Advanced modulation and precoding techniques for OFDM based Radio-over-fiber systems operating in W-band

Elizaveta P. Grakhova; Ivan K. Meshkov; Arsen A. Ishmiyarov; Guzel I. Abdrakhmanova; Irina L. Vinogradova; Albert Kh. Sultanov; Azat R. Gizatulin

doi:10.1117/12.2527190

24 June 2019 Advanced modulation and precoding techniques for OFDM based Radio-over-fiber systems operating in W-band

Elizaveta P. Grakhova, Ivan K. Meshkov, Arsen A. Ishmiyarov, Guzel I. Abdrakhmanova, Irina L. Vinogradova, Albert Kh. Sultanov, Azat R. Gizatulin

Author Affiliations +

Proceedings Volume 11146, Optical Technologies for Telecommunications 2018; 1114617 (2019) https://doi.org/10.1117/12.2527190
Event: XVI International Scientific and Technical Conference on Optical Technologies in Telecommunications, 2018, Ufa, Russian Federation

Abstract

In this paper we present advanced modulation and coding techniques for telecommunication systems based on Orthogonal Frequency Division Multiplexing and Radio-over-fiber technologies operating in the subteraherz frequency range 75-110 GHz (W-band). The scheme for the Radio-over-fiber communication system based on full-optical frequency upconversion, and detailed description of the W-band wireless channel are presented. As a result, the main factors affecting the quality of the transmitted radio signal are identified, against which the developed modulation formats are aimed. Improving the efficiency of the Radio-over-fiber system is achieved in two stages: by reducing the interchannel interference due to the windowing of received signal, and reducing the peak-to-average power ratio by precoding the subcarrier frequencies of the group spectrum; by increasing the signal-to-noise ratio when using constellation rotation technique. Obtained simulation results showed that application of the proposed advanced modulation and precoding techniques in Radio-over-fiber systems provides the improvement of energy efficiency and noise immunity.

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Elizaveta P. Grakhova, Ivan K. Meshkov, Arsen A. Ishmiyarov, Guzel I. Abdrakhmanova, Irina L. Vinogradova, Albert Kh. Sultanov, and Azat R. Gizatulin "Advanced modulation and precoding techniques for OFDM based Radio-over-fiber systems operating in W-band", Proc. SPIE 11146, Optical Technologies for Telecommunications 2018, 1114617 (24 June 2019); https://doi.org/10.1117/12.2527190

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KEYWORDS

Orthogonal frequency division multiplexing

Signal attenuation

Modulation

Radio over Fiber

Non-line-of-sight propagation

Signal processing

Signal to noise ratio

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