Improvement on the Multiple Differential Detection Algorithm for Continous Phase Frequency Shift Keying(CPFSK) Signals
Ding Ming · Telecommunication Engineering · 2006
The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications.Among various demodulation techniques of CPFSK,multiple differential detection(MDD) strategy exhibits even better BER performance than coherent detection,however,its hardware complexity is very high.In order to solve the problem,a more practical MDD algorithm is derived.Computer simulations are performed for original MDD and improved MDD algorithms in case of full response 4CPFSK signals transmitted over AWGN channels.Although the improved MDD algorithm needs additional 0.9dB in E_b/N_0 to maintain BER performance at 10~(-3),its hardware complexity is only 1/10 of the original one.Therefore,the receiver based on the improved MDD algorithm is a better candidate for mobile applications.