Download or read book Feasibility Study of Implementing a Code Division Multiple Access Data Link Utilizing Fiber Optic Delay Lines written by John W. Andre and published by . This book was released on 1992 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Implementation of a Fiber optic Code division Multiple Access Data Link written by Kenneth J. McKown and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis was a continuance study on the feasibility of implementing a code division multiple access scheme which utilizes optical fiber delay lines. This report explores pseudo-orthogonal address codes with a periodic correlation properties for on-off signaling. The optical functions such as code sequence generation and correlation are performed by parallel optic delay lines acting as encoders and decoders. This experiment shows the desired auto-correlation and cross-correlation properties of these codes and their use in FO-CDMA. The results were recorded and analyzed. This scheme allows for a large population of simultaneously communicating users on a single network unit and allows enhanced flexibility in the scope of services that a local area server can provide.

Download or read book Implementation of a Fiber optic Code division Multiple Access Data Link written by Kenneth J. McKown and published by . This book was released on 1995 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis was a continuance study on the feasibility of implementing a code division multiple access scheme which utilizes optical fiber delay lines. This report explores pseudo-orthogonal address codes with a periodic correlation properties for on-off signaling. The optical functions such as code sequence generation and correlation are performed by parallel optic delay lines acting as encoders and decoders. This experiment shows the desired auto-correlation and cross-correlation properties of these codes and their use in FO-CDMA. The results were recorded and analyzed. This scheme allows for a large population of simultaneously communicating users on a single network unit and allows enhanced flexibility in the scope of services that a local area server can provide.

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.

Download or read book Optical Code Division Multiple Access written by Paul R. Prucnal and published by CRC Press. This book was released on 2018-10-03 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Code-division multiple access (CDMA) technology has been widely adopted in cell phones. Its astonishing success has led many to evaluate the promise of this technology for optical networks. This field has come to be known as Optical CDMA (OCDMA). Surveying the field from its infancy to the current state, Optical Code Division Multiple Access: Fundamentals and Applications offers the first comprehensive treatment of OCDMA from technology to systems. The book opens with a historical perspective, demonstrating the growth and development of the technologies that would eventually evolve into today's optical networks. Building on this background, the discussion moves to coherent and incoherent optical CDMA coding techniques and performance analysis of these codes in fiber optic transmission systems. Individual chapters provide detailed examinations of fiber Bragg grating (FBG) technology including theory, design, and applications; coherent OCDMA systems; and incoherent OCDMA systems. Turning to implementation, the book includes hybrid multiplexing techniques along with system examples and conversion techniques to connect networks that use different multiplexing platforms, state-of-the-art integration technologies, OCDMA network security issues, and OCDMA network architectures and applications, including a look at possible future directions. Featuring contributions from a team of international experts led by a pioneer in optical technology, Optical Code Division Multiple Access: Fundamentals and Applications places the concepts, techniques, and technologies in clear focus for anyone working to build next-generation optical networks.

Download or read book Code Division Multiple Access Local Area Network Communications Employing Fiber Optic Signal Processing Techniques written by Bruce A. Legge and published by . This book was released on 1993 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigated the feasibility of implementing a code- division multiple-access (CDMA) local area network (LAN) employing all-optical signal processing. A two-user unidirectional data link was built and successfully tested. This data link utilized variations of optical orthogonal code sequences (OOCs) generated by serially connected fiber optic delay lines and 2x2 couplers. A special feature of this network design was use of the same hardware to decode the signal as was used to encode the signal. A detailed review of the various coding techniques and the generation of spread spectrum signals was also performed. The results of the overall system design effort demonstrated that high-data-rate signal traffic can be supported by the network and in a more power efficient and affordable manner than previous designs.

Download or read book Code Division Multiple Access Local Area Network Communications Employing Fiber Optic Signal Processing Techniques written by Bruce A. Legge and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigated the feasibility of implementing a code- division multiple-access (CDMA) local area network (LAN) employing all-optical signal processing. A two-user unidirectional data link was built and successfully tested. This data link utilized variations of optical orthogonal code sequences (OOCs) generated by serially connected fiber optic delay lines and 2x2 couplers. A special feature of this network design was use of the same hardware to decode the signal as was used to encode the signal. A detailed review of the various coding techniques and the generation of spread spectrum signals was also performed. The results of the overall system design effort demonstrated that high-data-rate signal traffic can be supported by the network and in a more power efficient and affordable manner than previous designs.

Download or read book Compilation of Theses Abstracts October 1994 September 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Code Division Multiple Access Communication Networks written by Hongxi Yin and published by Springer Science & Business Media. This book was released on 2009-03-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical code division multiple access (OCDMA) communication network technology will play an important role in future optical networks, such as optical access and metropolitan area networks. OCDMA technology can also be applied to implement optical signal multiplexing and label switching on backbone networks. Optical Code Division Multiple Access Communication Networks - Theory and Applications introduces the code theory of OCDMA, the methods and technologies of OCDMA encoding and decoding, the theory and methods of analyzing OCDMA systems with various receiver models and realizing multiple-class services with different bit rates and QoS. In addition, OCDMA network architectures, protocols and applications are discussed in detail. The up-to-date theoretical and experimental results on OCDMA systems and networks are also reported. A large number of encoding/decoding examples and many analysis and simulation results of code and system performances are given. It is a valuable text and/or reference book for postgraduates majoring in telecommunication and photonics to obtain a well-knit theoretical foundation and for engineers in R&D and management of optical communications. Dr. Yin is an Associate Professor of the School of Electronics Engineering and Computer Science at Peking University, China, and was a Visiting Research Fellow of Optoelectronics Research Centre (ORC) at University of Southampton, UK. Dr. Richardson is a Professor for optical communications and Deputy Director of ORC at University of Southampton, UK, and is responsible for much of the ORC's fiber related activities.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Theses in the Pure and Applied Sciences written by Sade H Shafer and published by Springer Science & Business Media. This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cited in Sheehy, Chen, and Hurt . Volume 38 (thesis year 1993) reports a total of 13,787 thesis titles from 22 Canadian and 164 US universities. As in previous volumes, thesis titles are arranged by discipline and by university within each discipline. Any accredited university or college with a grad

Download or read book Government Reports Annual Index written by and published by . This book was released on 1993 with total page 1832 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Implementation of an Optical Code Division Multiple Access System Combined with Dense Wavelength Division Multiplexing written by Yongjun Zhang and published by Cuvillier Verlag. This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Secure Communications in High Speed Fiber Optical Networks Using Code Division Multiple Access CDMA Transmission written by S. Bond and published by . This book was released on 2004 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project is focused on the development of advanced components and system technologies for secure data transmission on high-speed fiber optic data systems. This work capitalizes on (1) a strong relationship with outstanding faculty at the University of California-Davis who are experts in high speed fiber-optic networks, (2) the realization that code division multiple access (CDMA) is emerging as a bandwidth enhancing technique for fiber optic networks, (3) the realization that CDMA of sufficient complexity forms the basis for almost unbreakable one-time key transmissions, (4) our concepts for superior components for implementing CDMA, (5) our expertise in semiconductor device processing and (6) our Center for Nano and Microtechnology, which is where the majority of the experimental work was done. Here we present a novel device concept, which will push the limits of current technology, and will simultaneously solve system implementation issues by investigating new state-of-the-art fiber technologies. This will enable the development of secure communication systems for the transmission and reception of messages on deployed commercial fiber optic networks, through the CDMA phase encoding of broad bandwidth pulses. CDMA technology has been developed as a multiplexing technology, much like wavelength division multiplexing (WDM) or time division multiplexing (TDM), to increase the potential number of users on a given communication link. A novel application of the techniques created for CDMA is to generate secure communication through physical layer encoding. Physical layer encoding devices are developed which utilize semiconductor waveguides with fast carrier response times to phase encode spectral components of a secure signal. Current commercial technology, most commonly a spatial light modulator, allows phase codes to be changed at rates of only 10's of Hertz ({approx}25ms response). The use of fast (picosecond to nanosecond) carrier dynamics of semiconductors, as opposed to field dynamics of liquid crystal molecules, enable phase codes at GHz rates. The semiconductor arrayed waveguide grating (AWG) is the building block of the encoder/decoder device. A monolithically integrated AWG is developed in this LDRD. Using this building block, the AWG can be integrated with phase modulators to create temporally varying phase codes; this allows superior physical level encoding technology. The breadth of this project is wide, covering a free space optic demonstration (large optic at the meter scale) of the encoding system. This was done as a proof-of-principal exercise and to investigate the time varying phase codes (''locks'' and ''keys''). Then a monolithically integrated AWG implemented at the millimeter was investigated. The mono lithically integrated AWG has the same functionality as the table top free space optic but reduced down in size to be easily embedded in fiber optic networks.

Download or read book Analysis and Optimization of Fiber Optic Code Division Multiple Access written by Mark Robert Dale and published by . This book was released on 1992 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Code Division Multiple Access written by Ken-Ichi Kitayama and published by . This book was released on 2014 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A comprehensive guide to optical fiber communications, from the basic principles to the latest developments in OCDMA for Next-Generation Fiber-to-the-Home (FTTH) systems. Part I starts off with the fundamentals of light propagation in optical fibers, including multiple access protocols, and their enabling techniques. Part II is dedicated to the practical perspectives of Next-Generation Fiber-to-the-Home (FTTH) technology. It covers the key building blocks of OCDMA, devices such as optical encoders and decoders, signal impairments due to noise, and data confidentiality, a unique property of OCDMA. This is followed by hybrid system architectures with TDM and WDM and practical aspects such as system cost, energy efficiency and long-reach PONs. Featuring the latest research, with cutting-edge coverage of system design, optical implementations, and experimental demonstrations in test beds, this text is ideal for students, researchers and practitioners in the industry seeking to obtain an up-to-date understanding of optical communication networks"--