Authors:
Mansoor Qadir,Yousaf Khan,M. Alfiras,DOI NO:
https://doi.org/10.26782/jmcms.2020.01.00022Keywords:
Optical code division multiple access,two dimensional codes,diagonal eigenvalue unity code,zero cross correlation code,Abstract
Spectral and spatial two-dimensional optical code division multiple access (2D-OCDMA) systems cannot support low cost passive optical networks (PON) due to the extensive use of optical fiber media. Consequently, spectral and temporal OCDMA systems are explored to provide the required system capacity. Maintaining an efficient cross correlation values between the adjacent codes is of primal importance to ensure required system capacity at relatively simple architecture. To develop such a system this paper focuses on the design of a 2D spectral and temporal OCDMA coding scheme. The proposed scheme mitigates the effect of interfering users by utilizing fixed in phase cross correlation code called diagonal eigenvalue unity (DEU) code along the spectral domain; whereas zero cross correlation (ZCC) code is adapted at the temporal domain. Analysis shows that the proposed combination significantly mitigates the contribution of interfering users and reduce the impact of cross correlation. This can lead to a system with relatively high transmission capacity and simple architecture for implementation at the cost sensitive access domain.Refference:
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