Experimental Demonstration of Subband Index Techniques for m-CAP in Short Range SI-POF Links

摘要： In this letter, novel spectrally-efficient subband index (SI) techniques have been developed for multiband carrierless amplitude and phase modulation (m-CAP). The subband index techniques transmit additional information bit on the index of the conventional m-CAP subbands. Experimental demonstrations are performed in a short range optical data link using step-index plastic optical fibre (SI-POF). The demonstrations show that the proposed techniques enable flexibility in design and significantly improve the power/spectral efficiency of the conventional m-CAP.