1. Simple Model for Phase Noise Impairment for TGn Comparison Criterion
Month 2004
doc.: IEEE /224r0
March 2004
Simple Model for Phase Noise Impairment for TGn Comparison Criterion
Colin Lanzl
Aware, Inc.
40 Middlesex Turnpike, Bedford, MA
Colin Lanzl, Aware
Colin Lanzl, Aware

2. Objections to current IM 4
March 2004
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…
Colin Lanzl, Aware

3. PSD(f) = PSDplateau[ 1/(1+f/fcor)2 ] + PSDfloor
Month 2004
doc.: IEEE /224r0
March 2004
Analytical Expression for Phase Noise as Filtered Gaussian Noise superimposed on tone
Gaussian noise filtered by lowpass-equivalent filter with floor:
PSD(f) = PSDplateau[ 1/(1+f/fcor)2 ] + PSDfloor
fcor= corner frequency
PSDplateau = Phase noise power spectral density close to carrier
PSDfloor = Phase noise power spectral density floor very far from carrier
Colin Lanzl, Aware
Colin Lanzl, Aware

4. March 2004
References for Data
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 GHz Transceiver for a Wireless LANs in 0.18um CMOS", Proc IEEE Conf. Solid State Circuits, paper 20.2 (Athena ’03)
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 a WLANs", Proc IEEE Conf. Solid State Circuits, paper 20.3 (Resonext ’03)
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 a Wireless LAN", Proc IEEE Conf. Solid State Circuits, paper 5.4 (Atheros ’02)
Colin Lanzl, Aware

5. Published Single-Sided Phase Noise Data with Analytical Fit
March 2004
Published Single-Sided Phase Noise Data with Analytical Fit
Colin Lanzl, Aware

6. Fit Parameters PSDplateau = -94dBc/Hz fcor= 150kHz
March 2004
Fit Parameters
PSDplateau = -94dBc/Hz
fcor= 150kHz
PSDfloor = -130dBc/Hz
Colin Lanzl, Aware

7. March 2004
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.
Colin Lanzl, Aware