Chinese Journal of Quantum Electronics, Volume. 28, Issue 5, 635(2011)
Acquirement and performance analysis of 2D-VWOOC for optical CDMA system
Based on OCS for wavelength hopping and strict VW-OOC for time spreading, a new family, named one-coincide sequence/strict wavelength optical orthogonal code (OCS/SVW-OOC), of two-dimension wavelength-hopping/time-spreading variable-weight optical orthogonal code (VW-OOC) is constructed. 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 was simulated and compared. The simulation results show that for the given parameters of SVW-OOC and length of OCS, not only the BER of OCS/SVW-OOC decreases, but also the capacity increases, when the number of wavelengths increases. And for the given parameters of OCS, code weight and number of SVW-OOC, the BER of OCS/SVW-OOC decreases when the code length of SVW-OOC increases.
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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]. Chinese Journal of Quantum Electronics, 2011, 28(5): 635
Received: Oct. 11, 2010
Accepted: --
Published Online: Sep. 27, 2011
The Author Email: Chuan-qi LI (lcq@mailbox.gxnu.edu.cn)