Modelling and performance of a DVB-T2 channel estimator and equaliser for different pilot patterns

In this paper the performance of a pilot aided channel estimator and equalizer for DVB-T2 for the 8 different pilot patterns are explore. In addition to, develop a system that adopts the pilot pattern that provides the best bit error rate (BER) performance for the certain radio environment in which the receiver operates. This scheme will enhance the performance of current DVB-T2 transmission system. We test our system using different types of channel estimation scheme with increasing levels of computation complexity namely: Linear interpolation (Step), Linear Interpolation Order 0(Line0), Linear Interpolation Order 1 (Line1) and Spline Least Squares Best Fit estimators; which have been proposed to estimate the Channel Frequency Response (CFR) between the pilots´ location. In this paper, the performance results for SISO by producing BER against SNR graphs is analyzed and presented for different configurations such as QAM modulation orders, number of sub-carriers and type of pilot patterns for different radio environments.