Experimental demonstration of multiple-inputs multiple-outputs OFDM/OQAM visible light communications

Bangjiang Lin; Xuan Tang; Zabih Ghassemlooy; Chun Lin; Min Zhang

doi:10.1117/1.OE.56.10.106106

12 October 2017 Experimental demonstration of multiple-inputs multiple-outputs OFDM/OQAM visible light communications

Bangjiang Lin, Xuan Tang, Zabih Ghassemlooy, Chun Lin, Min Zhang

Author Affiliations +

Optical Engineering, Vol. 56, Issue 10, 106106 (October 2017). https://doi.org/10.1117/1.OE.56.10.106106

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.

Citation Download Citation

Bangjiang Lin, Xuan Tang, Zabih Ghassemlooy, Chun Lin, and 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

Received: 10 July 2017; Accepted: 21 September 2017; Published: 12 October 2017

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