BLOCK AND DECODED ERROR PROBABILITIES OF DPSK IN AWGN

In this letter, we consider the error correlation in differential phas e-shift keying (DPSK) demodulation in terms of its effects on the bloc k and decoded error probabilities. The exact block and decoded error p robabilities are derived and computed for additive white Gaussian nois e (AWGN). Comparisons are made with the approximate block and decoded error probabilities based on a memoryless model which ignores the erro r correlation. The effectiveness of interleaving in improving the erro r performance is addressed under various conditions. Both binary and n onbinary DPSK are studied.