研究目的
To investigate the effects of impulsive noise generated in the PLC channel on the VLC channel based on ACO-OFDM and provide solutions to combat impulsive noise at the receiver using time domain non-linearity techniques such as nulling and clipping, analyzing the system in terms of bit error rate performance.
研究成果
The performance of the hybrid PLC-VLC system is mainly influenced by the impulsive noise probability (A), with less dependency on impulsive noise power (K). The optimal threshold Tc for noise mitigation varies with SNR conditions, and the system shows promise for low-cost communication with minimal infrastructure changes. Future work should include practical implementation and comparisons with other techniques like DCO-OFDM.
研究不足
The study is based on simulations and does not include practical implementation or validation in real-life scenarios. It focuses on specific noise models (AWGN and Middleton Class A) and may not account for all real-world channel impairments. The use of Hermitian symmetry could be replaced with alternatives like the Hartley transform for further investigation.
