Results 231 to 240 of about 15,290 (259)

Unipolar codes with ideal in-phase cross-correlation for spectral amplitude-coding optical CDMA systems

IEEE Transactions on Communications, 2002
Unipolar codes with ideal in phase cross-correlation are important in spectral amplitude-coding optical code-division multiple-access (CDMA) systems since these codes eliminate multiuser interference and also suppress the effect of phase-induced intensity noise.
Zou Wei, Hooshang Ghafouri-Shiraz
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IP routing by an optical spectral-amplitude-coding CDMA network

IEE Proceedings - Communications, 2002
An optical spectral-amplitude-coding CDMA network is proposed as a solution to the IP routing bottleneck in the global Internet. Its performance has been analysed for two different cases. For a given peak bit rate the network performance can be improved by reducing channel utilisation. However, when each user in the network has a fixed average bit rate,
Zou Wei, H. Ghafouri-Shiraz
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Performance Analysis of Core-Multiplexed Spectral Amplitude Coded OCDMA PON

Journal of Optical Communications and Networking, 2016
Spatial division multiplexing is emerging as a promising solution to improve the optical fiber transmission capacity. In this paper, a multicore fiber (MCF)-based optical access network architecture utilizing spectral amplitude coded optical code division multiple access (SAC-OCDMA) is proposed. We numerically analyze the impact of intercore cross talk
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Security Performance of Spectral Amplitude Code OCDMA: Spectrally Encoded Pulse Bandwidth Effects

Journal of Optical Communications, 2009
This paper presents security performance of spectral amplitude code OCDMA based on Modified Double Weight (MDW) OCDMA scheme. The eavesdropper probability of correctly detected Spectral Encoding Chip Bandwidth (SECB) pulses in a code word is investigated.
Hesham A. Bakarman, Sahbudin Shaari, Mahamod Ismail   +2 more
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Design and performance analysis of a new code for spectral-amplitude-coding optical CDMA systems

2000 IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications. ISSTA 2000. Proceedings (Cat. No.00TH8536), 2002
A new code structure for spectral amplitude optical code-division multiple-access is proposed. An upper bound on the code size is developed and an optimal construction that achieves this bound is presented. Further, a performance analysis of an optical CDMA system that utilizes this code is given. Our results reveal that such a new code can effectively
null Zhou Xiang, H.H.M. Shalabu, null Lu Chao   +2 more
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Construction of a new code for spectral amplitude coding in optical code-division multiple-access systems

Optical Engineering, 2007
An enhanced code structure for spectral amplitude coding in optical code division multiple access systems based on double weight (DW) code families is proposed. Enhanced double weight (EDW) codes possess ideal cross-correlation properties such as maximum cross correlation of 1 and a weight that can be any odd number greater than 1. It has been observed
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Improving BER Using RD Code for Spectral Amplitude Coding Optical CDMA Network

2009 International Conference on Computer Engineering and Technology, 2009
A new code for spectral-amplitude coding optical code-division multiple-access system is proposed called Random diagonal (RD) code. This code is constructed using code segment and data segment. One of the important properties of this code is that the cross correlation at data segment is always zero, which means that Phase Intensity Induced Noise (PIIN)
Hilal Adnan Fadhil, S.A. Aljunid, R. Badlishah Ahmad   +2 more
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Theoretical and practical capacity of OCDMA using spectral amplitude coding

SPIE Proceedings, 2005
In optical code division multiple access (OCDMA), the optical bandwidth is accessed simultaneously by multiple users, leading to intensity noise in photodetection. In this article we focus on spectral amplitude encoded CDMA for access networks. We examine efficient system architectures, practical implementations, compare the impact of different system ...
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Spectral Amplitude Coding (SAC)-OCDMA Network with 8DPSK

J. Opt. Commun., 2013
A. O. Aldhaibani, S. A. Aljunid, Hilal A. Fadhil, M. S. Anuar   +3 more
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Optical Code Construction of Balanced Weight Ideal Cross-Correlation Code for Spectral Amplitude Coding Optical CDMA Systems

Lecture Notes in Electrical Engineering, 2022
Teena Sharma
exaly