Differential Amplitude Phase Shift Keying (Dapsk): A New Modulation Method For A Turbo Code In Digital Radio Broadcasting

Abstract

The multilevel modulation techniques of M–Differential Amplitude Phase Shift Keying (DAPSK) have been proposed in combination with Turbo code scheme for digital radio broadcasting bands below 30 MHz radio channel. Comparison of this modulation method with channel coding in an Additive White Gaussian Noise (AWGN) and multi–path–fading channels has been presented. The analysis provides an iterative decoding of the Turbo code.