July 2010 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Semantic analysis of the use of “symbol” in IEEE 802.15.7 D2 Date Submitted: [6th July, 2010] Source: Joachim W. Walewski Company: Siemens AG Address: Otto-Hahn-Ring 6, Munich, Germany Voice: +49-89-636-45850 E-Mail: joachim.walewski (curly a) siemens.com Re: Response to LB57 Abstract: This document provides an overview of the use of the term “symbol” (related to CID T-6 in doc 10-681, latest revision). Purpose: To resolve CID T-6 of LB 57 Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15. Joachim W. Walewski, Siemens AG

Semantic analysis of the use of “symbol” in IEEE 802.15.7 D2 July 2010 Semantic analysis of the use of “symbol” in IEEE 802.15.7 D2 Joachim W. Walewski, Siemens AG Joachim W. Walewski, Siemens AG

July 2010 Background T-CID 6 of exact definition of the use of the term “symbol” in IEEE 802.15.7 This contribution reports on action items (1) – (3) in the recommended remedy Lots of the terminology of "symbol" are used in D2 draft. The exact definition for "symbol" in 802.15.7 standard is required. Add the exact definition of "symbol" in VLC to 3.1 or 3.2. Work in progress … 1) identify in the document where the term "symbol" is used 2) identify if symbol is taking on multiple meanings (overloaded) 3) define for each meaning "what is a symbol" for that particular usage 4) modify the text accordingly Assigned to Joachim to comply usages Joachim W. Walewski, Siemens AG

Current status Results listed in doc 10-0703/r0 July 2010 Current status Results listed in doc 10-0703/r0 Location in the document Sentence / Figure / … it is part of Where in the transceiver does it belong to? What is the meaning of symbol in each occurrence Classification of each occurrence with a short hand Joachim W. Walewski, Siemens AG

July 2010 Issues Documented 135 occurrences of “symbol” in text body of IEEE 802.15.7 D2 According to Acrobat Reader: 136 occurrences According to Foxit Reader: 134 occurrences Unsure about my analysis of 14 occurrences Could not specify the meaning of symbol in 10 instances Joachim W. Walewski, Siemens AG

Next steps Need help with aforementioned 24 unresolved cases Then: July 2010 Next steps Need help with aforementioned 24 unresolved cases Then: I prepare summary of my findings Frequency analysis and clustering Recommendations on how to resolve confliction disambiguation Joachim W. Walewski, Siemens AG