Research on VLC-MIMO System Based on Optical Generalized Spatial Modulation

Input signal	Antenna mapping bit	Antenna combination	Constellation mapping bit	Constellation modulation	Output signal
${(\begin{array}{l} 0 0 0 0 \\ 0 0 0 1 \end{array})}^{T}$	(0　0)	(1，2)	$(\begin{array}{l} 0 0 \\ 0 1 \end{array})$	$(\begin{array}{l} - 1 - 1 \\ - 1 1 \end{array})$	${(\begin{array}{l} - 1 - 1 0 0 \\ - 1 1 0 0 \end{array})}^{T}$
${(\begin{array}{l} 0 0 1 0 \\ 0 0 1 1 \end{array})}^{T}$	(0　0)	(1，2)	$(\begin{array}{l} 1 0 \\ 1 1 \end{array})$	$(\begin{array}{l} 1 - 1 \\ 1 1 \end{array})$	${(\begin{array}{l} 1 - 1 0 0 \\ 1 1 0 0 \end{array})}^{T}$
${(\begin{array}{l} 0 1 0 0 \\ 0 1 0 1 \end{array})}^{T}$	(0　1)	(1，3)	$(\begin{array}{l} 0 0 \\ 0 1 \end{array})$	$(\begin{array}{l} - 1 - 1 \\ - 1 1 \end{array})$	${(\begin{array}{l} - 10 - 1 0 \\ - 1 0 1 0 \end{array})}^{T}$
${(\begin{array}{l} 0 1 1 0 \\ 0 1 1 1 \end{array})}^{T}$	(0　1)	(1，3)	$(\begin{array}{l} 1 0 \\ 1 1 \end{array})$	$(\begin{array}{l} 1 - 1 \\ 1 1 \end{array})$	${(\begin{array}{l} 10 - 1 0 \\ 1 0 1 0 \end{array})}^{T}$
${(\begin{array}{l} 1 0 0 0 \\ 1 0 0 1 \end{array})}^{T}$	(1　0)	(1，4)	$(\begin{array}{l} 0 0 \\ 0 1 \end{array})$	$(\begin{array}{l} - 1 - 1 \\ - 1 1 \end{array})$	${(\begin{array}{l} - 1 0 0 - 1 \\ - 1 0 0 1 \end{array})}^{T}$
${(\begin{array}{l} 1 0 1 0 \\ 1 0 1 1 \end{array})}^{T}$	(1　0)	(1，4)	$(\begin{array}{l} 1 0 \\ 1 1 \end{array})$	$(\begin{array}{l} 1 - 1 \\ 1 1 \end{array})$	${(\begin{array}{l} 1 0 0 - 1 \\ 1 0 0 1 \end{array})}^{T}$
${(\begin{array}{l} 1 1 0 0 \\ 1 1 0 1 \end{array})}^{T}$	(1　1)	(2，3)	$(\begin{array}{l} 0 0 \\ 0 1 \end{array})$	$(\begin{array}{l} - 1 - 1 \\ - 1 1 \end{array})$	${(\begin{array}{l} 0 - 1 - 10 \\ 0 - 1 1 0 \end{array})}^{T}$
${(\begin{array}{l} 1 1 1 0 \\ 1 1 1 1 \end{array})}^{T}$	(1　1)	(2，3)	$(\begin{array}{l} 1 0 \\ 1 1 \end{array})$	$(\begin{array}{l} 1 - 1 \\ 1 1 \end{array})$	${(\begin{array}{l} 0 1 - 10 \\ 0 1 1 0 \end{array})}^{T}$

Table 2. Transmission rate, spectral efficiency and ML complexity of OGSM schemes with different modulation modes

View table

Table 2. Transmission rate, spectral efficiency and ML complexity of OGSM schemes with different modulation modes

Modulation	Transmission rate /(bit·s^－1)	Spectral efficiency /(bit·s^－1·Hz^－1)	ML complexity
OGSM-BPSK	$⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ + N_{a}$	$⌊ {log}_{2} (C_{N_{t}}^{N_{a}} \cdot 2^{N_{a}}) ⌋$	$⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ \cdot N_{a} \cdot N_{c} M^{N_{a}}$
OGSM-PAM	$⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ + 2 N_{a}$	$2 ⌊ {log}_{2} (C_{N_{t}}^{N_{a}} \cdot 4^{N_{a}}) ⌋$	$2 ⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ \cdot N_{a} \cdot N_{c} M^{N_{a}}$
OGSM-QPSK	$⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ + 2 N_{a}$	$2 ⌊ {log}_{2} (C_{N_{t}}^{N_{a}} \cdot 4^{N_{a}}) ⌋$	$2 ⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ \cdot N_{a} \cdot N_{c} M^{N_{a}}$
OGSM-QAM	$⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ + 2 N_{a}$	$2 ⌊ {log}_{2} (C_{N_{t}}^{N_{a}} \cdot 4^{N_{a}}) ⌋$	$2 ⌊ {log}_{2} C_{N_{t}}^{N_{a}} ⌋ \cdot N_{a} \cdot N_{c} M^{N_{a}}$

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Li Zhao, Hao Wang, Feng Zhang. Research on VLC-MIMO System Based on Optical Generalized Spatial Modulation[J]. Chinese Journal of Lasers, 2022, 49(23): 2306001

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Paper Information

Category: Fiber optics and optical communication

Received: Jan. 17, 2022

Accepted: Apr. 14, 2022

Published Online: Nov. 21, 2022

The Author Email: Wang Hao (2653835264@qq.com)

DOI:10.3788/CJL202249.2306001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology