Author, Subjects, Keywords

Cited Author

 
 
   » By Author or Editor
 » Browse Author by Alphabet
 » By Journal
 » By Subjects
 » Malaysian Journals
 » By Type
 » By Year
 » By Latest Additions
 
 
   » By Author
 » Top 20 Authors
 » Top 20 Article
 » Top Journal Cited
 » Top Article Cited
 » Journal Citation Statistics
 » Usage Since Sept 2007


 
 
 

Login | Create Account

An and Detection Technique for Hybrid Subcarrier Multiplexed Spectral–Amplitude–Coding Optical CDMA Technique

Sahbudin R.K.Z., and Aljunid S.A., and Abdullah M.K., and Othman M., and Samad M.D.A., and Mahdi M.A., and Ismail M., (2007) An and Detection Technique for Hybrid Subcarrier Multiplexed Spectral–Amplitude–Coding Optical CDMA Technique. Jurnal Teknologi, 47 (D). pp. 27-38.

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
290Kb

Official URL: http://www.penerbit.utm.my/onlinejournal/47/D/JTDIS47D03.pdf

Affiliations

Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Putra Malaysia. Faculty of Engineering. Dept. of Computer and Communication System Engineering
Universiti Kebangsaan Malaysia. Faculty of Engineering. Dept. of Electrical, Electronics and Systems

Abstract

Abstract: A new detection technique named AND subtraction which is based on subtraction technique is proposed for a hybrid system of subcarrier multiplexed (SCM) spectral–amplitude–coding optical code division multiple access (SAC–OCDMA) of a point–to–point link. Spectral–amplitudecoding OCDMA is used because of its ability to cancel the multiple access interference (MAI) when code sequences with fixed in–phase cross correlation are used. On the other hand, the SCM scheme is able to enhance the channel data rate of OCDMA systems. This hybrid system is proposed for the purpose of combining the advantages of both techniques. As a result, the hybrid system is robust against interference and is much more spectrally efficient. A new code structure for spectral–amplitudecoding OCDMA system based on double weight (DW) code family is employed. The experimental simulation results of the hybrid system using the new proposed AND subtraction detection technique are compared to the hybrid system using complementary subtraction detection technique. The results show that the hybrid system using the proposed new AND subtraction detection technique improve the system performance significantly.
Abstrak: Satu teknik pengesanan baru yang dinamakan teknik penolakan AND yang berasaskan teknik penolakan dikemukakan untuk sistem hibrid pemultipleks subpembawa kod amplitud spektra akses pelbagai pembahagian kod optik bagi penyambungan titik–ke–titik. Kod amplitud spektra akses pelbagai pembahagian kod optik telah digunakan kerana kebolehannya untuk membatalkan gangguan pelbagai akses apabila jujukan kod sekaitan silang tetap dalam fasa digunakan. Skema pemultipleks subpembawa pula berkebolehan untuk meningkatkan kadar data saluran bagi sistem akses pelbagai pembahagian kod optik. Sistem hibrid ini telah dikemukakan bagi tujuan menggabungkan kelebihan kedua–dua teknik tersebut. Hasil keputusannya, sistem hibrid ini berketahanan terhadap gangguan dan lebih baik dari segi spektranya. Satu struktur kod baru untuk sistem kod amplitud spektra akses pelbagai pembahagian kod optik berasaskan keluarga kod berat kembar telah digunakan. Keputusan yang diperoleh dari ujikaji simulasi untuk sistem hibrid yang menggunakan teknik pengesan penolakan AND dibandingkan dengan sistem hibrid yang menggunakan teknik penolakan pelengkap. Keputusan yang diperoleh menunjukkan sistem hibrid yang menggunakan teknik pengesanan baru yang dinamakan teknik pengesan penolakan AND yang telah dikemukakan dapat memperbaiki prestasi sistem ini.

Item Type:Journal
Keywords:SCM, SAC–OCDMA, hybrid SCM SAC–OCDMA, detection scheme, subtraction technique, skema pengesanan, teknik penolakan
Subjects:T Technology, Engineering
ID Code:4039

[1] Kavehrad, M. and D. Zaccarin. 1995. Optical Code-Division-Multiplexed System Based on Spectral Encoding of Noncoherent Sources. Journal Lightwave Technology.133:534-545.

[2] Yang, C. C., J. F. Huang, and S. P. Tseng. 2004. Optical CDMA Network Codecs Structured with MSequence Codes over Waveguide-Grating Routers. IEEE Photonics Technology Letters. 16(2): 641-643.

[3] Huang, W., M. H. M. Nizam, I. Andonovic, and M. Tur. 2000. Coherent Optical CDMA (OCDMA) Systems used for High Capacity Optical Fiber Networks System Description, OTDMA Comparison, and OCDMA/WDMA Networking. Journal of Lightwave Technology. 18(6): 765-778.

[4] Wei, Z., H. Ghafouri-Shiraz, and H. M. H. Shalaby. 2001. New Code Families for Fiber-Bragg_Grating-Based Spectral Amplitude Coding CDMA Systems. IEEE Photonic Technology Letters. 13(8): 890-892.

[5] Pearce, M. B. and B. Aazhang. 1994. Multiuser Detection for Optical Code Division Multiple Access Systems. IEEE Transactions on Communications. 42: 1801-1810.

[6] Aljunid, S. A., M. Ismail, A. R. Ramli, B. M. Ali, and M. K. Abdullah. 2004. A New Family of Optical Code Sequences for Spectral Amplitude-Coding Optical CDMA Systems. IEEE Photonic Technology Letters. 16(10):2383-2385.

[7] Yang, C. C. 2005. Hybrid Wavelength-Division-Multiplexing/Spectral-Amplitude-Coding Optical CDMA System. IEEE Photonic Technology Letters. 17(6): 1343-1345.

[8] Nguyen, L., B. Aazhang, and J. F. Young. 1995. All-Optical CDMA With Bipolar Codes. Electronic Letters,March. 316): 469-470.

[9] Smith, E. D. J., R. J. Blaikie, and D. P. Taylor. 1998. Performance Enhancement of Spectral Amplitude-

Coding Optical CDMA using Pulse Position Modulation. IEEE Transactions on Communications. 46(9):1176-1184.

[10] Thomas T. E. and K. Bala. 1999. Multiwavelength Optical Networks: A Layered Approach, Addison Wesley Longman.

[11] Olshansky, R., V. A. Lanzisera, S. F. Su, R. Gross, A. M. Forcucci, and A. H. Oakes. 1993. Subcarrier Multiplexed Broadband Service Network: A Flexible Platform for Broadband Subscriber Services. Journal of Lightwave Technology. 11(1): 60-69.

[12] Hui, R., B. Zhu, R. Huang, C. T. Allen, K. R. Demarest, and D. Richards. 2002. Subcarrier Multiplexing for High Speed Optical Transmission. Journal of Lightwave Technology. 22(3): 417-427.

[13] Wang, X. and K. Kitayama. 2004. Analysis of Beat Noise in Coherent and Incoherent Time-Spreading OCDMA. Journal of Lightwave Technology. 22(10): 2226-2234.

[14] Smith E. D. J., R. J. Blaikie, and D. P. Taylor. 1998. Performance Enhancement of Spectral-Amplitude-Coding Optical CDMA Using Pulse-Position Modulation. IEEE Transactions on Communications. 46(9):1176-1184.

[15] Xu, L., I. Glesk, V. Baby, and P. R. Prucnal. 2004. Multiple Access Interference (MAI) Noise Reduction in A 2D Optical CDMA System Using Ultrafast Optical Thresholding. Lasers and Electro-Optics Society, 2004.LEOS2004. The 17th Annual Meeting of the IEEE. Nov. 8-9. 2: 591-592.

[16] Huang, J. F. and C. C. Yang. 2002. Reductions of Multiple-Access Interference in Fiber-Grating-Based Optical CDMA Network. IEEE Transactions on Communications. 50(10): 1680-1687.

[17] Kavehrad, M. and D. Zaccarin. 1995. Optical code-division-multiplexed systems based on spectral encoding JTDIS47D[03].

Repository Staff Only: item control page
 
 
 
 
 
 
© Copyright 2007 MyAIS Faculty of Computer Science and Information Technology, University of Malaya – All Rights Reserved. Malaysian Abstracting and Indexing System is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.