1. doc.: IEEE 802.22-12/0091r1 Submission PHY/MAC Proposal for the IEEE 802.22b IEEE P802.22 Wireless RANs Date: 2012-10-28 Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 1 Authors: Notice: This document has been prepared to assist IEEE 802.22. 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.22. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures http://standards.ieee.org/guides/bylaws/sb-bylaws.pdf including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that tpublication will be approved for publication. Please notify the Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Apurva Mody as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.22 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at patcom@iee.org.apurva.mody@ieee.orgpatcom@iee.org

2. doc.: IEEE 802.22-12/0091r1 Submission Summary This document contains a partial PHY/MAC proposal for the IEEE 802.22b. This proposal covers PAR Scope and the following requirements –For 802.22b PHY Supports low complexity/capability design (PAR Scope) Supports cost-effective compliance with regulatory spectral mask (Requirements 01, 12) Support higher data rates (PAR Scope, Requirement 02) –For 802.22b MAC Supports multi-channel utilization (PAR Scope, Requirement 02) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 2

3. doc.: IEEE 802.22-12/0091r1 Submission Technology Overview PHY –Use of multiple subchannels for uplink to cover low-rate applications, mainly for low-complexity CPE (L-CPE) –Multidimensional Trellis Coded Modulation to cover high-rate applications MAC –Multiple channel use to cover high-rate applicatons –Modification of Channel Set Management Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 3

4. doc.: IEEE 802.22-12/0091r1 Submission Frame Structure (Ref. [3]) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 4

5. doc.: IEEE 802.22-12/0091r1 Submission PHY Proposal Low-rate applications –Use 3 uplink subchannels with repetition High-rate applications –Conventional FEC and higher-order QAM (i.e. 256QAM) –Multidimensional Trellis Coded Modulation (MD-TCM) MD-TCM based on Wei construction (Ref. [4]) MD-TCM according to ITU-T Recommendation V. 34 [5][6] –Detail modes are listed in the next slide PHY mode 1 – 16 (Table 202 in the IEEE 802.22-2011) –No Change Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 5

6. doc.: IEEE 802.22-12/0091r1 Submission （通常の Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 6 Figure Typical block diagram of OFDM system

7. doc.: IEEE 802.22-12/0091r1 Submission Additional PHY Mode (Low-rate) FEC: Binary convolutional code in Ref. [3] Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 7 PHY Mode Modulation Coding Rate # of Subchannels # of repetition Data rate (kb/s) (CP=T FFT /16) Remarks L1 QPSK1/21375.618 L2 QPSK3/413113.427 L3 QPSK1/231226.854 L4 QPSK3/431340.280 Table PHY Modes and their related modulations, coding rates and data rates for T CP = T FFT /16

8. doc.: IEEE 802.22-12/0091r1 Submission Additional PHY Mode (High-rate) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 8 PHY Mode Modulation Coding Rate Data rate (Mb/s) Spectral Efficiency (for 6 MHz bandwidth) Remarks H1 256-QAM3/427.244.56 H2 256-QAM5/630.275.07 H3 256-QAM7/831.785.32 H4 4D-TCM- 48-QAM 10/1122.73.78 H5 4D-TCM- 192-QAM 14/1531.785.32 H6 8D-TCM 224-QAM 72/7640.836.84 Table PHY Modes and their related modulations, coding rates and data rates for T CP = T FFT /16 FEC: Binary convolutional code in Ref. [3] (256QAM)

9. doc.: IEEE 802.22-12/0091r1 Submission System Block Diagram Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 9

10. doc.: IEEE 802.22-12/0091r1 Submission MD-TCM based on Wei construction [4] 4-D 2 2-D symbols Data mapping/coding contains –Coset selection –Region pair selection –Symbol code Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 10 Fig. 2-D constellation of 4D-TCM 192QAM A B C D

11. doc.: IEEE 802.22-12/0091r1 Submission Structure of MD-TCM (4D-TCM192QAM) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 11 Accommodate 14 information bits in 4-D symbol (2x2-D symbols) = 7bits/symbol

12. doc.: IEEE 802.22-12/0091r1 Submission MD-TCM based on ITU-T Rec. V.34 More sophisticated data mapping scheme used in the modem for PSTN. All signal constellations are subsets of a 1664-point superconstellation. –A quarter of the points of superconstellation is shown in the figure. In this contribution, we use 896-point superconstellation –224-point 2-D constellation x 4 symbols –9bits/symbol Please see Ref. [5] and [6] for more information. Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 12 Fig. A quarter of the points of superconstellation in ITU-T Rec. V.34

13. doc.: IEEE 802.22-12/0091r1 Submission Structure of MD-TCM (based on ITU-T Rec. V.34) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 13

14. doc.: IEEE 802.22-12/0091r1 Submission Simulation Parameters Sept. 2012 S. Sasaki, B. Zhao, and H. Niwano, Niigata Univ.Slide 14 PrametersSpecification Center frequency207 [MHz] Bandwidth6 [MHz] Data mapping256QAM 4D-TCM192QAM, MD-TCM based on V.34 Convolution codeK=7, [133 171] 8 DecodingSoft-decision Viterbi decoding ModulationOFDM FFT size 2048 (data ： 1440, pilot:240 ） Guard interval1/8 channelAWGN

15. doc.: IEEE 802.22-12/0091r1 Submission Simulation Results (AWGN channel) Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 15

16. doc.: IEEE 802.22-12/0091r1 Submission MAC Proposal Use multiple TV Channels to cover higher-rate applications –Modification of channel set management may be necessary to for use of multiple TV channels Modification of Figure 162 and Table 232 in Ref. [3] to keep the description of the standard consistent. –Details are shown in the following slides. Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 16

17. doc.: IEEE 802.22-12/0091r1 Submission Channel classification and selection in IEEE 802.22-2011 p.368 “Protected channels may be moved to the candidate channel set in the event that the incumbent or the WRAN systems have vacated the channel.” To keep consistency among the text, figures and tables, we propose a modification of Figure 162 and Table 232 into the following two slides according to the text mentioned above.

18. doc.: IEEE 802.22-12/0091r1 Submission Channel Set Transition Diagram (IEEE802.22- 2011, Fig. 162)

19. doc.: IEEE 802.22-12/0091r1 Submission Channel Set Transition Matrix IEEE 802.22-2011, Table 232 State UnclassifiedCandidateBackupOperatingProtected Event Event 1Protected Event 2Unclassified Event 3Backup Event 4Candidate Event 5Operating Event 6Candidate Event 7Candidate Event 8Unclassified

20. doc.: IEEE 802.22-12/0091r1 Submission Proposed Modification of the State Transition Diagram

21. doc.: IEEE 802.22-12/0091r1 Submission Proposed Modification of the State Transition Matrix State UnclassifiedCandidateBackupOperatingProtected Event Event 1Protected Event 2Candidate Event 3Backup Event 4Candidate Event 5Operating Event 6Candidate Event 7Candidate Event 8Unclassified Protected

22. doc.: IEEE 802.22-12/0091r1 Submission Conclusions This partial PHY/MAC proposal for the IEEE 802.22b contains the following features: –PHY Use of multiple subchannels for uplink to cover low-rate applications, mainly for low-complexity CPE (L-CPE) Multidimensional Trellis Coded Modulation to cover high-rate applications –MAC Multiple channel use to cover high-rate applicatons Modification of Channel Set Management Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 22

23. doc.: IEEE 802.22-12/0091r1 Submission References 1.Call for proposal, Doc. 802.22-12/0024r03-000b 2.Selection criteria document, 802.22-12/0025r08-000b 3.IEEE 802.22-2011, July 201 4.L. F. Wei, “Trellis-coded modulation with multidimensional constellations,” IEEE Trans. Info. Theory, vol. 33, No. 4, pp. 483-531, 1987 5.ITU-T Recommendation V.34, “A modem operating at data signalling rates of up to 33 600 bit/s for use on the general switched telephone network and on leased point-to-point 2-wire telephone-type circuits,” Feb. 1998 6.G. D. Forney, Jr., et al., The V.34 High-Speed Modem Standard, IEEE Commun. Mag. pp. 28-33, Dec. 1996 Nov. 2012 S. Sasaki, B. Zhao, et al., Niigata Univ.Slide 23