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Proceedings Paper

Impact of modulation index on transmission performance of millimeter wave multiband OFDM ultra-wide-band wireless signal over fiber system
Author(s): Mohmoud Mohamed; Xiupu Zhang; Bouchaib Hraimel; Ke Wu
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Paper Abstract

Performance of millimeter-wave (mm-wave) multi-band orthogonal frequency division multiplexing (MB-OFDM) ultrawideband (UWB) signal over fiber transmission system is investigated considering impact of modulation index (MI). Experiments are conducted to verify our theoretical analysis and good agreement is obtained. In this work, we propose an optical frequency quadrupling technique using two cascaded Mach-Zehnder modulators (MZMs) biased at quadrature and driven by the same local oscillator frequency but with 1800 phase shift between the two MZMs. We demonstrate 30GHz mm-wave wireless that carries three-bands OFDM UWB signals, and error vector magnitude is used to analyze the transmission quality. It is found that the EVM decreases from ~-13.63 to -18.9 dB when increasing the LO modulation index (MI) from 66 to ~117%.

Paper Details

Date Published: 24 October 2012
PDF: 6 pages
Proc. SPIE 8412, Photonics North 2012, 84120S (24 October 2012); doi: 10.1117/12.970377
Show Author Affiliations
Mohmoud Mohamed, Benghazi Univ. (Libyan Arab Jamahiriya)
Xiupu Zhang, Concordia Univ. (Canada)
Bouchaib Hraimel, Concordia Univ. (Canada)
Ke Wu, Ecole Polytechnique de Montréal (Canada)

Published in SPIE Proceedings Vol. 8412:
Photonics North 2012
Jean-Claude Kieffer, Editor(s)

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