Experimental evaluation of an OFDM-PWM-based X-ray communication system | Zendy

Wenxuan Chen | Zendy; Yunpeng Liu | Zendy; Xiaobin Tang | Zendy; Junxu Mu | Zendy; Sheng Lai | Zendy

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Experimental evaluation of an OFDM-PWM-based X-ray communication system

Author(s) -

Wenxuan Chen,

Yunpeng Liu,

Xiaobin Tang,

Junxu Mu,

Sheng Lai

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.415291

Subject(s) - orthogonal frequency division multiplexing , bit error rate , optics , pulse width modulation , modulation (music) , physics , noise (video) , channel (broadcasting) , multiplexing , computer science , electronic engineering , voltage , telecommunications , acoustics , engineering , quantum mechanics , artificial intelligence , image (mathematics)

We experimentally demonstrate an improved orthogonal frequency division multiplexing (OFDM) into the pulse width modulation (PWM) scheme for the X-ray communication (XCOM). The scheme is insensitive to the nonlinearity of the grid-controlled X-ray tube with switching 'on' and 'off' between two points. The dependence of this system's bit-error-rate (BER) performances on the data rates and the working parameters including the anode voltage and filament current of the grid-controlled X-ray tube are studied. The OFDM-PWM scheme reaches the data rate of 360 kbps at a BER of the forward error correction threshold of 3.8 × 10 -3 over a 5 cm air channel. In addition, an experiment aided by density-based spatial clustering of applications with noise nonlinear compensation is carried out, and the results demonstrate the improvements in Q-factor by 0.62 dB.

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