Modulation Technique A New Demodulator For Inverse Pulse Position Modulation Technique

Abstract

Inverse pulse position modulation is one of the modulation techniques for Visible LightCommunication (VLC) systems. In this paper, a new demodulator scheme, which isnamed as Slot Period Detector (SPD), is proposed by using frequency detection technique.The proposed architecture computes the period time for each slot. Thanks toSPD technique, the complexity of I-PPM receiver is dramatically reduced. However, thetraditional receiver has better Bit Error Rate (BER) performance than that of proposedSPD structure. The important issue is that whether the proposed receiver is practicablefor real-time systems hence, the SPD is implemented on Field Programmable Gate Arrays(FPGA) board to demonstrate an applicable receiver.