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Doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 1 Simple Model for Phase Noise Impairment for TGn Comparison Criterion Colin Lanzl.

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Presentation on theme: "Doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 1 Simple Model for Phase Noise Impairment for TGn Comparison Criterion Colin Lanzl."— Presentation transcript:

1 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 1 Simple Model for Phase Noise Impairment for TGn Comparison Criterion Colin Lanzl Aware, Inc. 40 Middlesex Turnpike, Bedford, MA 01730-1432 +1-781-687-0578 clanzl@aware.com

2 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 2 Objections to current IM 4 Current text for IM4 was never agreed in full TGn; Phase noise parameters not supported by published data; Phase noise impairment does not sufficiently stress proposals; There is an easier way…

3 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 3 Analytical Expression for Phase Noise as Filtered Gaussian Noise superimposed on tone Gaussian noise filtered by lowpass-equivalent filter with floor: PSD(f) = PSD plateau [ 1/(1+f/f cor ) 2 ] + PSD floor f cor = corner frequency PSD plateau = Phase noise power spectral density close to carrier PSD floor = Phase noise power spectral density floor very far from carrier

4 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 4 References for Data 1.I. Bouras, S. Bouras, T.Georgantas, N. Haralabidis, G. Kamoulakos, C. Kapnistis, S. Kavadias, Y. Kokolakis, P. Merakos, J.Rudell, S. Plevridis, I. Vassiliou, K. Vavelidis, A. Yamanaka "A Digitally Calibrated 5.15- 5.825GHz Transceiver for 802.11a Wireless LANs in 0.18um CMOS", Proc. 2003 IEEE Conf. Solid State Circuits, paper 20.2 (Athena ’03) 2.Pengfei Zhang, Thai Nguyen, Chris Lam, Doug Gambetta, Chet Soorapanth, Baohong Cheng, Siegfried Hart, Isaac Sever, Taoufik Bourdi, Andrew Tham, Behzad Razavi, "A Direct Conversion CMOS Transceiver for IEEE 802.11a WLANs", Proc. 2003 IEEE Conf. Solid State Circuits, paper 20.3 (Resonext ’03) 3.David Su, Masoud Zargari, Patrick Yue, Shahriar Rabii, David Weber, Brian Kaczynski, Srenik Mehta, Kalwant Singh, Sunetra Mendis, Bruce Wooley, "A 5GHz CMOS Transceiver for IEEE 802.11a Wireless LAN", Proc. 2002 IEEE Conf. Solid State Circuits, paper 5.4 (Atheros ’02)

5 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 5 Published Single-Sided Phase Noise Data with Analytical Fit

6 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 6 Fit Parameters PSD plateau = -94dBc/Hz f cor = 150kHz PSD floor = -130dBc/Hz

7 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 7 Recommendation If we must have a phase noise impairment (applied both to Tx and Rx radios), then it should be something that stresses proposals; Should be supported by published 5GHz work; Proposal: simple, lowpass filter model with floor, use fit parameters on previous slide.

8 doc.: IEEE 802.11-04/224r1 Submission March 2004 Colin Lanzl, AwareSlide 8 Proposed Language for IM4, Phase Noise The phase noise shall be specified with the simple lowpass filter model: PSD(f) = PSD plateau [ 1/(1+f/f cor ) 2 ] + PSD floor PSD plateau = -94dBc/Hz f cor = 150kHz PSD floor = -130dBc/Hz

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