Feedforward joint phase and timing estimation with OQPSK modulation

We propose an algorithm for joint carrier phase and timing estimation with offset quadriphase modulation (OQPSK) signaling. The derivation is based on maximum-likelihood arguments and leads to a feedforward structure that ope rates on signal samples taken at bit rate. Phase and timing algorithms oper ate in parallel-not sequentially-and provide their estimates in a fixed tim e. The synchronizer is readily implemented in digital form and is particula rly suitable for burst mode transmissions. its performance is analytically assessed and verified by simulations, Comparisons are made with other metho ds described in the literature.