Performance Analysis for Near-field Atmospheric Optical Communications - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Performance Analysis for Near-field Atmospheric Optical Communications write by Baris Ibrahim Erkmen. This book was released on 2003. Performance Analysis for Near-field Atmospheric Optical Communications available in PDF, EPUB and Kindle. Establishing, high data rate communication links over short distances via fiber-optic cables may prove costly and time consuming, particularly in urban areas. Through-the-air optical communication systems are a reliable and cost effective alternative for establishing high data rate links when the two terminals have a clear line-of-sight. Bad weather conditions, such as rain, snow or fog, degrade performance severely for such links. However, even in clear weather conditions, local refractive index fluctuations in the atmosphere known as atmospheric turbulence, may drastically impair performance. Most optical links are set up to operate in the far-field power transfer regime, in which diffraction spread is the dominant effect on the beam. Therefore, a very small portion of the beam is captured at the receiver, resulting in very weak power coupling between the transmitter and the receiver. However, it is also possible to establish geometries such that the link operates in the near-field regime, where, in absence of turbulence, it is possible to focus the beam onto the receiver with almost perfect power coupling. Work on performance of near-field atmospheric optical communication systems is scarce in existing literature, perhaps due to increased complexity in prescribed models. In this thesis, we analyze error probabilities of binary optical communication links operating in the near-field regime, utilizing on-off keying (OOK) or pulse position modulation (PPM) signaling techniques. We also obtain bounds on the capacity of a single-input, single-output (SISO) atmospheric optical communication link with a coherent-detection receiver operating in the near field.
Optical Fiber Communications and Devices
Optical Fiber Communications and Devices - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Optical Fiber Communications and Devices write by Moh Yasin. This book was released on 2012-02-01. Optical Fiber Communications and Devices available in PDF, EPUB and Kindle. This book is a collection of works dealing with the important technologies and mathematical concepts behind today's optical fiber communications and devices. It features 17 selected topics such as architecture and topologies of optical networks, secure optical communication, PONs, LANs, and WANs and thus provides an overall view of current research trends and technology on these topics. The book compiles worldwide contributions from many prominent universities and research centers, bringing together leading academics and scientists in the field of photonics and optical communications. This compendium is an invaluable reference edited by three scientists with a wide knowledge of the field and the community. Researchers and practitioners working in photonics and optical communications will find this book a valuable resource.
Performance Analysis of Optical Systems Using Approximate Phase Noise Statistics
Performance Analysis of Optical Systems Using Approximate Phase Noise Statistics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Performance Analysis of Optical Systems Using Approximate Phase Noise Statistics write by . This book was released on 1996. Performance Analysis of Optical Systems Using Approximate Phase Noise Statistics available in PDF, EPUB and Kindle.
On the Performance of Free-Space Optical Systems
On the Performance of Free-Space Optical Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook On the Performance of Free-Space Optical Systems write by Imran Shafique Ansari. This book was released on 2015-03-18. On the Performance of Free-Space Optical Systems available in PDF, EPUB and Kindle. Generalized fading has been an imminent part and parcel of wireless communications. It not only characterizes the wireless channel appropriately but also allows its utilization for further performance analysis of various types of wireless communication systems. Under the umbrella of generalized fading channels, a unified performance analysis of a free-space optical (FSO) link over generalized atmospheric turbulence channels that accounts for generalized pointing errors and both types of detection techniques (i.e. indirect modulation/direct detection (IM/DD) as well as heterodyne detection) is presented. Based on the fact that FSO links are cost-effective, license-free, and can provide even higher bandwidths compared to the traditional radio-frequency (RF) links, the performance analysis of a dual-hop relay system composed of asymmetric RF and FSO links is presented. This is complemented by the performance analysis of a dual-branch transmission system composed of a direct RF link and a dual-hop relay composed of asymmetric RF and FSO links.
Performance Analysis of Retrial Access Schemes for Optical Communication Networks with Slow and Fast Tuning
Performance Analysis of Retrial Access Schemes for Optical Communication Networks with Slow and Fast Tuning - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Performance Analysis of Retrial Access Schemes for Optical Communication Networks with Slow and Fast Tuning write by Walid M. Hamdy. This book was released on 1988. Performance Analysis of Retrial Access Schemes for Optical Communication Networks with Slow and Fast Tuning available in PDF, EPUB and Kindle.
