Massive MIMO-OFDM indoor visible light communication system downlink architecture design

Tian Lang; Zening Li; Gang Chen

doi:10.1117/12.2064017

7 October 2014 Massive MIMO-OFDM indoor visible light communication system downlink architecture design

Tian Lang, Zening Li, Gang Chen

Proceedings Volume 9224, Laser Communication and Propagation through the Atmosphere and Oceans III; 92240A (2014) https://doi.org/10.1117/12.2064017
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Multiple-input multiple-output (MIMO) technique is now used in most new broadband communication system, and orthogonal frequency division multiplexing (OFDM) is also utilized within current 4^th generation (4G) of mobile telecommunication technology. With MIMO and OFDM combined, visible light communication (VLC) system’s diversity gain is increase, yet system capacity for dispersive channels is also enhanced. Moreover, with the emerging massive MIMO-OFDM VLC system, there are significant advantages than smaller systems’ such as channel hardening, further increasing of energy efficiency (EE) and spectral efficiency (SE) based on law of large number. This paper addresses one of the major technological challenges, system architecture design, which was solved by semispherical beehive structure (SBS) receiver and so that diversity gain can be identified and applied in Massive MIMO VLC system. Simulation results shows that the proposed design clearly presents a spatial diversity over conventional VLC systems.

Citation Download Citation

Tian Lang, Zening Li, and Gang Chen "Massive MIMO-OFDM indoor visible light communication system downlink architecture design", Proc. SPIE 9224, Laser Communication and Propagation through the Atmosphere and Oceans III, 92240A (7 October 2014); https://doi.org/10.1117/12.2064017

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