January 2017 IEEE 802.11-17/0026r0 WUR Phase Noise Model Study
This presentation from January 2017 focuses on developing a phase noise model for Wake-Up Receivers (WUR) in the context of IEEE 802.11 standards. It addresses the need for a new model that considers power consumption targets, emphasizing the importance of integrating this factor into the phase noise model for WUR efficiency and performance enhancement.
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January 2017 doc.: IEEE 802.11-17/0026r0 WUR Phase Noise Model Study Date: 2017-01-10 Authors: Name Minyoung Park Affiliations Address Intel Corporation Phone email minyoung.park@intel.com 2111 NE 25th Ave. Hillsboro OR 97229 2200 Mission College Blvd., Santa Clara, CA 95054 2111 NE 25th Ave. Hillsboro OR 97229 2200 Mission College Blvd., Santa Clara, CA 95054 shahrnaz.azizi@intel.com thomas.j.kenney@intel.com po-kai.huang@intel.com Shahrnaz Azizi Intel Corporation Thomas Kenney Intel Corporation Po-Kai Huang Intel Corporation Submission Slide 1 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Abstract This presentation describes a phase noise model for WUR that takes power consumption into account Submission Slide 2 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Introduction The power consumption target for a wake-up receiver is much lower than a legacy 802.11 STA WUR SG PAR [802.11-16/1045r9]: The WUR has an expected active receiver power consumption of less than one milliwatt In 802.11, a simple phase noise model proposed in [802.11-04/224r1] has been used for a legacy 802.11 STA but without any constraint on power consumption We believe TGba should have a new phase noise model that takes the power consumption into account Submission Slide 3 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 TGn Phase Noise Model [11-04/224r1] Submission Slide 4 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Phase Noise Profile of a Ring Oscillator [1] Example: 65 nm, 75 W power consumption [1] O. Khan; B. Wheeler; F. Maksimovic; D. Burnett; A. M. Niknejad; K. Pister, "Modeling the Impact of Phase Noise on the Performance of Crystal-Free Radios," in IEEE Transactions on Circuits and Systems II: Express Briefs , vol.PP, no.99, pp.1-1 Submission Slide 5 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 CDF of Integrated Phase Noise [1] 500 iterations Fc=2.447 GHz Integration bandwidth 10 KHz 2 MHz and 10 MHz 10 KHz resolution Statistics Min: -13.5dBc Max: -0.25dBc Mean: -4.24dBc Median: -3.6dBc Std: 2.87dBc Submission Slide 6 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Minimum Phase Noise of a Ring Oscillator Minimum phase noise of a ring oscillator with the minimum power consumption is shown in [2]: (1) Definitions PNmin: minimum phase noise; Pmin: minimum power dissipation f0: oscillation frequency; f: offset frequency k: Boltzmann constant, T: temperature [2] Navid, T. H. Lee, R. W. Dutton, Minimum Achievable Phase Noise of RC Oscillators , JSSC 2005 Submission Slide 7 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Single-Sideband Phase Noise Spectrum in dBc/Hz The single-sideband phase noise L(fm) (in dBc/Hz) is expressed as follows for small values of c and for 0<=fm<<f0 in [3] (2) where fm= f: offset frequency and L(fm)=PN( f). [3] A. Demir, A. Mehrotra, and J. Roychowdhury., "Phase noise in oscillators: a unifying theory and numerical methods for characterization," Transactions on Circuits and Systems I: Fundamental Theory and Applications, vol. 47, no. 5, pp. 655-674, May 2000. Submission Slide 8 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Finding the Constant c for a Given LO Power Consumption Choose power consumption Pmin Find constant c that makes PN overlap with PNmin Example 1: f0 = 2.437GHz PNmin( f) at Pmin=75 W PN( f) with c = 0.5e-15 Integrated PN (iPN) =-5.7dBc 10 KHz ~ 2 MHz Submission Slide 9 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Example 2: Pmin=20 W Parameters f0 = 2.437GHz PNmin( f) at Pmin=20 W PN( f) with c = 1.875e-15 Integrated PN (iPN) =-2.1dBc 10 KHz ~ 2 MHz Submission Slide 10 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 Conclusions The phase noise model (Slide 8 eq.(2)) shown in [1] and [3] is a good candidate phase noise model for WUR development in TGba with some margin The minimum phase noise model (Slide 7 eq.(1)) shown in [2] can be used to estimate the power consumption of a ring oscillator Submission Slide 11 Minyoung Park (Intel Corporation)
January 2017 doc.: IEEE 802.11-17/0026r0 References [1] O. Khan; B. Wheeler; F. Maksimovic; D. Burnett; A. M. Niknejad; K. Pister, "Modeling the Impact of Phase Noise on the Performance of Crystal-Free Radios," in IEEE Transactions on Circuits and Systems II: Express Briefs , vol.PP, no.99, pp.1-1 [2] Navid, T. H. Lee, R. W. Dutton, Minimum Achievable Phase Noise of RC Oscillators , JSSC 2005 [3] A. Demir, A. Mehrotra, and J. Roychowdhury., "Phase noise in oscillators: a unifying theory and numerical methods for characterization," Transactions on Circuits and Systems I: Fundamental Theory and Applications, vol. 47, no. 5, pp. 655-674, May 2000. Submission 12 Minyoung Park (Intel Corporation)
