Powerline Carrier (PLC) Communication Systems

... 3.4 Powerline Networking In the powerline carrier (PLC) communication systems, the powerline is used not only used for energy transmission, but also is used as a medium for data communication Powerline ... "Power Line Carrier (PLC) Communication Systems" and goal of the project is to make a research study with a report and presentation on the existing powerline...

Ngày tải lên: 06/11/2016, 15:40

... requires high speed data communication within data-centers and high performance computers [3] The optical communication systems can be divided into two categories based on their detection method One ... that employ optical fibers for information transmission The carrier frequencies for optical communication systems are in the range of 100 THz which is the visibl...

Ngày tải lên: 12/09/2015, 09:28

... đặc biệt để khắc phục ảnh hưởng nhiễu Hai khía cạnh đưa Shannon báo “A Maththemathical Theroy of Communication xuất năm 1948 Bell System Technical Journal - nơi đưa lý thuyết thông tin Shannon ... định lý quan trọng cho kỹ sư truyền thông Tài liệu tham khảo C E Shannon "A Mathematical Theory of Communication. " Bell System Technical Journal, Vol 27, 1948 Tất kỹ sư truyền thông phải đọc...

Ngày tải lên: 18/09/2012, 10:13

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Ngày tải lên: 12/12/2013, 04:15

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Ngày tải lên: 20/12/2013, 19:15

... 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 in ... communication systems currently use optical fibers, the commonly used term for them is fiber -optic communication systems The term lightwave system is also sometimes used for fiber...

Ngày tải lên: 24/12/2013, 01:16

... low-loss region of optical fibers that is of interest for fiber -optic communication systems In general, the relation between P and E can be nonlinear Although the nonlinear effects in optical fibers ... much an optical pulse would broaden on propagation inside the fiber In some optical communication systems, the frequency spread ∆ω is determined by the range of wavelengths ∆λ emitted by...

Ngày tải lên: 24/12/2013, 01:16

... active layer with x = 0.1 Optical sources based on GaAs typically operate in the range 0.81–0.87 µ m and were used in the first generation of fiber -optic communication systems As discussed in Chapter ... 1.0–1.65 µ m that includes the region 1.3–1.6 µ m important for optical communication systems The fabrication of semiconductor optical sources requires epitaxial growth of multiple la...

Ngày tải lên: 24/12/2013, 01:16

... are 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 ... in Optical Fiber Telecommunications I, S E Miller and A G Chynoweth, Eds., Academic Press, San Diego, CA, 1979, Chap 18 [3] R G Smith and S D Personick, in Semiconductor Devices for Optical...

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 ... constitute a basic element of all communication systems, including LANs, MANS, and other distribution networks 5.2 Design Guidelines The design of fiber -optic communication syst...

Ngày tải lên: 24/12/2013, 01:16

Ngày tải lên: 24/12/2013, 14:16

... in optical communication systems, an optical amplifier should have Fn as low as possible 6.1.4 Amplifier Applications Optical amplifiers can serve several purposes in the design of fiber -optic communication ... applications of optical amplifiers are discussed in Chapter devoted to WDM lightwave systems CHAPTER OPTICAL AMPLIFIERS 232 Figure 6.3: Three possible applications of optical ampl...

Ngày tải lên: 21/01/2014, 06:20

... lightwave systems operating at 2.5 Gb/s are limited to L ≈ 42 km Indeed, such systems use electronic regenerators, spaced apart by about 40 km, and cannot benefit from the availability of optical ... splitter at the receiver splits the received optical signal into several branches Fiber -optic delay lines introduce variable delays in different branches The optical signal in each branch is...

Ngày tải lên: 21/01/2014, 06:20

... Channel selection through a tunable optical filter 8.2 WDM Components The implementation of WDM technology for fiber -optic communication systems requires several new optical components Among them are ... tunable add–drop optical filters, and add–drop multiplexers CHAPTER MULTICHANNEL SYSTEMS 354 Figure 8.17: Schematic of an optical cross-connect based on optical switches 8.2.6 Optical C...

Ngày tải lên: 21/01/2014, 06:20