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The quadrature modulation of quaternion signals for capacity upgrade of high-speed fiber-optic wireless communication systems
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Paper Abstract

In this paper we propose novel modulation technique based of quaternion signals aimed at incrising the capacity of Radio-over-fiber (RoF) systems based on OFDM technology. The application of hypercomplex quaternion signals processing has already demonstrated many advantages over the conventional analytical signals. The mathematical and simulation models of the quaternion QPSK modulator and demodulator are presented. Next, the improved scheme for OFDM RoF system is provided taking into account the quaternion signal processing. Simulation and evaluation of the proposed models were carried out by transmitting the QQPSK signal over the RoF system with AWGN wireless channel. The obtained BER vs SNR results for proposed modulation technique were compared to conventional QPSK providing double channel capacity with a little degradation of the noise immunity for QQPSK technique.

Paper Details

Date Published: 24 June 2019
PDF: 7 pages
Proc. SPIE 11146, Optical Technologies for Telecommunications 2018, 111460C (24 June 2019); doi: 10.1117/12.2527414
Show Author Affiliations
Elizaveta P. Grakhova, Ufa State Aviation Technical Univ. (Russian Federation)
Guzel I. Abdrakhmanova, Ufa State Aviation Technical Univ. (Russian Federation)
Svyatoslav P. Shmidt, Ufa State Aviation Technical Univ. (Russian Federation)
Irina L. Vinogradova, Ufa State Aviation Technical Univ. (Russian Federation)
Albert Kh. Sultanov, Ufa State Aviation Technical Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 11146:
Optical Technologies for Telecommunications 2018
Vladimir A. Andreev; Anton V. Bourdine; Vladimir A. Burdin; Oleg G. Morozov; Albert H. Sultanov, Editor(s)

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