A new timing recovery method for DTV receivers

We report a new unsynchronized timing recovery method designed for receiving digital TV signals modulated in 256QAM, QPSK and VSB format. The new method includes a simplified and efficient interpolator design, and fast converging PLL. It can be used for fixed rate as well as variable rate applications. The algorithm was developed using SPW, and implemented using an FPGA-based prototype board using real data.