The Research of Numeral Orthogonal Demodulation Algorithm basedon Soft ware Radio and DSP

This article is based on the theory of software radio and orthogonal demodulation algorithm, and have made analysis to AM, FM, ASK, FSK, PSK ect, embarking on the theory of orthogonal transforming . It has analyzed the synchronism and the quartered component which each signal orthogonal decomposes, and has carried on the summary induction to it. Finally complete the multi de-modulation with the software on the TMS320C5402 chip.