BCH Coding Performance Evaluation on a Land Mobile Channel Based OFDM System

In this study, we evaluate the performance of BCH (Bose-Chaudhuri-Hocquenghem) correcting codes when used to protect data over a land mobile channel using OFDM (Orthogonal Frequency Division Multiplexing) modulation. To deal with memory channels, the Gilbert-Elliott (GE) model was considered to simulate a Rayleigh fading channel and BCH codes to analyse the error process. Relating GE parameters to the physical quantities determining the fading statistics, we simulated the effect of introducing OFDM parameters with respect to the parameters of the channel error probability function (e.g., mobile speed, modulation type, delay constraint and parameters of error correcting codes). Simulation results using OFDM-BPSK modulation shows, for different BCH codes, significant performance.