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.