IEEE P802.15 Wireless Personal Area Networks Project IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title TG8 UWB PHY Coexistence Assurance Document and Analysis Date Submitted [14 March, 2016] Source Igor Dotlić (NICT) Huan-Bang Li (NICT) Marco Hernandez (NICT) Ryu (NICT) Billy Verso (DecaWave), Michael McLaughlin (DecaWave) dotlic @ nict.go.jp lee @ nict.go.jp marco @ nict.go.jp ryu @ nict.go.jp billy.verso @ decawave.com michael.mclaughlin @ decawave.com Re: [Text for UWB PHY coexistence for IEEE 802.15.8 group for Peer Aware Communications] Abstract [This Coexistence Assurance Document is being provided by the IEEE 802.15.8 as Task Group to satisfy the requirements of the IEEE 802.19 Task Group.] Purpose [Provide Coexistence Assurance analysis as a part of 802.15 TG8 standardization.] Notice This document has been prepared to assist the IEEE P802.15. It is offered as a 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. Patent Policy The contributor is familiar with the IEEE-SA Patent Policy and Procedures: <http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>. Further information is located at and <http://standards.ieee.org/board/pat>. Table of Contents
UWB Transmit PSD Limit (PLIM) -41.3 dBm/MHz Set by regulatory authority Average margin to limit (MBO) 1.7 dB Due to spectral ripple (0.5+ dB) and ~1 dB margin for manufacturing tolerance, etc. Average UWB antenna gain (GUWB) -2 dBi Average gain from small, low cost UWB antenna to arbitrary victim receiver over 360 Average emissions PSD -45 dBm/MHz Average PSD seen in direction of arbitrary victim receiver UWB victim Thermal noise floor (kTB) -114 dBm/MHz Thermal floor (room temperature) UWB victim NF 6 dB Noise figure for the ECMA-368 receiver UWB victim frequency diversity (DFD) 3 dB ECMA UWB system uses 2x band frequency diversity for then encoding of each bit as part of its frequency hopping scheme UWB victim operating margin 5 dB Operating margin for acceptable performance in presence of multipath fading and RF interference 802.16 Effective operating floor for UWB interference susceptibility: (kTB + NFECMA368 + DFD + MOP) -100 dBm/MHz This is the effective allowable interference power level for the ECMA-368 operating receiver Level of wideband UWB emissions that result in 3 dB rise in ECMA-368 effective operating noise floor -100 dBm/MHz For 3 dB rise, TG8 UWB emissions in-band can be at the same as effective operating noise floor for AWN device receiver Path loss from UWB to receiver (average case) for 3 dB rise in effective operating noise floor 55 (3) dB (m) For 3 dB rise, wideband UWB emissions in-band can be at the same level as effective operating noise floor for AWN device receiver Path loss from UWB to receiver (average case) for 1 dB rise in effective operating noise floor 61 (6) dB (m) For 1 dB rise, wideband UWB emissions in-band must be 6 dB below effective operating noise floor for indoor 802.16 node receiver 4: Computation of the acceptable levels of TG8 device emissions for an operating ECMA-368 device Figure 4: Effect on ECMA-368 AWN as a function of separation distance from TG8UWB device. Impact among different IEEE 802.15 UWB PHY Assumptions: