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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Analysis of the angular characteristics in the 60 GHz indoor propagation channel] Date Submitted: [12 January 2006] Source: [P. Pagani, N. Malhouroux, I. Siaud, V. Guillet ] Company [France Telecom Research and Development Division] Address [4 rue du Clos Courtel, BP 91226, F Cesson Sévigné, France] Voice:[], FAX: [], [] Re: [This file is the slides for c] Abstract: [This contribution presents a statistical study of the angular characteristics for the 60 GHz propagation channel in a typical indoor environment. The results may serve as a basis for a 60 GHz channel model including Direction of Arrival information.] Purpose: [Contribution to IEEE c Channel Modeling sub-group] Notice: This document has been prepared to assist the IEEE P 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 acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P P. Pagani, France Telecom Tony Pollock, NICTA
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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 Analysis of the Angular Characteristics in the 60 GHz Indoor Propagation Channel P. Pagani, N. Malhouroux, I. Siaud, V. Guillet P. Pagani, France Telecom Tony Pollock, NICTA
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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 Outline Motivation Preliminary observation Wideband measurement campaign Angular analysis Conclusion P. Pagani, France Telecom Tony Pollock, NICTA
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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 Motivation IEEE c Task Group currently studying possible solutions for High Data Rate WPANs operating at 60 GHz For the design of such systems, good knowledge of the transmission channel properties is necessary Directions of Departure and Arrival (DoD, DoA) of the propagated waves are important parameters of the 60 GHz channel Doppler spectrum, MIMO systems, … This contribution provides an experimental analysis of the angular characteristics for the millimeter wave propagation channel Research work performed within the sixth Framework Program of European Commission integrated project MAGNET ( P. Pagani, France Telecom Tony Pollock, NICTA
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France Telecom propagation expertise
<month year> doc.: IEEE <doc#> January, 2006 France Telecom propagation expertise Channel measurement laboratory Frequency domain and time domain wideband channel sounders Large number of measurement campaigns for different frequencies (900/1800 MHz, 2 GHz, ISM and UNII bands, UWB, 60 GHz) in different environments (indoor, urban, rural, …) and different configurations (SISO, MIMO, …) Simulation tools for propagation analysis Propagation model based on ray-tracing and Uniform Theroy of Diffraction Propagation models Narrowband: GSM, DCS Wideband: UMTS, WiFi, UWB, millimeter waves P. Pagani, France Telecom Tony Pollock, NICTA
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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 The IST MAGNET project Personal Network concept Flexible PHY and MAC layer for WPANs Adaptive networks connected to WLANs, UMTS Leadership of the cluster UWB-MC Propagation studies : The UWB versus WB propagation modelling (CEPD, MASCARAA, 3GPP2 Publications : Magnet workshops WWRF, ECPS, SEE P. Pagani, France Telecom Tony Pollock, NICTA
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Preliminary observation
<month year> doc.: IEEE <doc#> January, 2006 Preliminary observation Rx antenna + DoA diagram Rx antenna + DoA diagram Tx antenna in direct LOS position Tx antenna in offset position Narrowband radio channel measurements at 60.5 GHz with rotating directive antenna Significant propagation paths with different DoA P. Pagani, France Telecom Tony Pollock, NICTA
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Wideband measurement campaign Measurement setup
<month year> doc.: IEEE <doc#> January, 2006 Wideband measurement campaign Measurement setup Vector Network Analyzer measurements with 1024 MHz bandwidth around 60.5 GHz Local measurements over a 10 x 10 sensor virtual array, with 0.4 λ spacing Use of horn and dipole antennas Indoor measurements at different Access Point (AP) or Terminal (T) locations P. Pagani, France Telecom Tony Pollock, NICTA
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Wideband measurement campaign Measured scenarios
<month year> doc.: IEEE <doc#> January, 2006 Wideband measurement campaign Measured scenarios Four measurement scenarios, depending on AP position in the room (middle of the room, angle) Location of the sensor array (Terminal, Access Point) Type of antenna (Dipole, Horn) Parameter Scenarios A B C D AP position in the room Middle Angle Location of the sensor array (for DoA analysis) T AP Array orientation XY XZ AP antenna Dipole Horn T antenna P. Pagani, France Telecom Tony Pollock, NICTA
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Angular analysis Beamforming technique
<month year> doc.: IEEE <doc#> January, 2006 Angular analysis Beamforming technique Measured function: Angular Delay Power Spectrum P(θ, φ, τ) Power distribution with respect to elevation θ, azimuth φ and delay τ Classical beamforming technique (Chebyshev window, 20° angular resolution) Example of decomposed space-time diagram Corresponds to 1 measured array P. Pagani, France Telecom Tony Pollock, NICTA
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Angular analysis Angular spread in the azimuth plane
<month year> doc.: IEEE <doc#> January, 2006 Angular analysis Angular spread in the azimuth plane Larger angular spread with a dipole antenna (scenarios B and D) w.r.t. a horn antenna (scenarios A and C) P. Pagani, France Telecom Tony Pollock, NICTA
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Angular analysis Angular spread in the elevation plane
<month year> doc.: IEEE <doc#> January, 2006 Angular analysis Angular spread in the elevation plane Smaller angular spreads in the elevation plane w.r.t. azimuth plane Multipath effects mainly affect the DoA in the azimuth plane P. Pagani, France Telecom Tony Pollock, NICTA
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Angular analysis Number of distinct beams NX above a given threshold X
<month year> doc.: IEEE <doc#> January, 2006 Angular analysis Number of distinct beams NX above a given threshold X Threshold Median NX value Scenario A Scenario B Scenario C Scenario D X = 3 dB 1 X = 10 dB X = 15 dB 2 X = 20 dB 3.5 4 3 6 Strong attenuation > 15 dB of the secondary propagation beams P. Pagani, France Telecom Tony Pollock, NICTA
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doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> January, 2006 Conclusion Narrowband directional measurements highlighted the presence of multiple propagation paths with different DoA Wideband measurements were performed with 1024 MHz bandwidth for various Terminal / Access Point locations and antenna configurations DoA information was extracted from virtual array measurements Results show a larger angular dispersion in the azimuth spread than in the elevation plane A simple propagation model could include azimuth DoA only Secondary beams present a strong attenuation Most energy propagates via one main beam More Questions? P. Pagani, France Telecom Tony Pollock, NICTA
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