INSTITUT FÜR NACHRICHTENTECHNIK UND HOCHFREQUENZTECHNIK An IR UWB Research and An IR UWB Research and Development Platform Development Platform for 802.15.4a for 802.15.4a Michael Fischer Ayse Adalan 2009-04-15 4 th UWB Forum on Sensing and Communication Vienna University of Technology
18
Embed
An IR UWB Research and Development Platform for 802.15 · INSTITUT FÜR NACHRICHTENTECHNIK UND HOCHFREQUENZTECHNIK An IR UWB Research and Development Platform for 802.15.4a Michael
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
An IR UWB Research and An IR UWB Research and Development PlatformDevelopment Platform
for 802.15.4afor 802.15.4a
Michael FischerAyse Adalan
2009-04-15
4th UWB Forum onSensing and Communication
Vienna University of Technology
2 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
OutlineOutline
Background
Platform Overview
Transmitter Components
Validation Measurements
Conclusion and Outlook
3 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Background
[1] IEEE 802.15.4a,Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications forLow-Rate Wireless Personal Area Networks (WPANs):Alternate PHYs,IEEE, Park Avenue, NJ, 2007
Platform based on architecture presented in[2] M. Fischer, A. Adalan, A.L. Scholtz, Ch. Mecklenbräuker;
Architecture of a Modular IEEE 802.15.4a Ultra-Wideband Transmitter; Informationstagung Mikroelektronik 08, Wien; 15.10.2008 - 16.10.2008; Österreichischer Verband fürElektrotechnik, Nr. 50 (2008); pp. 284 - 288
4 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Background IEEE 802.15.4a
IEEE 802.15.4a utilizing different frequency bands
Different modulation schemes and bitrates inside frame
Common parameters:pulse repetition frequency (PRF) = 499,2 MSymbols/spulse / chip duration TC = 2 nsternary symbols {−1, 0, +1}
5 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
System Overview
FPGA
MGT
MGT
3993,6 MHz124,8 MHz
10 MHz
+
−
CPU
Rx
7 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Xilinx Virtex II ProOutput via two MGTs (RocketIO)
Power combiner with baluns
Baseband Signal Generation (1)
[3] T. Buchgraber, Experimental Evaluation of the IEEE 802.15.4a Standard, Diploma Thesis, Graz University of Technology, 2008
8 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Baseband Signal Generation (2)
9 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Baseband Signal Generation (3)
10 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Pulse Shaping
Ensure compliance with constraints in time and frequency domainTake into account all components of the transmitterChannel dependant bandwidth
[4] A. Adalan, M. Fischer, A.L. Scholtz, Ch. Mecklenbräuker; UWB Transmit Signal Generation for Efficient Spectral Mask Utilisationin IEEE 802.15.4a; 3rd IEEE UWB Forum on Sensing and Communications, (2008), 24p
11 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
12 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Output Filter
Suppress higher mixing products
Ensure spectral compliance
Monolithic ormicrostrip solution
Possible combinationwith antenna
13 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Antennas
Different Vivaldi antennas and bow-tie antennas in use
[5] J. Shin, D. Schaubert; A Parameter Study of Stripline-Fed Vivaldi Notch-Antenna Arrays; IEEE Transactions on Antennas and Propagation, Vol. 47, No. 5, pp. 879-886, May 1999
[6] W. Sörgel, C. Waldschmidt, W. Wiesbeck, Transient Responses of a Vivaldi Antenna and a Logarithmic Periodic Dipole Array for Ultra Wideband Communication, IEEE Antennas and Propagation Society International Symposium, Vol. 3, pp. 592-595, Columbus, Ohio, June 2003
[7] W. Sörgel, C. Waldschmidt, W. Wiesbeck, An Ultra Wideband Aperture Coupled Bow Tie Antenna for Communications, EUROEM 2004, Magdeburg, July 2004
14 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Reference Synthesizer
3993,6 MHz synthesizer+5 dBm sine output−14 dBm rect. output
[8] R. Langwieser, M. Fischer, A.L. Scholtz, M. Rupp, G. Humer; Flexible Radio Frequency Hardware for a Software Definable Channel Emulator; International Conference on Telecommunications and Computer Networks (IADAT), Portsmouth, UK; 27.09.2006 - 29.09.2006; 5p
15 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Clock Divider
Differential clock for FGPA3993,6 MHz : 32 = 124,8 MHz32 = 2 · 4 · 4Single ended and LVPECL technology
Input: −14 dBmOutput: LVDS
16 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
System Overview
17 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Conclusion and OutlookConclusion and Outlook
Transmitter hardware up and runningReal time scope used as offline receiver
IEEE 802.15.4a standard compliant impulse-radio UWB platformHighly modular and flexible
Ongoing optimization of componentsAdaption of the platform to measurement campaignsDesign of dedicated online receiver hardware
18 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
References
[1] IEEE 802.15.4a, Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs): Alternate PHYs, IEEE, Park Avenue, NJ, 2007
[2] M. Fischer, A. Adalan, A.L. Scholtz, Ch. Mecklenbräuker;Architecture of a Modular IEEE 802.15.4a Ultra-Wideband Transmitter; Informationstagung Mikroelektronik 08, Wien; 15.10.2008 - 16.10.2008; Österreichischer Verband für Elektrotechnik, Nr. 50 (2008); pp. 284 – 288
[3] T. Buchgraber, Experimental Evaluation of the IEEE 802.15.4a Standard, Diploma Thesis, Graz University of Technology, 2008
[4] A. Adalan, M. Fischer, A.L. Scholtz, Ch. Mecklenbräuker; UWB Transmit Signal Generation for Efficient Spectral Mask Utilisation in IEEE 802.15.4a; 3rd IEEE UWB Forum on Sensing and Communications, (2008), 24p
[5] J. Shin, D. Schaubert; A Parameter Study of Stripline-Fed Vivaldi Notch-Antenna Arrays; IEEE Transactions on Antennas and Propagation, Vol. 47, No. 5, pp. 879-886, May 1999
[6] W. Sörgel, C. Waldschmidt, W. Wiesbeck, Transient Responses of a Vivaldi Antenna and a Logarithmic Periodic Dipole Array for Ultra Wideband Communication, IEEE Antennas and Propagation Society International Symposium, Vol. 3, pp. 592-595, Columbus, Ohio, June 2003
[7] W. Sörgel, C. Waldschmidt, W. Wiesbeck, An Ultra Wideband Aperture Coupled Bow Tie Antenna for Communications, EUROEM 2004, Magdeburg, July 2004
[8] R. Langwieser, M. Fischer, A.L. Scholtz, M. Rupp, G. Humer; Flexible Radio Frequency Hardware for a Software Definable Channel Emulator; International Conference on Telecommunications and Computer Networks (IADAT), Portsmouth, UK; 27.09.2006 - 29.09.2006; 5p
19 / 192009-04-15 UWB Forum Vienna – Michael Fischer – R&D Platform for 802.15.4a
Thank You for Your AttentionThank You for Your Attention
Questions?
Michael FischerVienna University of TechnologyInstitute of Communications and Radio Frequency [email protected]