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Paper Abstract and Keywords
Presentation 2018-12-07 15:15
Error Rate Performance of Generalised Space Shift Keying Using a Position Sensitive Detector and a Number of LEDs
Kouki Kozakai, Kouji Ohuchi (Shizuoka Univ.) WBS2018-71 ITS2018-54 RCC2018-102
Abstract (in Japanese) (See Japanese page) 
(in English) GSSK (Generalised Space Shift Keying) is a modulation scheme used for visible light communications.
In GSSK, we use several LEDs as a light source in a transmitter, and we express transmitted
information by on-off state of the LEDs.
In other words, GSSK transmits information by the position of the lighting LEDs.
In GSSK, the receiver cannot distinguish LEDs when they are at the equidistant from the
To avoid this situation, we have to arrange LEDs carefully so that they can have a different
distance from the receiver.
This limits the arrangement of LEDs, and it becomes severe when increasing the number of LEDs.
In this paper, we will change the light receiving element from a PD (Photo Diode) to a PSD (Position Sensitive Detector) to ease the
The PSD is a device that can detect the center of gravity of incident light.
Thus, even if some LEDs are at equidistant from the receiver,
the center of gravity of incident light is different for each LED, and the receiver can
discriminate them by using the PSD.

We evaluated communication distance using the PSD and PD.
We also researched the BER by evaluating the case of changing the number of LEDs.

When using the PSD, we showed that we can distinguish the position of lighting LEDs in the case of equidistant between multiple light sources and receiver.

In this paper, we show that communication distance with the three LEDs is shorter by about 0.1m than that with two LEDs when proposed method achieves the same BER.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible light communication / Generalised Space Shift Keying / Position Sensitive Detector / / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 342, WBS2018-71, pp. 243-248, Dec. 2018.
Paper # WBS2018-71 
Date of Issue 2018-11-29 (WBS, ITS, RCC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF WBS2018-71 ITS2018-54 RCC2018-102

Conference Information
Committee WBS ITS RCC  
Conference Date 2018-12-06 - 2018-12-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyako Island Hirara Port Terminal Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Reliable Communication and Control, Radar and Sensing, etc. 
Paper Information
Registration To WBS 
Conference Code 2018-12-WBS-ITS-RCC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Error Rate Performance of Generalised Space Shift Keying Using a Position Sensitive Detector and a Number of LEDs 
Sub Title (in English)  
Keyword(1) Visible light communication  
Keyword(2) Generalised Space Shift Keying  
Keyword(3) Position Sensitive Detector  
1st Author's Name Kouki Kozakai  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Kouji Ohuchi  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Date Time 2018-12-07 15:15:00 
Presentation Time 25 
Registration for WBS 
Paper # IEICE-WBS2018-71,IEICE-ITS2018-54,IEICE-RCC2018-102 
Volume (vol) IEICE-118 
Number (no) no.342(WBS), no.343(ITS), no.344(RCC) 
Page pp.243-248 
#Pages IEICE-6 
Date of Issue IEICE-WBS-2018-11-29,IEICE-ITS-2018-11-29,IEICE-RCC-2018-11-29 

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