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Beware of COBRA ! CO mputer B ased R adio and A ntennas

Technische Universität Dresden. Beware of COBRA ! CO mputer B ased R adio and A ntennas. Demonstrating future concepts of wireless communications !. Software Defined Radio Smart Antenna Concepts Implementation The Vodafone Chair. Software Radio Smart Antennas Implementation

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Beware of COBRA ! CO mputer B ased R adio and A ntennas

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  1. Technische Universität Dresden Beware of COBRA ! COmputer Based Radio and Antennas

  2. Demonstrating future concepts of wireless communications ! • Software Defined Radio • Smart Antenna Concepts • Implementation • The Vodafone Chair Software Radio Smart Antennas Implementation Vodafone Chair 

  3. High Diversity of Communications Systems ! GPRS EDGE DVB -T UMTS GSM DAB WLAN DECT Blue Tooth Data rate 10000 10 100 1000 100000 kBit/s Software Radio • Motivation • Idea • Demonstrator Concept • Hardware Smart Antennas Implementation Vodafone Chair Mobility high pedestrian indoor 

  4. Software Defined Radio - Idea Software Radio • Motivation • Idea • Demonstrator Concept • Hardware Smart Antennas Implementation Vodafone Chair Do as much signal processing as you can afford in software and you can • use the same hardware for different communications systems • simple download system updates and new features 

  5. Demonstrator Concept Software Radio • Motivation • Idea • Demonstrator Concept • Hardware Smart Antennas Implementation Vodafone Chair Antennas RF-Components Receiver Transmitter Signal Processing 

  6. Smart Antennas - State of the Art Software Radio Smart Antennas • State of Art • Theory • MIMO Systems • Demonstrator Features Implementation Vodafone Chair TX-Diversity at BS Sectorized Antennas Beamforming at BS Space-Time Coding GSM,UMTS WLAN, UMTS GSM,UMTS 

  7. Theory of Multi Antenna Systems (MIMO) 30 25 20 Throughput [bit/s/Hz] 15 10 5 0 0 5 10 15 20 25 30 6 times more bits over a radio channel @ SNR of 20 dB ! Signal to Noise Ratio [dB] Software Radio Smart Antennas • State of Art • Theory • MIMO Systems • Demonstrator Features Implementation Vodafone Chair 

  8. MIMO-Systems D-BLAST, Multi-Stratum-Space-Time-Codes Multiple Data Streams over all antennas (high data rate & robustness) Software Radio Smart Antennas • State of Art • Theory • MIMO Systems • Demonstrator Features Implementation Vodafone Chair Receiver Transmitter Space-Time-Coding One data stream over multiple TX-antennas (robustness) V-BLAST One data stream for each antenna (high-data rate) 

  9. Demonstrator Features • Direct Sequence Spread Spectrum System • Compliant with UMTS-Uplink • Physical Layer implemented • Includes true synchronization • Usage of multiple antennas (currently 2 x 2) Achievements: • Space-Time-Channel measurements • Performance Evaluation Space-Time-Algorithms • General Software Radio Framework including GUI’s Software Radio Smart Antennas • State of Art • Theory • MIMO Systems • Demonstrator Features Implementation Vodafone Chair 

  10. Scalable Transmitter Setup IQ-Mod PPC 7400 Software Radio Smart Antennas Implementation • Transmitter • Receiver Vodafone Chair UMTS Spreading GUI Data Source RRC Filter RRC Filter Host PC PPC 7400 D/A Converter ICS 660 To RF and antennas Lowpass Lowpass Sampling rate: 7.68 MHz Frequency Output: Baseband Bandwidth: 4.68 MHz 

  11. Scalable Receiver Setup Software Radio Smart Antennas Implementation • Transmitter • Receiver Vodafone Chair ICS 660 PPC 7400 From RF and antennas ICS 660 PPC 7400 RRC Filter Demod Lowpass A/D Host PPC 7400 Frequency Sync. GUI 3-Finger-Space-Time RAKE-Despreader Time Sync. Antenna Combiner Sampling rate: 61.44 MHz (16x chiprate) Frequency Input: 15.36 MHz (IF = 4x chiprate) Bandwidth: 4.68 MHz 

  12. Project Sponsors COBRA demonstrator is part of the Project Software Radio Smart Antennas Implementation • Transmitter • Receiver • Sponsors Vodafone Chair We would like to thank the following sponsors:  

  13. The - Chair and its Partners Project Partners Sponsors 1 professor 3 secretaries 4 sen. scientists • system adm. 2 post-doc’s 20 Ph.D. students 15+ Ms students Software Radio Smart Antennas Implementation Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s New since 2002 

  14. Research Topics Radio Networks Software Radio Smart Antennas Implementation Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s Network Operator Radio Modems Equipment Manufacturer DSP Hardware&Tools Semiconductor Vendor Physical Layer Research 

  15. Industry Partner Program (IPP) This sponsoring program provides an opportunity for companies • to support our research activities, • to enhance teaching, • to get in touch with our researchers and students. As a thank you our IPP members will receive • our quarterly newsletter "Dresden Mobile" • copies of MS-diploma theses and student project reports • copies of our publications and pre-prints • an invitation to our annual IPP event. The IPP membership therefore provides a platform to keep close contact with our chair. Software Radio Smart Antennas Implementation Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s IPP-Event on October 15, 2003 

  16. Software Radio Smart Antennas Implementation Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s • Founded 1999 • Based in San Jose and Dresden with a RF design center in Maynard, Massachusetts • Investors include Apax, Atlas, Lehman Brothers and Sony • 60 Mb/s Wireless LAN Chip (IEEE 802.11a/b) released in 2002 • 2002 Philips Semiconductors has acquired Systemonic 

  17. Mission Network Planning Software Radio Smart Antennas Implementation Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s Radioplan provides the technical essentials necessary to efficiently and effectively plan, build, and run mobile radio networks www.radioplan.de (Founded in 2000) Network Engineering 

  18. Software Radio Motivation Idea Demonstrator Concept Hardware Smart Antennas State of Art Theory MIMO Systems Demonstrator Features Technische Universität Dresden • Implementation • Transmitter • Receiver • Project Sponsors • Vodafone Chair • Sponsors • Research • IPP • Spin-Off‘s

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