Title :
Normalized throughput of coherent time-spreading OCDMA under chip-asynchronous assumption
Author :
Ji, Jianhua ; Wu, Qing
Author_Institution :
Advanced Technology Research Center of Shenzhen University, China, 518060
Abstract :
The effects of pulse shape and pulse width on chip-asynchronous coherent time-spreading OCDMA system are evaluated by the aperiodic cross-correlation function of up-sampled sequence. It can be shown that for chip-asynchronous coherent time-spreading OCDMA, the shorter optical pulse will obtain better aperiodic cross-correlation properties, which can reduce multiple-access interference (MAI) and beat noise (BN). For 127-length Gold sequence, normalized throughput of OCDMA is derived. It can be shown that the shorter optical pulse will obtain larger normalized throughput.
Keywords :
Gold; Multi-stage noise shaping; Multiple access interference; Noise reduction; Optical noise; Optical pulse shaping; Optical pulses; Shape; Space vector pulse width modulation; Throughput; Gold sequence; cross-correlation; optical CDMA; throughput;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
