A new simulation method of zero crossings for power line communication systems

With the growing demands on the deployment of devices for power line communication (PLC), different issues have to be investigated. Due to the fact that zero crossing is of low noise power and can be applied for synchronization, zero crossing communication for power line system was carried out. However, its feasibility has not been analyzed thoroughly and the complicated simulation method also makes it difficult to explore further. This paper introduces a PLC system based on quadrature amplitude modulation (QAM) technology and presents a simple zero crossing simulation method. The validation of the model and the fitness for PLC are proved by the comparison of the constellation diagrams in different environments.