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Doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 1 Path Loss Models for TGad Channel Models: Antenna and Dispersion Impact.

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Presentation on theme: "Doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 1 Path Loss Models for TGad Channel Models: Antenna and Dispersion Impact."— Presentation transcript:

1 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 1 Path Loss Models for TGad Channel Models: Antenna and Dispersion Impact Date: 2009-11-12 Authors:

2 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 2 Outline A brief overview of available Path-Loss models Impact of antenna diagram combined with dispersion of measurements for a given scenario Antenna height impact: validity range and applications of the Earth- Plane model

3 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 3 A brief overview of path-loss models Scenario/EnvironmentIEEE802.15.3C and TGad DocumentsDate Office environment [1][2] IEEE doc. 802.11-09/0553r1 “Channel Models for 60 GHz WLAN Systems ” 2009 Residential Environment [3] "Characterization and modeling of the 60 GHz indoor channel in the office and residential environments, IEEE802.15.3c doc. n° 15-06-0041-00- 3c, January 2006 2006 15.3c Channel models [4] "TG3c Channel Model Final Report Presentation", IEEE 802.15-06-0483-02_003c, September 2007 2007

4 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 4 A brief overview of path-loss models at 60 GHz The Friis transmission equation  Free Space path-Loss model at any RF frequency carrier Kwi : number of walls and floors of category i Lwi : penetration Loss per wall/floor of category material One Slope Path-Loss Model (Coreira model [5]) Motley-Keenan model

5 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 5 A brief overview of path-loss models H. Yang and Smulders models [6] Omni/Omni h TX/ h RX =2.4/1/ 4 m Tx/Rx=70°/70° h TX/ h RX =2.4/1/4 m Tx/Rx=70°/ 8° h TX/ h RX =2.4 /1/4 m LOSNLOSLOSNLOSLOS n0.62.72.1N/A2.0 PL(d 0 ) (dB) 87.87167.0N/A67.4 σ S (dB) 1.32.70.8N/A0.6 Orange labs IEEE802.15.3c models [4] Residential 1 Sectoral ant (72°/60°) Residential 2 Directive ant. (72°/10°) Office 1 Sectoral ant. ( 72°/60°) LOSNLOSLOSNLOSLOS n1.532.441.73N/A0.56 PL(d 0 ) (dB) 23.516.24.3N/A49.6 σ S (dB)1.56.21.6N/A1.2 Modified Free Space path-loss model in multipath environment Intel Model for TGad [2] ScenarioPL(d0), dB n σ S dB Conference room LOS 32.52.00 Conference room NLOS 51.50.63.3 Updated in next sections of the document

6 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 6 The Earth-Plane Model applied to 60 GHz Why Considering this model? Selection of 2 predominant paths, mismatch antenna squint Additional sinusoidal spatial component depending on antenna height Hypothesis : Phase difference  between direct and reflected paths |Er|=> |  |=-1

7 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 7 The Earth-Plane Model applied to 60 GHz Applications to 60 GHz and 5 GHz Similar antenna heights at Tx and Rx may involve local path loss attenuation Different antenna heights at Tx and Rx are more recommended in the case of limited energy ray capture and beamforming Larger antenna aperture at the receiver side in dynamic environment is more recommended (handled device)

8 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 8 Path-Loss models and antenna impact In LOS, OLOS and NLOS, large dispersion of measurements in residential and Office environments for both sectoral and directive antennas Selection of measurements is done to generate accurate path-loss models

9 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 9 Path-Loss models and antenna impact Large dispersion of measurements may involve in the case of directive antennas non realistic path-loss models A filtering of experimental points is required

10 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 10 Path-Loss models and antenna impact Recommended path-Loss models by Orange Labs for residential Environments Orange labs models (update) Residential Sectoral ant (72°/60°) Residential Directive ant. (72°/10°) LOSNLOSLOS+NLOS LOSNLOS+LOS n 1.532.563.461.733.06 PL(d 0 ) (dB) 71.279.7961.5168.0162.54 σ S (dB) 3.925.0412.41.616.5 Error in (dB)0.751.685.991.617.65

11 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 11 Path-Loss models and antenna impact Recommended Orange Labs models versus Earth-Plane Model Earth-Plane Model shall be used to model antenna pointing mismatch Larger antenna aperture shall be preferred to reduce local path-loss attenuation resorting from restricted multipath combination

12 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 12 Conclusion Realistic path-Loss models require a accurate comparison between all available path-Loss models Antenna pointing mismatch may involve local attenuation that damage performance and link budget Earth-Plane path Loss model may be used to assess the impact of antenna height in the case of combination of 2 predominant paths and mismatch antenna alignment Path-Loss analysis show that directive antennas have to be considered in restrictive static case with Fixed devices and AP What are the appropriate models for link budget in the case of beamforming?

13 doc.: IEEE 802.11-09/1121r0 Submission November 2009 I. Siaud, Orange LabsSlide 13 References [1] IEEE doc. 802.11-09/0334r0 “Channel Models for 60 GHz WLAN Systems ” [2] A. Maltsev, E. Perahia, R. Maslennikov, A. Khoryaev, A. Sevastyanov, "Path-Loss Models for propagation channel models", IEEE doc. 802.11-09/0553r1, May 2009. [3] P. Pagani, N. Malhouroux, I. Siaud, "Characterization and modeling of the 60 GHz indoor channel in the office and residential environments, IEEE802.15.3c doc. n° 15-06- 0041-00-3c, January 2006. [4] S.K.Yong, "TG3c Channel Model Final Report Presentation", IEEE 802.15-06-0483- 02_003c, September 2007 [5]P.F.M. Smulders and L.M. Correia, “ Characterization of Propagation in 60 GHz Radio Channels ”,Electronics & Communication Engineering Journal, pp. 73 – 80, 1997. [6] H. Yang, P.F.M, Smulders, M.H.A.I Herben,. "Channel characteristics and transmission performance for various channel configurations at 60 GHz". EURASIP Journal of Wireless Communications and Networking, 2007(19613), 1-15.

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