Science and Education Publishing American Journal of Electrical and Electronic Engineering 2 3 2014 04 03 Modeling and Simulation of a New Duty-Cycle Modulation Scheme for Signal Transmission Systems 82 87 EN Leandre Nneme Nneme Department of Electrical and Electronics Engineering, ENSET (University of Douala), Douala, Cameroon Jean Mbihi AJEEE2014234 10.12691/ajeee-2-3-4 2014 02 28 2014 03 11 2014 04 03 This paper studies a new signal transmission scheme founded on duty-cycle modulation. The proposed signal transmission system consists of a low cost duty-cycle modulation circuit, a transmission line model and a linear demodulator. The study of the signal transmission system is conducted using analytical developments and virtual simulation models. Then, the results obtained under a variety of modulating waveforms including standard signals and arbitrary waveforms, show the high quality of the proposed duty-cycle modulation scheme for signal transmission systems.