May 2004 Slide 1 Submiss ion doc.: IEEE 802.15- 04/0220r0 Project: IEEE P802.15 Working Group for Wireless Personal Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Area Networks (WPANs) Submission Title: [Multi-band OFDM Physical Layer Proposal Update] Date Submitted: [10 May, 2004] Source: [Presenter 1: Charles Razzell] Company [Philips ] [[see page 2,3 for the complete list of company names, authors, and supporters] Address [1109, McKay Drive, San Jose, CA 95131, USA] Voice:[408-474-7243 ], FAX: [408-474-xxxx], E-Mail: [[email protected]] Re: [This submission is in response to the IEEE P802.15 Alternate PHY Call for Proposal (doc. 02/372r8) that was issued on January 17, 2003.] Abstract: [This document describes the Multi-band OFDM proposal for IEEE 802.15 TG3a.] Purpose: [To give proposal updates between March and May 04.] 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.
Transcript
May 2004
Slide 1Submission
doc.: IEEE 802.15-04/0220r0
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)(WPANs)
Submission Title: [Multi-band OFDM Physical Layer Proposal Update]Date Submitted: [10 May, 2004]Source: [Presenter 1: Charles Razzell] Company [Philips ] [[see page 2,3 for the complete list of company names, authors, and supporters]
Address [1109, McKay Drive, San Jose, CA 95131, USA]Voice:[408-474-7243 ], FAX: [408-474-xxxx], E-Mail: [[email protected]]
Re: [This submission is in response to the IEEE P802.15 Alternate PHY Call for Proposal (doc. 02/372r8) that was issued on January 17, 2003.]
Abstract: [This document describes the Multi-band OFDM proposal for IEEE 802.15 TG3a.]
Purpose: [To give proposal updates between March and May 04.]
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.
May 2004
Slide 2Submission
doc.: IEEE 802.15-04/0220r0
Authors of the MB-OFDM Proposal from 17 affiliated companies/organizations
Femto Devices: J. CheahFOCUS Enhancements: K. Boehlke General Atomics: N. Askar, S. Lin, D. Furuno, D. Peters, G. Rogerson, M. WalkerInstitute for Infocomm Research: F. Chin, Madhukumar, X. Peng, SivanandIntel: J. Foerster, V. Somayazulu, S. Roy, E. Green, K. Tinsley, C. Brabenac, D. Leeper, M. HoMitsubishi Electric: A. F. Molisch, Y.-P. Nakache, P. Orlik, J. ZhangPanasonic: S. MoPhilips: C. Razzell, D. Birru, B. Redman-White, S. KerrySamsung Advanced Institute of Technology: D. H. Kwon, Y. S. KimSamsung Electronics: M. ParkSONY: E. Fujita, K. Watanabe, K. Tanaka, M. Suzuki, S. Saito, J. Iwasaki, B. HuangStaccato Communications: R. Aiello, T. Larsson, D. Meacham, L. Mucke, N. Kumar, J. Ellis ST Microelectronics: D. Hélal, P. Rouzet, R. Cattenoz, C. Cattaneo, L. Rouault, N. Rinaldi,, L.
Blazevic, C. Devaucelle, L. Smaïni, S. Chaillou Texas Instruments: A. Batra, J. Balakrishnan, A. Dabak, R. Gharpurey, J. Lin, P. Fontaine,
J.-M. Ho, S. Lee, M. Frechette, S. March, H. YamaguchiAlereon: J. Kelly, M. Pendergrass, Kevin Shelby, Shrenik Patel, Vern Brethour, Tom MatheneyUniversity of Minnesota: A. H. Tewfik, E. SaberiniaWisair: G. Shor, Y. Knobel, D. Yaish, S. Goldenberg, A. Krause, E. Wineberger, R. Zack, B.
Blumer, Z. Rubin, D. Meshulam, A. Freund
May 2004
Slide 3Submission
doc.: IEEE 802.15-04/0220r0
In addition, the following 99 affiliated companies support this proposal:
AboCom Systems : Wen TsayAdamya Computing Technologies: S.ShettyAdaptive Labs: Siamack HaghighiAdimos: Michael GenossarAdvanced science and Technology Institute: Billly
PucyutanAllion Computer: mark LaiAppairent Technologies: James GilbArounda: Rico Biriah Artimi: Mark MooreAsahi: Shin Higuchi Blue7 Communications: Shinji InoueBroadcom: J. KaraoguzCentro de Tecnologia de las Comunicaciones S.A. :
Alejandro Torrecilla Chief Tek Electronics : Chieftek ClearComet Ventures : William Ahern Codified Telenumerics : Paul Harvey CommStack : Brian Ebert Compliance Certification Services: Barbara JudgeConcrete Logic: Nanci VogtliCoventive Technologies : IABU CoWare : Sylvia Nessan CWINS, WPI: Xinrong Li
Cypress Semiconductor: Drew HarringtonDenali Software : Kevin Silver EIZO: Ryotaro ImaiESRD of CSIST: Dr. Kuo-Chan HanETS Product Service (USA) : Thomas Dickten Fujitsu Microelectronics America, Inc: A. Agrawal Furaxa: E. GoldbergGenesys Logic : Miller Lin Genius Instituto de Tecnologia: Izaias Silva Hewlett Packard: M. FidlerHisignal Minervian: Jean TsaoINEX Multimidia : Paulo Campos Infineon Technologies: Y. RashiInnovative Wireless Technologies: Kent CollingInphi : Loi Nguyen Invisible Computer :Jay Prince JAALAA: A. AnandakumarLeviton Voice Data Division: Julius Ametsitsi Litepoint: Greg RavenscroftLogitech: Rene SomerMarvel: Hui-Ling Lou Maxim: C. O’ConnorM.B. International – Stefano Bargauan MCCI : Joe Decuir
Supporters
May 2004
Slide 4Submission
doc.: IEEE 802.15-04/0220r0
MeshDynamics : Francis daCosta Mewtel Technology : Park, Seog-Hong Microsoft: A. HassanMindready Solutions : Frederic Le Bouar Multirate Systems: Vinay SatheNEC Electronics: T. SaitoNetac Technology : Flight Shi Xuejin NewLogic technologies: Anil Gercekci: Nokia: P. A. RantaOEA International: Jerry TalengerOlympus : Yoshiro Yoda Open Interface : Greg Burns Oxygen Development: Jonny RichardsonPositive Edge ASICs: HungMun LamPrancer: Frank Byers Profilo Telr@ : Gamze Yildiz Pulse-Link: Paul DillonRadioPulse: Sungho Wang Raritan Computer : Sev Onyshkevych Realtek Semiconductor Corp: T. ChouRenesas Technology: Larry ArnettRFDomus: A. MantovaniRF Micro Devices: Baker ScottSharp : Hiroshi Akagi Sipex: George DixonSiWorks: R. BertschmannStonestreet One: Tim Reilly String Logix: Naren Erry
SVC Wireless: A. YangSynopsys: Xerxes WaniaTDK: P. CarsonTelegateway: Rah HaqqiTimeDerivative : Kai Siwiak Toppan Chunghwa Electronics : Frank Hsieh Toshiba : John Shi TRDA: Mike Tanahashi TrellisWare Technologies: Metin ByramTrendchip Technologies: Harris ZhouTUV Rheinland of North America : Rolf W BienerttZero: Oltak UnsalUnwired Connect: David D. Edwin UWB Wireless: R. Caiming QuiVabric: Sean ParhamVerisity Design : Pete Heller Vestel: Haluk Gokmen VIA Networking Technologies: Chuanwei Liu / Walton
Li Virage Logic: Howard PakoshWi-LAN : Shawn TaylorWipro: Vivek Wandile Wireless Experience : Pär Bergsten WiQuest: Matthew B. Shoemake Wisme: N. Y. LeeWPANS: Baris DundaZyDAS: Jonny Cheng
Supporters (Contd)
May 2004
Slide 5Submission
doc.: IEEE 802.15-04/0220r0
No Vote Responses
MB-OFDM authors have studied the no-vote responses Most of the technical and performance issues have already been
addressed in previous presentations. We think the most important issue is the FCC certification
Summary of presentation MB-OFDM solution advantages Update on the FCC Regulatory approval Update on Guard tones issue
May 2004
Slide 6Submission
doc.: IEEE 802.15-04/0220r0
Multi-band OFDMAdvantages (1) A mature solution that has been optimized by a large number of
engineers from a number of companies
Inherent robustness in all the expected multipath environments.
Excellent robustness to ISM, U-NII, and other generic narrowband interference.
Ability to comply with world-wide regulations: Bands and tones may be turned on/off to comply with changing
regulations.
Coexistence with current and future systems: Bands and tones may be turned on/off for enhanced coexistence with the
other devices.
May 2004
Slide 7Submission
doc.: IEEE 802.15-04/0220r0
Multi-band OFDMAdvantages (2)
Scalability with process: Digital section complexity/power scales with improvements in technology
nodes (Moore’s Law). Analog section complexity/power scales slowly with technology node
Suitable for CMOS implementation Lower cost and power solution
Antenna and pre-select filter are easier to design (can possibly use off-the-shelf components).
Low cost, low power, and CMOS integrated solution leads to:
Early market adoption!
May 2004
Slide 8Submission
doc.: IEEE 802.15-04/0220r0
Multi-band OFDM System Parameters
System parameters for mandatory and optional data rates:
* Mandatory information data rate, ** Optional information data rate
May 2004
Slide 9Submission
doc.: IEEE 802.15-04/0220r0
MB-OFDM Band plan
There are 5 Band Groups: Band group #1 is mandatory, remaining (#2 – #5) are optional.
Define 4 Time-Frequency coded Logical Channels for Band groups #1 – #4. Define 2 Time-Frequency coded Logical Channels for Band group #5. This yields 18 potential Logical Channels support for 18 piconets. Can avoid Band group #2 when interference from U-NII is present.
f3432MHz
3960MHz
4488MHz
5016MHz
5544MHz
6072MHz
6600MHz
7128MHz
7656MHz
8184MHz
8712MHz
9240MHz
9768MHz
Band#1
Band#2
Band#3
Band#4
Band#5
Band#6
Band#7
Band#8
Band#9
Band#10
Band#11
Band#12
Band#13
10296MHz
Band#14
Band Group #1 Band Group #2 Band Group #3 Band Group #4 Band Group #5
May 2004
Slide 10Submission
doc.: IEEE 802.15-04/0220r0
TF Codes for Multiple Access
Mapping of TF Codes and Preambles to Logical Channels in a Band Group:
Band Groups
PreamblePattern
TF CodeLength
Time Frequency Code
1,2,3,4 1 6 1 2 3 1 2 3
2 6 1 3 2 1 3 2
3 6 1 1 2 2 3 3
4 6 1 1 3 3 2 2
5 1 4 1 2 1 2 – –
2 4 1 1 2 2 – –
May 2004
Slide 11Submission
doc.: IEEE 802.15-04/0220r0
Link Budget and Receiver Sensitivity
Assumption: Logical channel 1, AWGN, and 0 dBi gain at TX/RX antennas.
Parameter Value Value Value
Information Data Rate 110 Mb/s 200 Mb/s 480 Mb/s
Average TX Power -10.3 dBm -10.3 dBm -10.3 dBm
Total Path Loss 64.2 dB
(@ 10 meters)
56.2 dB
(@ 4 meters)
50.2 dB
(@ 2 meters)
Average RX Power -74.5 dBm -66.5 dBm -60.5 dBm
Noise Power Per Bit -93.6 dBm -91.0 dBm -87.2 dBm
CMOS RX Noise Figure 6.6 dB 6.6 dB 6.6 dB
Total Noise Power -87.0 dBm -84.4 dBm -80.6 dBm
Required Eb/N0 4.0 dB 4.7 dB 4.9 dB
Implementation Loss 2.5 dB 2.5 dB 3.0 dB
Link Margin 6.0 dB 10.7 dB 12.2 dB
RX Sensitivity Level -80.5 dBm -77.2 dBm -72.7 dB
May 2004
Slide 12Submission
doc.: IEEE 802.15-04/0220r0
Multipath Performance
The distance at which the Multi-band OFDM system can achieve a PER of 8% for a 90% link success probability is tabulated below:
Notes:1. Simulations includes losses due to front-end filtering, clipping at the DAC, DAC precision, ADC
degradation, multi-path degradation, channel estimation, carrier tracking, packet acquisition, overlap and add of 32 samples (equivalent to 60.6 ns of multi-path protection), etc.
2. Increase in noise power due to overlap and add is compensated by increase in transmit power (1 dB) same performance as an OFDM system using a cyclic prefix.
Range* AWGN CM1 CM2 CM3 CM4
110 Mbps 20.5 m 11.4 m 10.7 m 11.5 m 10.9 m
200 Mbps 14.1m 6.9 m 6.3 m 6.8 m 4.7 m
480 Mbps 7.8 m 2.9 m 2.6 m N/A N/A
May 2004
Slide 13Submission
doc.: IEEE 802.15-04/0220r0
Simultaneously Operating PiconetsPerformance with TF Codes
Assumptions: operating at a data rate of 110 Mbps with Band Group #1.
Simultaneously operating piconet (SOP) performance as a function of the multipath channel environments:
Results incorporate SIR estimation at the receiver.
Channel Environment 2 SOPs 3 SOPs 4 SOPs
CM1 (dint/dref) 0.4 1.2 1.5
CM2 (dint/dref) 0.4 1.2 1.5
CM3 (dint/dref) 0.4 1.2 1.5
CM4 (dint/dref) 0.4 1.5 1.9
May 2004
Slide 14Submission
doc.: IEEE 802.15-04/0220r0
Signal Robustness/Coexistence
Assumption: Received signal is 6 dB above sensitivity.
Value listed below are the required distance or power level needed to obtain a PER 8% for a 1024 byte packet at 110 Mb/s and a Band Group #1 device
Coexistence with 802.11a/b and Bluetooth is relatively straightforward because these bands are completely avoided with Band group #1 devices
Interferer Value
IEEE 802.11b @ 2.4 GHz dint 0.2 meter
IEEE 802.11a @ 5.3 GHz dint 0.2 meter
Modulated interferer SIR -9.0 dB
Tone interferer SIR -7.9 dB
May 2004
Slide 15Submission
doc.: IEEE 802.15-04/0220r0
Complexity
Unit manufacturing cost (selected information): Process: CMOS 90 nm technology node in 2005. CMOS 90 nm production will be available from all major SC foundries by early
2004.
Die size for Band Group #1 device:
Complete Analog* Complete Digital
90 nm 2.7 mm2 1.9 mm2
130 nm 3.0 mm2 3.8 mm2
* Component area.
May 2004
Slide 16Submission
doc.: IEEE 802.15-04/0220r0
Power Consumption
Active CMOS power consumption
Block 90 nm 130 nm
TX AFE (110, 200 Mb/s) 76 mW 91 mW
TX Digital (110, 200 Mb/s)
17 mW 26 mW
TX Total (110 Mb/s) 93 mW 117 mW
RX AFE (110, 200 Mb/s) 101 mW 121 mW
RX Digital (110 Mb/s) 54 mW 84 mW
RX Digital (200 Mb/s) 68 mW 106 mW
RX Total (110 Mb/s) 155 mW 205 mW
RX Total (200 Mb/s) 169 mW 227 mW
Deep Sleep 15 W 18 W
May 2004
Slide 17Submission
doc.: IEEE 802.15-04/0220r0
FCC Certification Update
May 2004
Slide 18Submission
doc.: IEEE 802.15-04/0220r0
FCC Update As mentioned in the last meeting, both the FCC and NTIA have
decided to pursue their own testing to reconcile the claims from both sides We have had continued discussions with FCC and ITS
regarding their respective test plans We are providing information as requested to aid in
understanding of MB-OFDM waveform MBOA companies filed with the FCC a critique of the
interference study previously filed by the Coalition of C-Band Constituents (ET Dockets 98-153 and 02-380)
The FCC respects the need to resolve the rules interpretation issue quickly and is doing everything they can to progress in a timely manner
May 2004
Slide 19Submission
doc.: IEEE 802.15-04/0220r0
Guard Tone Update
May 2004
Slide 20Submission
doc.: IEEE 802.15-04/0220r0
Previous Definition of Guard Tones
By using a contiguous set of orthogonal carriers, the transmit spectrum will always occupy a bandwidth greater than 500 MHz.
Total of 128 tones: 100 data tones used to transmit information (constellation: QPSK). 12 pilot tones used for carrier and phase tracking. 10 user-defined pilot tones. Remaining 6 tones including DC are NULL tones.
User-defined pilot tones: Carry no useful information. Energy is placed on these tones to ensure that the spectrum has a bandwidth
greater than 500 MHz. Can trade the amount of energy placed on tones for relaxing analog filtering
specifications. Ultimately, the amount of energy placed on these tones is left to the implementer.
Provides a level of flexibility for the implementer.
May 2004
Slide 21Submission
doc.: IEEE 802.15-04/0220r0
Motivation for Change
DS-UWB has shown concern over the use of Guard Tones within the MBOA system.
Exact comment:
Previous "No" comments have pointed out the unacceptable approach of using PN-modulated guard tones to achieve the minimum 500 MHz bandwidth required by the FCC for operation under the UWB rules. Recent public documents emphasize that this approach would both be unacceptable to the NTIA and would violate FCC general technical requirements for Part 15 operations (for details see document 04/140r2 pages).
May 2004
Slide 22Submission
doc.: IEEE 802.15-04/0220r0
New Mapping onto Guard Tones
The Guard Tones can also be used in a manner that is similar to excess BW in single-carrier systems. This is equivalent to spreading a fraction of the data tones.
We can map the tones at the edge of the 100 data tones onto the Guard tones.
The advantage of this approach is that the information on the Guard Tones can be coherently combined with the information on the Data Tones to improve the robustness at the end of the band. This case may become more important when we have co-channel interference.
We can also relax the filter specifications by allowing different power levels on the Guard Tones. Relaxing the exact power requirements on these tones would allow for trade-offs in the
order and complexity of the TX and RX filters.
May 2004
Slide 23Submission
doc.: IEEE 802.15-04/0220r0
Mapping Specification
Below we provide an illustration of the mapping from the edge Data Tones to the Guard Tones:
The advantage of this mapping is ease of implementation and ease of combining information from Guard Tones and Data Tones.
0 5 35
c49 c50 c53 P5 c54 c80 P35 c81DC
Subcarrier numbers
P -55c0
-55 -45 -35
c10 c18 P -35 c19 c27P -45c9c1
-25
P -25 c28
-15
P-15 c37c36
-5
P -5 c46c45
25
c71 P25 c72
15
c62 P15 c63
45
c89 P45 c90
55
c98 P55 c99c4c0
-61
c95
61
c99
CopyCopy
May 2004
Slide 24Submission
doc.: IEEE 802.15-04/0220r0
Conclusions
Specified an unique mapping onto the Guard Tones that is analogous to using excess BW in single-carrier systems.
The information contained on the Guard Tones can be used to make the information carried at the edge of the band more robust, especially in the presence of co-channel interference.
This approach should address the DS-UWB concerns.
May 2004
Slide 25Submission
doc.: IEEE 802.15-04/0220r0
Summary MBOA proposal has seen significant improvements since its
inception Updated band plan gives better SOP performance with total 18
piconet channels
Document 02/268 r3 provides all the information needed to build inter-operable PHY based on this proposal. A number of companies are at advanced stages of developing
chips based on this document
FCC committed to addressing issue quickly MBOA actively engaged with FCC to provide all requested
information and resources
May 2004
Slide 26Submission
doc.: IEEE 802.15-04/0220r0
Additional Slides
May 2004
Slide 27Submission
doc.: IEEE 802.15-04/0220r0
Sculpting the Spectrum (1)
The DS-UWB camp is concerned that it may not be possible to null out tones within the preamble and protect services such as the Radio Astronomy Bands within Japan.
Exact comment:
In addition, although it seems possible to turn off one or more tones in an OFDM symbol by modulating one or more tones with a "zero" value, it seems this is only feasible for the PAYLOAD portion of the MB-OFDM signal transmission. Every single MB-OFDM packet also contains a PHY preamble that is specifically defined in the time domain according to a fixed time sequence of samples. This PREAMBLE occupies the entire OFDM channel for most of the 10-microsecond preamble. Thus, it is NOT POSSIBLE to "turn off" individual tones or groups of tones in the PREAMBLE portion of each transmission. How could this approach for “sculpting” the spectrum be used to meet a regulatory requirement for lower emissions in some band (for example, a radio astronomy band, as proposed in document 03/267r5, page 7) if every packet PREAMBLE still results in emissions across the whole band?
May 2004
Slide 28Submission
doc.: IEEE 802.15-04/0220r0
Sculpting the Spectrum (2)
The PREAMBLE is composed of three sections: A packet synchronization sequence (time-domain). A frame synchronization sequence (time-domain). A channel estimation sequence (frequency-domain). It is possible to zero
out tones and "sculpt the spectrum" for this portion of the sequence.
For the time-domain sequences, it is also possible to "sculpt the spectrum" when needed.
One obvious approach is to pass the sequence through a filter that has notches in the appropriate locations. The preamble sequences are typically pre-stored, so we can pre-compute
the modified preambles.
Question: Is it even possible to sculpt the DS-UWB without using expensive off-chip analog filters or having to rely on the overly-complex and power hungry SSA technique?
May 2004
Slide 29Submission
doc.: IEEE 802.15-04/0220r0
CMOS Solutions DS-UWB does not believe MBOA companies are developing a CMOS solution.
Exact comment:
Previous statements indicated that the MB-OFDM solution was specifically designed to enable a low power all-CMOS implementation (including the RF chip)-- [see document 03/267 r5, pages 39 and 41]. Is it still the case that MB-OFDM enables an all-CMOS implementation, given that all initial implementation efforts seem to be based on SiGe process technology?
We refer the DS-UWB camp to the following web site:
http://www.staccatocommunications.com
Extracted quote from web page:
The company is leading industry development of the first UWB [MBOA] silicon in all-CMOS to enable universal wireless connectivity of high-speed devices using available UWB spectrum.
