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MB-OFDM Waiver Panel - Regulatory Compliance and Clarification

This document provides a summary of the MultiBand OFDM waiver and its impact on regulatory compliance for MB-OFDM systems. It highlights the FCC's ruling, allowing MB-OFDM transmitters to operate at full power and the significance of this decision for voters in the IEEE 802.15.3a technical selection procedure.

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MB-OFDM Waiver Panel - Regulatory Compliance and Clarification

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  1. March 2005 • doc.: IEEE 802.15-05/168r0 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [MB-OFDM waiver panel] Date Submitted: [March 2005] Revised: [] Source: [Roberto Aiello, Charles Razzell, Gadi Shor; Staccato Communications, Philips, Wisair] Re: [Multiband OFDM proposal] Abstract: [This presentation provides a brief summary of the MultiBand OFDM waiver] Purpose: [To inform voters of the merits of MultiBand OFDM thereby allowing them to make an informed vote in the IEEE 802.15.3a technical selection procedure.] 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 or organization. The material in this document is subject to change in form and content after further study. The contributor reserves 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.

  2. MB-OFDM proposal update:Clarification of regulatory situation Roberto Aiello, Charles Razzell, Gadi Shor R. Aiello, C. Razzell, G. Shor

  3. Summary • Freescale and Motorola claimed that MB-OFDM systems must transmit at reduced power • The number one reason for voting against the MB-OFDM proposal was regulatory compliance • MBOA-SIG worked diligently for two years at great financial expense to obtain clarification from the FCC • The mechanism for clarification was a waiver request • FCC granted the MBOA-SIG waiver in March 2005 • MB-OFDM transmitters may be tested in normal operational mode • MB-OFDM systems can transmit at full power • Gated transmissions may also be measured with gating active R. Aiello, C. Razzell, G. Shor

  4. Band-3 Band-2 Band-2 Band-1 Band-1 4752 MHz 4224 MHz 3696 MHz Avg Pwr = 1/3 of “hopping-on” Power 3168 MHz Time September 2003 - IEEE 802.15-03/343r1 • During the San Francisco IEEE meeting XSI made a presentation on FCC rules: Slide 3 of 03153r9P802-15_TG3a-XtremeSpectrum-CFP-Presentation.ppt • The issue today is NOT whether or not there is more or less interference • The issue is, what are the rules. • Side interest is WHY did NTIA and FCC specifically write rules for frequency hoppers • Slide 5 from 03153r9P802-15_TG3a-XtremeSpectrum-CFP-Presentation.ppt; • XSI claimed that MB-OFDM needs to reduce its transmit power by 4.7 dB to be FCC compliant, MB-OFDM should transmit at -46 dBm/MHz (instead of -41.3 dBm/MHz) R. Aiello, C. Razzell, G. Shor

  5. Waiver Highlights • Waiver is granted • Waiver broadly accepts in situ compliance testing for all indoor/handheld UWB systems • All tests to be done with hopping, sequencing, or gating as the system will be used in practice • Exception for now: 5030-5650 MHz • Waiver in force until FCC finalizes rule-making proceeding on these issues R. Aiello, C. Razzell, G. Shor

  6. Conclusions • The FCC agrees with the MB-OFDM SIG • Motorola and Freescale requests for denial of the waiver were not accepted • The FCC ruling eliminated the #1 reason stated for voting against MB-OFDM • Your vote for MB-OFDM is requested! R. Aiello, C. Razzell, G. Shor

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