1. September 2009doc.: IEEE 802.15-09-0117-00-0007
2/23/2019<month year>
<month year>
doc.: IEEE
January 2016
Project: IEEE Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: Display Light Pattern based Tx with SCAM
Date Submitted: 10 January, 2016
Source: Jaesang Cha, Junghoon Lee, Vinayagam Mariappan [SNUST]
Address : Seoul National University of Science & Technology [SNUST], Seoul, Korea
Voice: , FAX: ,
Re: Response to Call For IEEE r1 Proposal on November 2015
Abstract: Display Light Pattern based Tx with SCAM is proposed
Purpose: CFP Response
Notice: This document has been prepared to assist the IEEE It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by IEEE
Slide 1
Jaesang Cha, Seoul National Univ. of Science & Tech
<author>, <company>

2. September 2009doc.: IEEE 802.15-09-0117-00-0007
2/23/2019<month year>
<month year>
doc.: IEEE
January 2016
SNUST r1 Display Light Pattern based Tx with SCAM
Jaesang Cha [SNUST]
Junghoon Lee [Dong Seoul University]
Vinayagam Mariappan [SNUST]
Slide 2
Jaesang Cha, Seoul National Univ. of Science & Tech
<author>, <company>

3. Contents Introduction SCAM SCAM Tx / Rx Process
2/23/2019<month year>
January 2016
Contents
Introduction
SCAM
SCAM Tx / Rx Process
SS-SCAM Tx / Rx Process
Distance Adaptive Bitrate Control
Proposed Angle Free & Distance Adaptive
Pattern Types of SCAM
Adaptive Transmission Throughput on the Display
Frame rate Adaptive Transmission
Application of SCAM using App’s ICON
Applications for Authentication, High Rate OCC and LBS
Conclusion
Jaesang Cha, Seoul National Univ. of Science & Tech.

4. January 2016
Introduction (1)
Display adaptive Color & Pattern light coded data transmission for Display- Camera based communication Link
Proposes the Rx Distance adaptive Color & Pattern based coding method to support high data rate on OCC
Used in Displays, Signage, and Smart Device Displays
Forms High data rate short range communication network without network infrastructure
Display adaptive Color & Pattern Method using Displays and Cameras of Smart Devices could be a promising high data rate solution for OWC
Jaesang Cha, Seoul National Univ. of Science & Tech

5. January 2016
Introduction (2)
Light Source (Bulb)
Multiple Light Sources
with various Color & Amplitude & Shape Rx Tx
Tx : Sending coded data using Pattern light of Any Light Source
Pattern lights characterized by various Color & Amplitude & Shape
Rx : Smart Device image sensor(Camera)
Jaesang Cha, Seoul National Univ. of Science & Tech

6. SCAM SCAM coded by M(color)/N(amplitude)/Q(shape) State
January 2016
SCAM
SCAM coded by M(color)/N(amplitude)/Q(shape) State
No of Coded Levels (MxNxQ) : 128 = 27
7 bit Symbol coding possible with 8/4/4(Color/Amplitude/Shape) SCAM Scheme
Jaesang Cha, Seoul National Univ. of Science & Tech

7. SCAM SCAM Case Study 1 M State (Color Domain) : 8 Scalable
January 2016
SCAM Case Study 1
SCAM
M State (Color Domain) : 8
Scalable
Color
Amplitude
Modulation
N State (Amplitude Domain) : 4
M x N x Q =
8 x 4 x 4 = 128 = 27
Q State (Shape Domain) : 4
SCAM coded by M(color)/N(amplitude)/Q(shape) States
No of Coded Levels (MxNxQ) : 128 = 27
7 bit Symbol coding possible with 8/4/4(Color/Amplitude/Shape) SCAM Scheme
Jaesang Cha, Seoul National Univ. of Science & Tech

8. January 2016
SCAM Case Study 2
SCAM
M x N x Q x α*
Bit
M=2, N=2, Q=2, α =2
16 = 24 4
M=2, N=4, Q=2, α =2
32 = 25 5
M=4, N=2, Q=4, α =2
64 = 26 6
M=8, N=4, Q=2, α =2
128 = 27 7
M=8, N=4, Q=4, α =2
256 = 28 8
*M : Color Domain / N : Amplitude Domain
Q : Shape Domain / α : transparency Domain
SCAM Coded Example
SCAM is able to expand a Domain size and add a transparency or blinking domain
Jaesang Cha, Seoul National Univ. of Science & Tech

9. Proposed SCAM based Tx/Rx Structure
January 2016
Proposed SCAM based Tx/Rx Structure
SCAM proposed to enhance OCC data throughputs and to mitigate the Color illumination Interferences
Improved for higher Data Rates
Operated in Low Error Rates (BER < 10-6)
Jaesang Cha, Seoul National Univ. of Science & Tech

10. Proposed SS-SCAM Tx /Rx Structure
2/23/2019<month year>
January 2016
Proposed SS-SCAM Tx /Rx Structure
SS-SCAM proposed to enhance secure OCC data throughput
Mitigate the Single Color illumination Inferences
Allows User Specific data transfer
Improved for higher Data Rates
Operated in Low Error Rates (BER < 10-6)
Jaesang Cha, Seoul National Univ. of Science & Tech
<author>, <company>

11. Distance Adaptive Bitrate Control
January 2016
Distance Adaptive Bitrate Control 1m 2m 3m 4m
Color, Amplitude and shape factor is Scaled according to an Rx Distance
Adaptive 2D code (light) patterns are generated based on Color, Amplitude and Shape factor
Jaesang Cha, Seoul National Univ. of Science & Tech

12. Proposed ‘Angle Free’ and ‘Distance Adaptive’
January 2016
Proposed ‘Angle Free’ and ‘Distance Adaptive’
SCAM & SS-SCAM are available without angle and distance limitations
Jaesang Cha, Seoul National Univ. of Science & Tech

13. January 2016
Pattern Types of SCAM
Various pattern by size
Various pattern by shape
Various pattern by distance
SCAM Structure
It’s able to use variety pattern types for SCAM & SS-SCAM
Jaesang Cha, Seoul National Univ. of Science & Tech

14. Adaptive Transmission Throughput on the Display
January 2016
Adaptive Transmission Throughput on the Display
Normal Display
Expand Wide Vision(For UHD or more)
According to Display Size, throughput and Scaling factor of data could be changed
Adaptive Transmission throughput on the Display
Jaesang Cha, Seoul National Univ. of Science & Tech

15. Frame rate Adaptive Transmission
January 2016
Frame rate Adaptive Transmission
Case 1 (15fps)
Case 2 (30fps)
Multiple frame Rate Coexistence on the Display
According to various frame rate, adaptive frame rate transmission on the pattern is available
Jaesang Cha, Seoul National Univ. of Science & Tech

16. Application of SCAM using App’s ICON
January 2016
Application of SCAM using App’s ICON
Smart Device APP’S ICON color change and blinking
Smart Device App’s ICON also be a Color code Pattern light
Jaesang Cha, Seoul National Univ. of Science & Tech

17. Application for Authentication
January 2016
Application for Authentication
Authentication via SCAM or SS-SCAM
Jaesang Cha, Seoul National Univ. of Science & Tech

18. Applications for High rate OCC & LBS
January 2016
Applications for High rate OCC & LBS
High rate OCC
Display signage
LBS information
High rate OCC and LBS Service via SCAM or SS-SCAM
Jaesang Cha, Seoul National Univ. of Science & Tech

19. September 2009doc.: IEEE 802.15-09-0117-00-0007
2/23/2019<month year>
September 2009doc.: IEEE
January 2016
BER
Simulation Scenario
Block Size : 50x50
Tx : Multi array LED light
Rx : Smartphone Camera
Distance : 2m in order of 25 cm
When distance increases the Receiver detecting color fails due to visibility on color changes due to illumination
Jaesang Cha, Seoul National Univ. of Science & Tech
<author>, <company>

20. September 2009doc.: IEEE 802.15-09-0117-00-0007
2/23/2019<month year>
January 2016
Conclusion
We Proposed Display pattern based Tx with SCAM
SCAM and SS-SCAM are proposed for higher data rate OCC
Scalable multi frame rate transmission on the multiple light sources specified by various color, amplitude and shapes is possible
Asynchronous Mode supported
Application usage scenario for Authentication, LBS, and high data rate OCC, etc. is addressed
Jaesang Cha, Seoul National Univ. of Science & Tech
<author>, <company>