TY - JOUR
T1 - A Power Domain Sparse Code Multiple Access Scheme for Visible Light Communications
AU - Lin, Bangjiang
AU - Tang, Xuan
AU - Ghassemlooy, Zabih
N1 - Publisher Copyright:
© 2012 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - We propose a non-orthogonal multiple access (NOMA) scheme known as power domain sparse code multiple access (PD-SCMA) for visible light communications (VLC), which uses both the power and code domains for multi users signal transmission. The signal model and the transceiver of PD-SCMA VLC are investigated. We show by experimental demonstration that, PD-SCMA is a promising multiple access solution for VLC systems offering higher achievable sum rate compared with other NOMA schemes. PD-SCMA with 2 power domain multiplexed layers offers twice the total data rate compared with SCMA at the cost of reduced transmission distance, which is not a problem for VLC systems as the transmission distance can be increased using higher power light sources, high-gain optical concentrators and advanced receivers.
AB - We propose a non-orthogonal multiple access (NOMA) scheme known as power domain sparse code multiple access (PD-SCMA) for visible light communications (VLC), which uses both the power and code domains for multi users signal transmission. The signal model and the transceiver of PD-SCMA VLC are investigated. We show by experimental demonstration that, PD-SCMA is a promising multiple access solution for VLC systems offering higher achievable sum rate compared with other NOMA schemes. PD-SCMA with 2 power domain multiplexed layers offers twice the total data rate compared with SCMA at the cost of reduced transmission distance, which is not a problem for VLC systems as the transmission distance can be increased using higher power light sources, high-gain optical concentrators and advanced receivers.
KW - Visible light communications (VLC)
KW - non-orthogonal multiple access (NOMA)
KW - power domain sparse code multiple access (PD-SCMA)
UR - https://www.scopus.com/pages/publications/85078424734
U2 - 10.1109/LWC.2019.2941853
DO - 10.1109/LWC.2019.2941853
M3 - 文章
AN - SCOPUS:85078424734
SN - 2162-2337
VL - 9
SP - 61
EP - 64
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 1
M1 - 8839869
ER -