منابع مشابه
Study of Wireless Optical CDMA LAN in Indoor Environment
In this paper we present a deeper view on the methods and the application considered in wireless Optical Code Division Multiple Access (OCDMA) systems. The high cost of reconfiguring and maintaining in wired networks makes wireless an economical and flexible alternative to wired system. The advantages of using infrared medium in LAN are noted. Properties of the wireless links are analyzed. Sinc...
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In this paper we present an in-depth review on the trends and the directions taken by the researchers worldwide in Optical Code Division Multiple Access (OCDMA) systems. We highlight those trends and features that are believed to be essential to the successful introduction of various OCDMA techniques in communication systems and data networks in near future. In particular we begin by giving a c...
متن کاملAnalysis of Indoor Wireless Infrared Optical CDMA LAN Using Prime Codes
-In wireless optical system, CDMA suits well for high bit rate systems where good security is needed and mobility is not important. It would be economical when compared to radio frequency band and much safer since there is no electromagnetic effect. Infrared systems are used for its widest bandwidth and are not affected by radio transmission. The advantage of the prime code and the security iss...
متن کاملHigh speed and secure optical CDMA-based passive optical networks
One bi-directional passive optical network (PON) based on optical code-division multiple access with interference elimination is proposed. By combining with wavelength division multiplexing (WDM) technique, the proposed scheme alleviates the noise arising during photo-detecting process in the PON. Therefore, the bit error rate performance is improved, which is demonstrated by the results of per...
متن کاملAll-optical LAN architectures based on Arrayed Waveguide Grating Multiplexers
The paper presents optical LAN topologies which are made possible using an Arrayed Waveguide Grating Multiplexer (AWGM) instead of a passive star coupler to interconnect stations in an all-optical LAN. Due to the collision-free nature of an AWGM it ooers the n-fold bandwidth compared to the star coupler. Virtual ring topologies appear (one ring on each wavelength) if the number of stations atta...
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ژورنال
عنوان ژورنال: Information Technology Journal
سال: 2006
ISSN: 1812-5638
DOI: 10.3923/itj.2006.673.678