NDLI: Optical Code Construction of 2D Spectral/Spatial BIBD Codes for SAC-OCDMA Systems

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Optical Code Construction of 2D Spectral/Spatial BIBD Codes for SAC-OCDMA Systems

Content Provider	MDPI
Author	Sharma, Teena Chehri, Abdellah Fortier, Paul Ahmed, Hassan Yousif Zeghid, Medien Imtiaz, Waqas A.
Copyright Year	2021
Description	Optical code division multiple access (OCDMA) shows limitations in terms of the inefficient bandwidth utilization and low spectral density with one-dimensional (1D) codes. To overcome these limitations, a novel design is presented using a two dimensional (2D) spectral/spatial multiwavelength coding scheme. The proposed code is constructed using a 1D balanced incomplete block design (BIBD) technique. Theoretical and analytical results indicate that the proposed code provided improvement in the number of simultaneous users, code construction, and cross-correlation and minimized noise. Moreover, the bandwidth requirements can be minimized, and it can provide flexibility in addressing code sequences. Finally, results were compared with existing spectral-spatial 2D codes such as diagonal eigenvalue unity (DEU) and 2D diluted perfect difference (DPD). It was observed that the 2D-BIBD code fulfilled optical transmission needs with minimum effective source power (Psr = −27.5 dBm) when compared to 2D-DEU (−26.5 dBm) and 2D-DPD (−25.5 dBm) codes. Overall, our results suggested that the performance of BER for the proposed code was 72% and 22% higher than the existing 2D-DPD and 2D-DEU codes, respectively.
Starting Page	783
e-ISSN	20763417
DOI	10.3390/app11020783
Journal	Applied Sciences
Issue Number	2
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-01-15
Access Restriction	Open
Subject Keyword	Applied Sciences Telecommunications Spectral/spatial Balanced Incomplete Block Design Spectral Efficiency Phase Induced Intensity Noise (piin) Cardinality Ocdma
Content Type	Text
Resource Type	Article

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