12 October 2017 Experimental demonstration of multiple-inputs multiple-outputs OFDM/OQAM visible light communications
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Abstract
We experimentally demonstrate a 2 × 2 optical multiple-inputs multiple-outputs (MIMO) visible light communications system based on the modified orthogonal frequency-division multiplexing/offset quadrature amplitude modulation scheme. The adjacent subcarrier frequency-domain averaging (ASFA) with the full-loaded (FL) and half-loaded (HL) preamble structures is proposed for demultiplexing and mitigating the intrinsic imaginary interference (IMI) effect. Compared with the conventional channel estimation (CE) method, ASFA offers improved transmission performance. With the FL method, we obtain more accurate MIMO CE to mitigate the IMI effect and the optical noise compared to the HL method.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Bangjiang Lin, Bangjiang Lin, Xuan Tang, Xuan Tang, Zabih Ghassemlooy, Zabih Ghassemlooy, Chun Lin, Chun Lin, Min Zhang, Min Zhang, } "Experimental demonstration of multiple-inputs multiple-outputs OFDM/OQAM visible light communications," Optical Engineering 56(10), 106106 (12 October 2017). https://doi.org/10.1117/1.OE.56.10.106106 . Submission: Received: 10 July 2017; Accepted: 21 September 2017
Received: 10 July 2017; Accepted: 21 September 2017; Published: 12 October 2017
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