Kick-off Meeting February 16, 2011

1. Welcome toEQ2440 Project in Wireless CommunicationandEQ2430 Project Course in Signal Processing and Digital Communications Kick-off Meeting February 16, 2011 Per Zetterberg School of Electrical Engineering

2. Program • Who are we? • Introduction to the course. • Presentation of the projects. • Application form.

3. Who are we? Per Zetterberg Course responsible Course assistants SenayNegusse Mattias Andersson Samer Medawar MaksymGirnyk

4. Course Facts • Credits: 12. • Grade: ECTS. A-F. • Group work. • Number of students per group 4-7 : Real-time based projects (Smartphone/android or Ubuntu) 2-3 : Matlab projects. • You choose among a set of “eligible” projects. • We form groups and assign a leader. • One Project assistant per group. • Course responsible: Per Zetterberg. • Prototype responsible: You! • Goals and time-table are specified, how to achieve this is up to the team. New this year!

5. Areas groups will work with • Algorithms (Matlab). • Project management. • Reports (Word or LaTeX) • Video (upload to youtube) • Web-pages. • Oral presentation (PowerPoint) • Setting up experiments, connecting cables. • Integrating. • Debugging, debugging, debugging. • Smartphone-programming (android, eclipse) • PC-programming (matlab-GUI or gcc-realtime) • Radio experiments. Some will work with

6. Real-time based projects New this year! • Real-time processing on smart-phone or Ubuntu PC. • Receiving data from sensors (e.g. A/D converters) transmitting data on actuators (e.g. D/A converters). • Presentation on of results on PC. • The signal processing in real-time is one of the major challenges due to the resulting code/algorithm structure and computational-time constaints. Group member roles: • Programmer. • Matlab/theory developer. • Group leader/generalist. 4-6 students per group.

7. USRP based projects • USRP = Universal Software Radio Peripheral • Used to transmit and receive wideband (4-8MHz) signals over real radio transmitters and receivers. • Matlab interface to download and upload I&Q samples for off-line development. • Real-time implementations sre also possible. • The signals are distorted by real-world RF-impairments (non-linearities, intersymbol-interference, phase-noise, frequency offset). • Developing and analyzing algorithms under real-world distortions is one the main challenges.

8. Smartphone/android based projects Features used in our projects: • Display : plots and text. • Microphone. • Loudspeaker. • Magnetometer measurements. • Wifi RSSI measurements. • Send data using Wifi. • Acceloremeters. • Touch screen.

9. Group work • One group member is group leader. • Several tasks has to solved at the same time. • Group members will have to specialize in different areas. • Project plan. • Weekly meetings and reports. • Examination is individual so every member has to contribute proportionally. • Individual examination and reflective diary

10. Programmers: Rush before Easter break! dc • Around 5 persons per group. • Typical: 2 programmer + 2 theory + 1 leader • Intense programming study the first 3-weeks (until Easter). • Recommended: Group meeting before course start. Select programmers.

11. What would be your advice to a student who chooses this course next year ? • Don’t choose another course at the same period. Start really early with everything. • Start working from the beginning • Work hard in the beginning and try to ease up in the end • Work hard in the beginning of the project • Start working from the first day, and don’t take more than a week off, during the Easter • Choose it, but take it alone, with nothing else. • Work work work. • Take the course if you like to work hard. • Start early. Implement on DSP asap. • Don’t read other courses in parallel • Take it!

12. Eligible Projects • Wireless Ethernet tunnel (USRP project). • OFDM with phase-noise compensation (USRP project). • Sound radar(smartphone/android) • Teleconference with noise cancellation (smartphone/android) • WiFi finger-print. 1-2: USRP projects. 3-5: Android projects. All real-time projects except #2. Approx. 5 students per group project except project #2 with approx. 3 members.

13. Project #1:Wireless Ethernet tunnel • Modulation/demodulation • Coding • Automatic repeat request (ARQ) • Multiple Access • Surf over your own air interface! Wall Connect Ethernet USRP USRP Surf here Ethernet Tunnel

14. Project #2:OFDM with phase-noise compensation • Phase-noise causes ISI • Phase-noise prevalent at 60GHz. • Low-cost oscillator=> large phase-noise. • Experiment on USRP. Ideal OFDM TX TX RX RX Subcarrierss Subcarrierss Subcarrierss Phase-noise OFDM Subcarrierss

15. Project #3: Sound Radar Measure distance to wall using smartphone Walll Measure the distance the wall directly using an acoustic radar pulse OR Measure the distance to the floor using an acoustic radar pulse Point the phone to the edge between the wall and the floor Measure θ using the accelerometer and calculate the distance to the wall Navigation in smoked room!

16. Project #4: Teleconference with noise (interference) cancellation Internett Noise Conference room Talk Talk • Echo cancellation • Noise suppression • Use both conference microphones

17. Project #5:WiFi finger-print AP AP AP AP • Constructmapof RSSI measurements. • Usemap and measurementstoestimatelocation. • Hot topicfor wireless systems.

18. Project Application Form • Deadline February 24. • Name, project choice, skills. • Group formation by March 14. • Project manager assigned (group can request change). • More information on projects on course homepage: http://www.kth.se/ees/utbildning/kurshemsidor/signal-commth/EQ2430/VT11-1

19. Before you go! • Remember: intense programming learning during first three weeks. • Sign the participant list and fill in your email. • Take a “project application form”. • Watch the course web-pages:http://www.kth.se/ees/utbildning/kurshemsidor/signal-commth/EQ2430/VT11-1 • See you March 21 at 13.15 in D32 if not earlier!