The LMS channel estimation algorithm of low-voltage power line communication

2012 ◽  
Author(s):  
Zhang Qingqing ◽  
Yan Xiao ◽  
He Ling ◽  
Dang Sanlei
Keyword(s):  
Channel Estimation ◽  
Low Voltage ◽  
Estimation Algorithm ◽  
Power Line ◽  
Power Line Communication

Channel Estimation Based on Compressed Sensing Technique for Low-Voltage Power Line Communication

2018 ◽  
Vol 13 (10) ◽  
pp. 1468-1472
Author(s):  
Tao Liu ◽  
Yong-Jian Wang ◽  
Yu-Fei Zhao
Keyword(s):  
Channel Estimation ◽  
Compressed Sensing ◽  
Orthogonal Frequency Division Multiplexing ◽  
Low Voltage ◽  
Matching Pursuit ◽  
Estimation Method ◽  
Power Line ◽  
Power Line Communication ◽  
Ofdm Systems ◽  
Channel Information

Broadband low-voltage power line communication (PLC) has many advantages including less investment cost, construction speed, and convenient access. Since the orthogonal frequency division multiplexing (OFDM) technology has strong anti-jamming and anti-frequency selective fading characteristics naturally it becomes a better low voltage power line communication solution. We proposed an OFDM channel estimation method based on compressed sensing (CS) technique according to the channel characteristics of low-voltage power lines. CS algorithm in OFDM system was discussed and an orthogonal matching pursuit (OMP) algorithm was applied to reconstruct the PLC channel information. The simulation results showed that the communication channel estimation method based on CS technique was feasible in PLC system, and the validity of information transmission in OFDM systems can be enhanced.

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.

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