MIMO-diversity switching techniques for digital transmission in visible light communication

Lih Chieh Png; Long Xiao; Kiat Seng Yeo; Thin Sek Wong; Yong Liang Guan

doi:10.1109/ISCC.2013.6755008

MIMO-diversity switching techniques for digital transmission in visible light communication

Lih Chieh Png, Long Xiao, Kiat Seng Yeo, Thin Sek Wong, Yong Liang Guan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

In this work, we propose two decision techniques that interchange between MIMO and diversity schemes for improving shadowing and alignment problems. In a visible-light communication (VLC) system, the transmission nature can be of two types: (1) all LEDs transmit the same signal stream simultaneously; or (2) each LED transmits different parts of a signal stream independently. The MIMO-diversity technique detects and computes the transmitted signal power during reception and conditionally informs the transmitter to switch between Type (1) and Type (2) transmission. Two experimental models have been tested to show the feasibility of such a technique. In the first model, we constructed a full transceiver and uses a switch IC to switch between MIMO and diversity. The second model uses a microcontroller and software decision to switch between two COM ports, each of them dedicated to MIMO and diversity output respectively. Results suggest that shadowing and alignment problems commonly encountered in visible-light communication systems can be readily solved using these methods. A focusing equation has also been formulated to predict signal intensity more accurately. The focusing gap between the concentrator and the photodiode is taken into consideration during channel computation.

Original language	English
Title of host publication	2013 IEEE Symposium on Computers and Communications, ISCC 2013
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	576-582
Number of pages	7
ISBN (Print)	9781479937554
DOIs	https://doi.org/10.1109/ISCC.2013.6755008
Publication status	Published - 2013
Externally published	Yes
Event	18th IEEE Symposium on Computers and Communications, ISCC 2013 - Split, Croatia Duration: Jul 7 2013 → Jul 10 2013

Publication series

Name	Proceedings - IEEE Symposium on Computers and Communications
ISSN (Print)	1530-1346

Conference

Conference	18th IEEE Symposium on Computers and Communications, ISCC 2013
Country/Territory	Croatia
City	Split
Period	7/7/13 → 7/10/13

ASJC Scopus Subject Areas

Software
Signal Processing
General Mathematics
Computer Science Applications
Computer Networks and Communications

Access to Document

10.1109/ISCC.2013.6755008

Cite this

Png, L. C., Xiao, L., Yeo, K. S., Wong, T. S., & Guan, Y. L. (2013). MIMO-diversity switching techniques for digital transmission in visible light communication. In 2013 IEEE Symposium on Computers and Communications, ISCC 2013 (pp. 576-582). Article 6755008 (Proceedings - IEEE Symposium on Computers and Communications). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCC.2013.6755008

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title = "MIMO-diversity switching techniques for digital transmission in visible light communication",

abstract = "In this work, we propose two decision techniques that interchange between MIMO and diversity schemes for improving shadowing and alignment problems. In a visible-light communication (VLC) system, the transmission nature can be of two types: (1) all LEDs transmit the same signal stream simultaneously; or (2) each LED transmits different parts of a signal stream independently. The MIMO-diversity technique detects and computes the transmitted signal power during reception and conditionally informs the transmitter to switch between Type (1) and Type (2) transmission. Two experimental models have been tested to show the feasibility of such a technique. In the first model, we constructed a full transceiver and uses a switch IC to switch between MIMO and diversity. The second model uses a microcontroller and software decision to switch between two COM ports, each of them dedicated to MIMO and diversity output respectively. Results suggest that shadowing and alignment problems commonly encountered in visible-light communication systems can be readily solved using these methods. A focusing equation has also been formulated to predict signal intensity more accurately. The focusing gap between the concentrator and the photodiode is taken into consideration during channel computation.",

author = "Png, {Lih Chieh} and Long Xiao and Yeo, {Kiat Seng} and Wong, {Thin Sek} and Guan, {Yong Liang}",

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Png, LC, Xiao, L, Yeo, KS, Wong, TS & Guan, YL 2013, MIMO-diversity switching techniques for digital transmission in visible light communication. in 2013 IEEE Symposium on Computers and Communications, ISCC 2013., 6755008, Proceedings - IEEE Symposium on Computers and Communications, Institute of Electrical and Electronics Engineers Inc., pp. 576-582, 18th IEEE Symposium on Computers and Communications, ISCC 2013, Split, Croatia, 7/7/13. https://doi.org/10.1109/ISCC.2013.6755008

MIMO-diversity switching techniques for digital transmission in visible light communication. / Png, Lih Chieh; Xiao, Long; Yeo, Kiat Seng et al.
2013 IEEE Symposium on Computers and Communications, ISCC 2013. Institute of Electrical and Electronics Engineers Inc., 2013. p. 576-582 6755008 (Proceedings - IEEE Symposium on Computers and Communications).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Xiao, Long

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PY - 2013

Y1 - 2013

N2 - In this work, we propose two decision techniques that interchange between MIMO and diversity schemes for improving shadowing and alignment problems. In a visible-light communication (VLC) system, the transmission nature can be of two types: (1) all LEDs transmit the same signal stream simultaneously; or (2) each LED transmits different parts of a signal stream independently. The MIMO-diversity technique detects and computes the transmitted signal power during reception and conditionally informs the transmitter to switch between Type (1) and Type (2) transmission. Two experimental models have been tested to show the feasibility of such a technique. In the first model, we constructed a full transceiver and uses a switch IC to switch between MIMO and diversity. The second model uses a microcontroller and software decision to switch between two COM ports, each of them dedicated to MIMO and diversity output respectively. Results suggest that shadowing and alignment problems commonly encountered in visible-light communication systems can be readily solved using these methods. A focusing equation has also been formulated to predict signal intensity more accurately. The focusing gap between the concentrator and the photodiode is taken into consideration during channel computation.

AB - In this work, we propose two decision techniques that interchange between MIMO and diversity schemes for improving shadowing and alignment problems. In a visible-light communication (VLC) system, the transmission nature can be of two types: (1) all LEDs transmit the same signal stream simultaneously; or (2) each LED transmits different parts of a signal stream independently. The MIMO-diversity technique detects and computes the transmitted signal power during reception and conditionally informs the transmitter to switch between Type (1) and Type (2) transmission. Two experimental models have been tested to show the feasibility of such a technique. In the first model, we constructed a full transceiver and uses a switch IC to switch between MIMO and diversity. The second model uses a microcontroller and software decision to switch between two COM ports, each of them dedicated to MIMO and diversity output respectively. Results suggest that shadowing and alignment problems commonly encountered in visible-light communication systems can be readily solved using these methods. A focusing equation has also been formulated to predict signal intensity more accurately. The focusing gap between the concentrator and the photodiode is taken into consideration during channel computation.

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Png LC, Xiao L, Yeo KS, Wong TS, Guan YL. MIMO-diversity switching techniques for digital transmission in visible light communication. In 2013 IEEE Symposium on Computers and Communications, ISCC 2013. Institute of Electrical and Electronics Engineers Inc. 2013. p. 576-582. 6755008. (Proceedings - IEEE Symposium on Computers and Communications). doi: 10.1109/ISCC.2013.6755008

MIMO-diversity switching techniques for digital transmission in visible light communication

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