Acquirement and performance analysis of 2D-VWOOC for optical CDMA system

Abstract

Abstract:

A new family, named OCS/SVW-OOC, of two-dimension wavelength –hopping / time-spreading variable-weight optical orthogonal code (VW-OOC) is constructed, based on one-coincide sequence (OCS) for wavelength hopping and strict VW-OOC for time spreading. Auto-correlation and cross-correlation performances of OCS/SVW-OOC are analyzed in detail and the mean value of cross-correlation is reduced. The bit error ratio (BER) for the 2D code has been simulated and compared. The simulation results show that given the parameter of SVW-OOC and the length of OCS, not only the BER of OCS/SVW-OOC is reduced, but also the capacity is enlarged, when the number of wavelengths is increased. And for the given parameters of OCS, code weight and number of SVW-OOC, the BER of OCS/SVW-OOC is reduced when the code length of SVW-OOC is added.

Key words: optical communication, 2D-VWOOC, SVW-OOC, OCS

CLC Number:

TN921.2

LI Chuan-qi, ZHOU Yuan-yuan, ZHANG Yuan, CHEN Hui,GUAN Cheng-long. Acquirement and performance analysis of 2D-VWOOC for optical CDMA system[J]. J4, 2011, 28(5): 635-640.

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