Massive MIMO-OFDM indoor visible light communication system downlink architecture design
Proceedings of SPIE(2014)
摘要
Multiple-input multiple-output 9MIMO) technique is now used in most new broadband communication system, and orthogonal frequency division multiplexing 9OFDM) is also utilized within current 4th generation 94G) of mobile telecommunication technology. With MIMO and OFDM combined, visible light communication 9VLC) 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 9EE) and spectral efficiency 9SE) 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 9SBS) 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.
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关键词
Multiple-input multiple-output (MIMO),visible light communication (VLC),massive MIMO-OFDM VLC system,energy efficiency (EE),spectral efficiency (SE),semispherical beehive structure (SBS) receiver
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