Symbol-Level Synchronization Channel Modeling With Real-World Application: From Davey-MacKay, Fritchman to Markov

Errors in realistic channels contain not only substitution errors, but synchronization errors as well. Moreover, these errors are rarely statistically independent in nature. By extending on the idea of the Fritchman channel model, a novel error category-based methodology for determining channel characteristics is described for memory channels that contain insertion, deletion, and substitution errors. The practicality of such a methodology is reinforced by making use of real communication data from a visible light communication system. Simulation results show that the error-free and error runs using this new method of defining the channel clearly deviates from the Davey-MacKay synchronization model which is memoryless in nature. This further emphasizes the inherent memory in these synchronization channels which we are now able to characterize. Additionally, a new method to determine the parameters of a synchronization memory channel using the Levenshtein distance metric is detailed. This method of channel modeling allows for more realistic communication models to be simulated and can easily extend to other areas of research such as DNA barcoding in the medical domain.