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Display Light Pattern based Tx with SCAM

This project proposes a display light pattern based transmission method using SCAM to support high data rates on optical camera communication networks.

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Display Light Pattern based Tx with SCAM

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  1. Project: IEEE 802.15 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: +82-2-970-6431, FAX: +82-2-970-6123, E-Mail: chajs@seoultech.ac.kr Re: Response to Call For IEEE802.15.7r1 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 802.15. 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 802.15 Jaesang Cha, Seoul National Univ. of Science & Tech Slide 1

  2. SNUST 802.15.7r1 Display Light Pattern based Tx with SCAM Jaesang Cha [SNUST] Junghoon Lee [Dong Seoul University] Vinayagam Mariappan [SNUST] Jaesang Cha, Seoul National Univ. of Science & Tech Slide 2

  3. 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. 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. Introduction (2) Light Source (Bulb) Multiple Light Sources with various Color & Amplitude & Shape & Transparency Rx Tx • Tx : Sending coded data using Pattern light of Any Light Source • Pattern lights characterized by various Color & Amplitude & Shape & transparency Level • 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) / α(transparency ) State • No of Coded Levels (MxNxQxα) : 256 = 28 • 8 bit Symbol coding possible with 8/4/4/2 (Color/Amplitude/Shape) SCAM Scheme Jaesang Cha, Seoul National Univ. of Science & Tech

  7. SCAM Case Study 1 SCAM M State (Color Domain) : 8 Scalable Color Amplitude Modulation N State (Amplitude Domain) : 4 M x N x Q x α = 8 x 4 x 4 x 2 = 256 = 27 Q State (Shape Domain) : 4 α State (Transparency Domain) : 2 • SCAM coded by M(color)/N(amplitude)/Q(shape)/α(transparency) States • No of Coded Levels (MxNxQxα) : 256 = 28 • 8 bit Symbol coding possible with 8/4/4/2 (Color/Amplitude/Shape/transparency) SCAM Scheme Jaesang Cha, Seoul National Univ. of Science & Tech

  8. SCAM Case Study 2 *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 • 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 • 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

  11. 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 , Shape, and transparency factor Jaesang Cha, Seoul National Univ. of Science & Tech

  12. 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. Pattern Types of SCAM Various pattern by shape Various pattern by size 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 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 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 • 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 • Authentication via SCAM or SS-SCAM Jaesang Cha, Seoul National Univ. of Science & Tech

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

  19. 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

  20. 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 and transparency level 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

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