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 a fast converging PLL. It can be used for fixed rate as well as variable rate applications. The algorithm was developed using SPW, and verified on an FPGA-based prototype board using real data[1].