Performance evaluation and comparison of spatial modulation and non-DC MIMO m-CAP techniques in an indoor VLC system

Baghersalimi, Gholamreza, Nassiri, Mahdi, Ashouri, Saeed and Ghassemlooy, Zabih (2019) Performance evaluation and comparison of spatial modulation and non-DC MIMO m-CAP techniques in an indoor VLC system. IET Optoelectronics, 13 (6). pp. 281-287. ISSN 1751-8768

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Abstract

Here, the authors propose and apply two novel schemes of multi-band carrierless amplitude and phase ( m -CAP) modulation for spatial modulation (SM)-based visible light communications (VLC) systems. In SM, both spatial and signal constellation are utilised to improve the performance of the m -CAP system. Here, they have adopted the non-DC m -CAP which is a power efficient technique with no DC-bias. The bit error rate (BER) performance and the spectral efficiency of the proposed systems are compared with single-input single-output (SISO) and multiplexing multiple-input multiple-output (MIMO) m -CAP systems. Results demonstrate that non-DC m -CAP, with the same spectral efficiency as that of SISO m -CAP, outperforms other schemes in terms of BER due to its power efficiency; however, a higher spectral efficiency can be achieved by the SM-MIMO m -CAP scheme.

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