Open AccessPerformance evaluation and comparison of spatial modulation and non‐DC MIMO m ‐CAP techniques in indoor VLC system
Author(s) -
Nassiri Mahdi,
Ashouri Saeed,
Baghersalimi Gholamreza,
Ghassemlooy Zabih
Publication year - 2019
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2018.5076
Subject(s) - mimo , visible light communication , modulation (music) , electronic engineering , computer science , physics , telecommunications , optoelectronics , engineering , acoustics , channel (broadcasting) , light emitting diode
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.