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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [J acksonville-css-comment-resolution-thursday ] Date Submitted: [18.05.2006] Source: Rainer Hach Company: Nanotron Technologies Address: Alt-Moabit 61, 10555 Berlin, Germany

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Submission Title: [Jacksonville-css-comment-resolution-thursday]

Date Submitted: [18.05.2006]

Source:Rainer Hach

Company: Nanotron Technologies

Address:Alt-Moabit 61, 10555 Berlin, Germany

Voice: +49 30 399 954 207

Re: []

Abstract: []

Purpose: []

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.

Hach, Nanotron

remaining comments addressing the css coexisting information 15 06 0214 00 004a
Remaining comments addressing the CSS coexisting information (15-06-0214-00-004a)
  • CID 136 Accept in principle: Stay with the 1% duty cyle but add that “Under certain conditions duty cycle can go up to 10%“
  • CID 139 Accept in principle. Add more information on this. Reasonable numbers for 11b/g are: 1500 bytes, 50% duty cycle (b:5.5Mbs, g:22Mps)
  • CID 140 Accept in principle.The analysis between BT and CSS will be revised under the assumption that both systems arw fast hoppers and/or assuming a duty cycle of 50% for BT.
  • CID 141 Reject, since 11g is addressed in the note at the bottom of  page 4 of 15-06-0214-00-004a-css-ca-document.pdf.

Hach, Nanotron

comments classified as t
Comments classified as T
  • CID 35
  • CID 36
  • CID 69

Hach, Nanotron

cid 35
CID 35
  • Comment:
    • PPDU format For UWB the format is given in octets while for CSS it is given in symbols.Neither one shows the the format on bit level. So it is unclear if all bits are used or where are reserved bits
  • Suggested remedy:
    • Show the PPDUs for both PHYs in bit allocation and add a reference to a clause which explains how bits and octets are mapped to symbols.
  • Proposed response:
    • ACCEPT in principle. Either add information here or at another place in the document.

Hach, Nanotron

cid 36
CID 36
  • Comment:
    • Bit interleaver: What is the mechanism when there isn't enough data to fill the entire interleaver (at the end of payload)
  • Suggested remedy:
    • Add the mechanism and give an example
  • Proposed response:
    • ACCEPT IN PRINCIPLE: Add definition for initial state and flushing of the interleaver

Hach, Nanotron

cid 69
CID 69
  • Comment:
    • The specification on how the "DQPSK symbols shall be modulated onto the stream of sub-chirps" is in my opinion vague
  • Suggested remedy:
    • none
  • Proposed response: ACCEPT IN PRINCIPLE. Information on the operation of the interleaver will be added.

Hach, Nanotron