Download Advanced Optical Wireless Communication Systems by Shlomi Arnon, John Barry, George Karagiannidis, Robert PDF

By Shlomi Arnon, John Barry, George Karagiannidis, Robert Schober, Murat Uysal

Optical instant communications is a dynamic quarter of analysis and improvement. Combining primary thought with a wide evaluation, this booklet is a perfect reference for a person operating within the box, in addition to a precious advisor for self-study. It starts off via describing vital matters in optical instant concept, together with coding and modulation innovations for optical instant, instant optical CDMA conversation structures, equalization and Markov chains in cloud channels and optical MIMO platforms, in addition to explaining key matters in details concept for optical instant channels. the following part describes particular channels which may be present in optical instant purposes, resembling NLOS UV atmospheric scattering channels, underwater communique hyperlinks and a mix of hybrid RF/optical instant structures. the ultimate part describes purposes of optical instant know-how, akin to quantum encryption, seen mild communique, IR hyperlinks and sensor networks, with step by step instructions to aid lessen layout time and price.

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8 Heterogeneous optical networks (HONs) Internet traffic has continued its rapid growth over the last few years due to the increased popularity of the Internet. Other major contributors to this growth are the new applications that are emerging, and continuing the demand for higher bandwidths [16], such as VoIP, YouTube, IPTV, and HDTV. 5 Gb/s [76]. Such data rates are too high for conventional wireless LAN systems. 6 GHz range [77] or more recently proposed 60 GHz radio operating in 57–64 GHz range (in North America) [76].

6 4 6 8 10 12 14 16 18 20 22 24 26 4 8 12 16 Electrical SNR, E/N0 [dB] Electrical SNR, E/N0 [dB] (a) (b) 20 BERs of binary LDPC(6419,4794)-coded repetition MIMO: (a) uncoded case, and (b) coded case. (After ref. 7 for different MIMO configurations and different number of signal constellation points employing the Gray mapping rule. Once more, excellent BER performance improvement is obtained, about 23 dB for M = N = 4, Q = 4 over M = N = 1, Q = 4. 7(a). 75 performs comparable to a girth-8 regular QC-LDPC code of the same rate.

In the case of FSO communications, the MIMO concept is realized by employing multiple optical sources at the transmitter side and multiple detectors at the receiver side (this scheme can also be called multiple lasers – multiple detectors [MLMD]). In this section we describe LDPCcoded repetition MIMO [38],[39] as an efficient way to deal with strong atmospheric turbulence. Although this concept is analogous to the wireless MIMO concept in RF case, the underlying physics is different, and new optimal and sub-optimal configurations for this channel are needed.

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