نتایج جستجو برای: wavelength division multiple access wdma

تعداد نتایج: 1185732  

2002
Hong SHEN Yi PAN John SUM Susumu HORIGUCHI

This paper provides an overview on efficient algorithms for multicasting in optical networks supported by Wavelength Division Multiplexing (WDM) with limited wavelength conversion. We classify the multicast problems according to offline and on-line in both reliable and unreliable networks. In each problem class, we present efficient algorithms for multicast and multiple multicast and show their...

Journal: :IET Communications 2009
M. Ravi Kumar S. S. Pathak N. B. Chakrabarti

A code design algorithm for application in Multi-Dimensional Optical Code Division Multiple Access (MD-OCDMA) for asynchronous optical fibre communication is proposed. Two-dimensional (2-D) wavelength-time or space-time OCDMA and three-dimensional (3-D) space-wavelength-time OCDMA are subsets of MD-OCDMA. Some applications and the performance analysis of the algorithm in 2-D multipulse per row ...

Journal: :IEEE Trans. Computers 1993
Patrick W. Dowd Kalyani Bogineni Khaled A. Aly James A. Perreault

This paper introduces two hierarchical optical structures for processor interconnection and compares their performance through analytic models and discrete-event simulation. Both architectures are based on wavelength division multiplexing (WDM) which enables multiple multi-access channels to be realized on a single optical fiber. The objective of the hierarchical architectures is to achieve sca...

2008
Jing Chen Jianping Wang Hui Yu Ashwin Gumaste Si-Qing Zheng

Recently, a new WDM optical network infrastructure named SMART [1], which is capable of dynamically setting up, modifying, and tearing down optical connections, was proposed. The performance of SMART is determined by the performance of its hyperchannels, which are essentially optical buses or light-trails. Previously proposed MAC protocols for unidirectional optical buses can be used as distrib...

2015
Changsoon Choi Qing Wei Thorsten Biermann Wolfgang Kiess Kazuyuki Kozu

This invited paper describes about mobile wavelength division multiplexing (WDM) backhaul network designs for future radio access networks. First, it introduces mobile backhaul requirements to support LTE-Advanced and Beyond with emphasis on coordinated multipoints (CoMP) techniques. It primarily considers WDM passive optical networks (WDM-PON) as promising optical access technologies for mobil...

Journal: :journal of advances in computer research 2015
hamidreza alrezaamiri mehdi golsorkhtabaramiri masoud farmanbar hamed naeemaeiaali

a typical radio frequency identification system (rfid) includes one reader and a number of tags. the reader transmit to commands to the tags with interrogation radio signals, and tags receive the command and then respond with their identification. readers with interrogation signals can read tags’ responses. in rfid systems, when multiple tags respond to one reader simultaneously, tag collision ...

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