Design and Implementation of OFDM System for Low Bit Rate Power Line Communication on FPGA
Date Issued
2007
Date
2007
Author(s)
Chen, Jen-Chieh
DOI
zh-TW
Abstract
As the applications of internet become more popular, Smart Home Networks have received much attention, and gradually relevant technologies have also been developed successfully. Being one of the media to connect Smart Home Networks, power lines have a unique advantage, i.e., there is no need for re-wiring in residential houses. Power line communications have been utilized for control management in household appliances nowadays. However, the performance of power line communications may be restricted by some characteristics of power lines.
In this thesis, a design and implementation of an OFDM system for low bit rate power line communication on FPGA experimental board is studied. Due to the multi-path effect and impulsive noise often seen in power lines, quality of power line communication is tested with the OFDM modulation technique, which has the potential to be a good solution to the problem. The design works include implementing the OFDM signals by the ALTERA FFT MegaCore Function on an FPGA board, using microprocessors as the control center to connect FPGA and PC interface, the conversion of digital/analog segments, generation and demodulation of frequency shift keying signals, and implementing coupling circuits. Finally, quality of this OFDM-based power line communication system is examined by experiment results.
Subjects
家庭自動化
電力線網路通訊系統
OFDM調變
快速傅立葉轉換
現場可程式化邏輯閘陣列
Home Automation
Power Line Communication
OFDM Modulation
Fast Fourier Transformation
FPGA
Type
thesis
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