulation of OFDM were realized. The results show that the integral performance can be enhanced with channel code. And the bit error ratio (BER) of the system is different with several sub-carrier wave modulation modes. This system could satisfy the requirement of power line communication basically.

Carrier Modulation Technology Based on Orthogonal Frequency Division Multiplexing

2013 ◽  
Vol 774-776 ◽  
pp. 1671-1676
Author(s):  
Chen Wu Li ◽  
Jian Zhang ◽  
Qin Xie ◽  
Xiao Hong Zhang
Keyword(s):  
Fourier Transform ◽  
Discrete Fourier Transform ◽  
Orthogonal Frequency Division Multiplexing ◽  
Low Voltage ◽  
Power Line ◽  
Power Line Communication ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Family Network ◽  
Inverse Discrete Fourier Transform

This paper first analyzes the transmission characteristics of low-voltage power line channels with the focus on the study of carrier modulation technology regarding the power line communication part, then proposes the orthogonal frequency division multiplexing technology that serves for the digital communication of family network power line communication gateways, analyzes the OFDM system principle, actulizes OFDM modulation and demodulation through discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT), and build the OFDM simulation model. Finally, a specific plan of using power lines as the family network transmission media is proposed.

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