wireless optical communication systems book

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Ngày tải lên: 03/07/2014, 21:10

... MSSV:08520582 -TRƯƠNG VĂN VĨ MSSV:08520470 Sau đây là bài dịch chương II trong sách “Principles of Digital Communication Systems and Computer Networks” của nhóm em. Phần I – Các hệ thống truyền thông số (Digital ... trọng cho mỗi kỹ sư truyền thông. Tài liệu tham khảo C. E. Shannon. "A Mathematical Theory of Communication. " Bell System Technical Journal, Vol. 27, 1948. Tất cả các kỹ sư truyền thông ... Shannon đặt nền móng về lý thuyết thông tin năm 1948. Cuốn sách của ông “A Maththemathical Theroy of Communication ” (Một lý thuyết toán học của sự truyền thông tin) được xuất bản trong Tạp chí Bell...

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... of the resulting optical signal. Most digital lightwave systems employ OOK in combination with PCM. 1.3 Optical Communication Systems As mentioned earlier, optical communication systems differ ... Willner, Optical Fiber Communication Systems, Artec House, Norwood, MA, 1996. [38] R. Papannareddy, Introduction to Lightwave Communication Systems, Artec House, Nor- wood, MA, 1997. [39] K. Nosu, Optical ... limiting value, optical communication systems have the potential of carrying information at bit rates ∼1 Tb/s. It is this enormous potential bandwidth of optical communication systems that is...

Ngày tải lên: 24/12/2013, 01:16

... channel powers in optical communication systems are typically below 10 mW, SRS is not a limiting factor for single-channel lightwave systems. However, it affects the performance of WDM systems considerably; ... fiber-optic communications. Several books devoted entirely to optical fibers cover numerous advances made in their design and understanding [12]–[21]. This chapter focuses on the role of optical fibers as ... lightwave systems. It is often used for de- multiplexing individual channels when time-division multiplexing is used in the optical domain. It can also be used for wavelength conversion. FWM in optical...

Ngày tải lên: 24/12/2013, 01:16

... 1.55- µ m optical communication systems operating at bit rates of 2.5 Gb/s or more. DFB lasers are reliable enough that they have been used since 1992 in all transoceanic lightwave systems. 3.4.2 ... limit the performance of optical communication systems, especially when β 2 C > 0, where β 2 is the dispersion parameter and C is the chirp parameter. Even though optical pulses emitted from ... transverse modes. [85]. In the absence of fiber dispersion, MPN would be harmless for optical communication systems, as all modes would remain synchronized during transmis- sion and detection....

Ngày tải lên: 24/12/2013, 01:16

... 14. [5] B. L. Kasper, in Optical Fiber Telecommunications II, S. E. Miller and I. P. Kaminow, Eds., Academic Press, San Diego, CA, 1988, Chap. 18. [6] S. B. Alexander, Optical Communication Receiver ... G. Swartz, in Optical Fiber Telecommunications II, S. E. Miller and I. P. Kaminow, Eds., Academic Press, San Diego, CA, 1988, Chap. 20. [54] K. Kobayashi, in Optical Fiber Telecommunications ... nonetheless useful for optical communication systems simply because of their higher sensitivity. Receiver sensitivity is an important issue in the design of lightwave systems and is discussed...

Ngày tải lên: 24/12/2013, 01:16

... third-generation systems operating near 1.55 µ m and can exceed 100 (Tb/s)-km for the fourth-generation systems. 5.1.2 Distribution Networks Many applications of optical communication systems require ... 1993. [4] I. P. Kaminow and T. L. Koch, Eds., Optical Fiber Telecommunications III, Academic Press, San Diego, CA, 1997. [5] G. E. Keiser, Optical Fiber Communications, 3rd ed., McGraw-Hill, New ... Gnauck, in Optical Fiber Telecommunications II,S. E. Miller and I. P. Kaminow, Eds., Academic Press, San Diego, CA, 1988, Chap. 21. [2] S. E. Miller and I. P. Kaminow, Eds., Optical Fiber Telecommunications...

Ngày tải lên: 24/12/2013, 01:16

Ngày tải lên: 24/12/2013, 14:16

... Optic Communication Systems, 3rd Ed., Wiley, 2002. B. F. Jorgensen, B. Mikkelsen and C. J. Mahon, “Analysis of optical amplifier noise in co- herent optical communication systems with optical ... Digital Communications. According to the program of the workshop, the book is divided into four parts: Information and Communication Theory for Optical Communications. This first part examines optical ... other hand, this book, namely Optical Communications Theory and Techniques, is intended to be a collection of up-to-date papers dealing with the theoretical aspects of optical communications....

Ngày tải lên: 20/01/2014, 06:20

... the potential capabilities of spread- spectrum communication systems. Although direct-sequence systems greatly suppress interference, practical systems require channel codes to deal with the residual ... Probability Complex-Valued Quaternary Sequences 6.2 Systems with Random Spreading Sequences Direct-Sequence Systems with PSK Quadriphase Direct-Sequence Systems 6.3 Wideband Direct-Sequence Systems Multicarrier Direct-Sequence ... Field Long Nonlinear Sequences 2.3 Systems with PSK Modulation Tone Interference at Carrier Frequency General Tone Interference Gaussian Interference 2.4 Quaternary Systems 2.5 Pulsed Interference 2.6 Despreading...

Ngày tải lên: 20/01/2014, 06:20

... issues for long-haul systems employing a cascaded chain of optical amplifiers. 6.5.1 Optical Preamplification Optical amplifiers are routinely used for improving the sensitivity of optical receivers by ... example, ∆ ν g ∼5 THz for semiconductor optical amplifiers for which T 2 ∼60 fs. Amplifiers with a relatively large bandwidth are preferred for optical communication systems because the gain is then nearly ... limitation on all long-haul systems designed with a cascaded chain of optical amplifiers [123]–[126]. The physical origin of ASE-induced jitter can be understood by noting that optical amplifiers affect...

Ngày tải lên: 21/01/2014, 06:20

... Chapter 6 that with the advent of optical amplifiers, fiber losses are no longer a major limiting factor for optical communication systems. Indeed, mod- ern lightwave systems are often limited by the ... provided by the third-generation terrestrial systems operating near 1.55 µ m and using optical transmitters containing a distributed feedback (DFB) laser. Such systems generally use the existing fiber-cable ... terrestrial lightwave systems but is reduced to about 50 km for submarine systems. Because of cost considerations, most laboratory experiments use a fiber loop in which the optical signal is forced...

Ngày tải lên: 21/01/2014, 06:20

... to OTDM lightwave systems. 8.4.1 Channel Multiplexing In OTDM lightwave systems, several optical signals at a bit rate B share the same carrier frequency and are multiplexed optically to form ... Channel selection through a tunable optical filter. 8.2 WDM Components The implementation of WDM technology for fiber-optic communication systems re- quires several new optical components. Among them ... case in which a tunable optical filter is used to select a single channel among the N channels incident on it. If the optical filter is set to pass the mth channel, the optical power reaching the...

Ngày tải lên: 21/01/2014, 06:20

... is preserved quite well even after 416 CHAPTER 9. SOLITON SYSTEMS 9.2.4 Soliton Transmitters Soliton communication systems require an optical source capable of producing chirp- free picosecond ... into an optical bit stream in the RZ format [53]. Although optical pulses launched from such transmitters typically do not have the “sech” shape of a soliton, they can be used for soliton systems ... nonsoliton lightwave systems, remain the lasers of choice even for soliton systems. Early experiments on soliton transmission used the technique of gain switching for generating optical pulses of...

Ngày tải lên: 21/01/2014, 06:20

... Persoinick, Eds., Coherent Lightwave Communications, IEEE Press, Piscataway, NJ, 1990. [15] S. Betti, G. de Marchis, and E. Iannone, Coherent Optical Communication Systems, Wi- ley, New York, 1995. [16] ... 1995. [16] S. Ryu, Coherent Lightwave Communication Systems, Artec House, Boston, 1995. [17] F. Heismann, S. K. Korotky, and J. J. Veselka, in Optical Fiber Telecommunications III, Vol. B, I. P. ... important for long-haul systems using cascaded optical am- plifiers [111]. Even XPM effects become significant in coherent FSK systems [112]. 484 CHAPTER 10. COHERENT LIGHTWAVE SYSTEMS invariably occur...

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