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Abstract
This paper proposes a new design of encoder and decoder with novel code design for one–dimensional (1D) (spectral domain) and two-dimensional (2D) (spectral and time domain) optical code divisions multiple access system. The suggested code has a zero cross-correlation property in 1D and 2D modes, so multiple-access interference (MAI) is totally eliminated. In proposed new encoder, code reconfiguration is achieved within two users in each group at the transmitter end with defined sequence. This approach degrades the code detection probability at the receiving end against the eavesdropper in the presence of single user in network. Another switching improves the code security against the on–off energy-level detection at the transmitter end. The mathematical and simulation analysis is performed for the proposed code. The probabilities of code estimation at the transmitter and receiver ends are analysed which shows a better confidentiality. The mathematical analysis shows that the proposed code has a better performance than the existing 1D random diagonal, 1D modified double-weight, 2D perfect difference, and 2D diluted perfect difference codes.
DISCLOSURE STATEMENT
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Sumit Gupta
Sumit Gupta has received the BE degree in electronics and communication engineering and the MTech degree in VLSI and Microelectronics Design from RGPV, Bhopal .He is now a PhD scholar under the Electronics and Communication Engineering Department, MANIT, Bhopal, India. His current research interests include VLSI, optical communication, and digital communication.
E-mail: [email protected]
Aditya Goel
Aditya Goel has BE(Hons.) and MTech (I.I.T. Bombay) degrees. He received the PhD degree in optical network in 2000. He has teaching and research experience of more than 23 years. Presently, he is working as a professor in Electronics & Communication at National Institute of Technology, (MANIT), Bhopal. He had been the Principal Investigator of the research project titled “Broadband Light wave communication systems” sanctioned by Government of India, New Delhi. He worked as the Principal Investigator of the R&D Project, “High speed optical components for WDM systems” sanctioned by M.H.R.D., Government of India, New Delhi. He has reviewed many research papers in International conferences and journals including SPIE. He is a Life Fellow member of the Institution of Electronics & Telecommunication Engineers, Fellow of Institution of Engineers (I.E.), India, and Life Senior member of Computer Society of India. His areas of interest are optical communication, digital signal processing, and computer communication.
E-mail: [email protected]