R.K.Z. Sahbudin
Department of Computer and Communication System Engineering, Faculty of Engineermg, Universiti Putra Malaysia, Malaysia 43400 Serdang, Selangor, Malaysia
M.K. Abdullah
Department of Computer and Communication System Engineering, Faculty of Engineermg, Universiti Putra Malaysia, Malaysia 43400 Serdang, Selangor, Malaysia
M.D.A. Samad
Department of Computer and Communication System Engineering, Faculty of Engineermg, Universiti Putra Malaysia, Malaysia 43400 Serdang, Selangor, Malaysia
M.A. Mahdi
Department of Computer and Communication System Engineering, Faculty of Engineermg, Universiti Putra Malaysia, Malaysia 43400 Serdang, Selangor, Malaysia
M. Ismail
Department of Electrical, Electronics and Systems, Faculty of Engineering, Universiti Kebangsaan Malaysia
ABSTRACT
In this research, a hybrid subcarrier multiplexed spectral-amplitude-coding optical code-division-multiple-access (SCM SAC-OCDMA) system is proposed for the purpose of combining the advantages of both techniques. SAC-OCDMA is employed because of its ability to eliminate the Multiple Access Interference (MAI) when code sequences with fixed in-phase cross correlation are used. In order to enhance the channel data rate of the OCDMA systems, the SCM technique is used. As a result, the hybrid system is robust against interference and is much more spectrally efficient. The system utilizes double weight (DW) code that has a weight W equal to two, code length N equal to six and cross correlation λ equal to 1. A simple and new detection technique called optical spectral amplitude direct decoding is proposed. Based on the theory and experimental simulation results obtained, the new proposed detection technique provides a better performance than the conventional balanced detection technique.
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How to cite this article
R.K.Z. Sahbudin, M.K. Abdullah, M.D.A. Samad, M.A. Mahdi and M. Ismail, 2007. Hybrid SCM SAC-OCDMA System Employing New Optical Spectral Amplitude Direct Decoding Detection Technique. Journal of Applied Sciences, 7: 1942-1947.
DOI: 10.3923/jas.2007.1942.1947
URL: https://scialert.net/abstract/?doi=jas.2007.1942.1947
DOI: 10.3923/jas.2007.1942.1947
URL: https://scialert.net/abstract/?doi=jas.2007.1942.1947
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