Ultra‐Wideband Radio‐Over‐Optical‐Fibre Technologies

Ran, Moshe; Ezra, Y. Ben; Lembrikov, B. I.

doi:10.1002/9780470740125.ch24

Cited by 9 publications

(12 citation statements)

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“…The problem can be solved and the necessity of CP may be eliminated if a generic DFFT based CO-OFDM is replaced with a WPT-OFDM since WPs are localized both in time and frequency domains. The simulation results show that WPT-OFDM system provides a 500 km transmission distance at the FEC level of 2 21 0   without CP, with a small 5% GI. We proposed a novel hierarchical architecture of the WPT-OFDM system based on the separation of the low data rate and high data rate signal processing.…”

Section: Discussionmentioning

confidence: 96%

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All-Optical Signal Processing for High Spectral Efficiency (SE) Optical Communication

Ezra¹,

Lembrikov²,

Zadok³

et al. 2012

Optical Communication

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The need for CP can be avoided if the wavelet packet transform (WPT) is used in CO-OFDM systems instead of discrete Fourier Transform (DFT) and inverse DFT (IDFT) [13]. The sinusoidal functions are infinitely long in the time domain while wavelets have finite length being localized in time and in frequency domains [13]. Wavelet signal analysis can be a base for an effective computational algorithm which is faster and simpler than FFT [14]. Wavelets have been used in optical communications for time-frequency multiplexing and ultrafast image transmission [14]. A signal may be expanded in an orthogonal set of wavelet packets (WPs) as the basis functions, each channel occupies a wavelet packet (WP), and IDWPT/ DWPT are used at the transmitter and receiver, respectively [13].In this chapter, we consider the CO-OFDM based on WPT and its influence on the optical communication network performance. The chapter is constructed as follows. In Section 2, we review the coherent optical communication systems. In Section 3, we discuss high SE CO-OFDM system. In Section 4, we discuss the OFDM based on WPT and present the original results for the WPT-OFDM system performance. In Section 5, we present the original results concerning the simulations of the structure and operation mode of the novel passive components for all-optical signal processing based on Si-on-insulator (SOI) structure, and a novel hierarchical architecture of the 1Tb/s transmission system based on WPT-OFDM [15]. In Section 6, conclusions are presented.

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Section: Discussionmentioning

confidence: 96%

“…A 3db optical coupler (OC) is used that adds a  phase shift to either the signal field or the LO field between the two output ports. When the signal and LO fields are co-polarized, the electric fields 1,2 E incident on the upper and lower diodes are given by, respectively.…”

Section: Lomentioning

confidence: 99%

All-Optical Signal Processing for High Spectral Efficiency (SE) Optical Communication

Ezra¹,

Lembrikov²,

Zadok³

et al. 2012

Optical Communication

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“…From a commercial point of view, the high data rates are the most attractive feature of UWB systems for which speeds of over 100Mb/s have been demonstrated Ghawami (2005). There exist three main types of UWB technologies: impulse radio (IR UWB), direct sequence (DS UWB), and multi-band orthogonal frequency division multiplexing (MB OFDM) Ran (2009). IR UWB communication technique is essentially different from all other communication techniques because it is carrier free and uses for communication between transmitters and receivers very narrow radio frequency (RF) pulses generated from the UWB pulse generator, while traditional transmission systems transmit information by varying the power, frequency, and/or phase of a sinusoidal wave in a modulation process Kshetrimayum (2009.…”

Section: Impulse Radio (Ir) Ultra Wideband (Uwb) Communicationsmentioning

confidence: 99%

All Optical Generation and Processing of IR UWB Signals

Ezra¹,

Lembrikov²,

Ran³

et al. 2009

Optical Fiber New Developments

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“…The general model of a single-link communication consists of a transmitter, a channel, and a receiver where the channel is the medium through which the transmitted data reaches a receiver (Kshetrimayum, 2009). There exist three main types of UWB technologies: impulse radio (IR-UWB), direct sequence (DS-UWB), and multi-band OFDM (MB-OFDM) (Ran, 2009). In IR-UWB, information is carried by a set of narrow electromagnetic pulses.…”

Section: Uwb Ofdm Technologymentioning

confidence: 99%

“…The MB UWB OFDM technology combines the advantages of SE DMFs and OFDM. For this reason, recently, we proposed a new concept that combines the advantages of the high data rate wireless short-range communications based on UWB technologies, and in particular high SE, and the optical fiber communication technology (Ran, 2009). The fiber-optic communication systems can be applied in any area that requires transfer of information from one place to another (Agrawal, 2002).…”

Section: Uwb Ofdm Technologymentioning

confidence: 99%