Comparison Between Impulsive Noise Models Considering a Time Structure of LED Noise

In this paper, we compare the characteristics of impulse noise models from the viewpoint of interference evaluation in a coded digital communication system with the noise radiated from LED bulbs. In particular, the noises in a time series are simulated with the estimated parameters from measured data using the Middleton class A model, the Markov-Middleton model, and the proposed model which use a duration distribution at a Markov state of noise process. It is verified that the proposed model provides a property of the actual LED noise by analyzing the statistical characteristics of the durations of the simulated and measured noises. Furthermore, the bit error rate (BER) simulation is performed for comparison with the capability of the proposed and existing models in terms of the interference evaluation in a coded digital communication system. In a basic coded QPSK system used in this paper, the BER performance by using the proposed model indicates a similar tendency to that by the measured noise in comparison with the existing models. Results showed that the duration distribution is important for the evaluation of performance degradation of interfered coded system and the proposed model has sufficient possibility to be modeled of the actual LED noise.