1 / 19

CHANNEL SOUNDING USING USRP2 & GNU-RADIO

CHANNEL SOUNDING USING USRP2 & GNU-RADIO . Under :- Prof S.N Merchant SPANN LAB,IIT Bombay. Channel Impulse Response And Coherence Bandwidth Estimation. By:- Rohit Sharma Jay Prakash.

favian
Download Presentation

CHANNEL SOUNDING USING USRP2 & GNU-RADIO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CHANNEL SOUNDING USING USRP2 & GNU-RADIO Under :- Prof S.N Merchant SPANN LAB,IIT Bombay Channel Impulse Response And Coherence Bandwidth Estimation By:- Rohit Sharma Jay Prakash

  2. Why?:- Motivation Increased Use of Wireless Devices Data-Intensive High Bandwidth Services Strain in capacity of RF Spectrum Channel Sounding UsingUSRP2 & GNU-RADIO Most Communication becomes impractical above 10GHZ in Microwave Region.

  3. Multiple propagation paths: • Line-of-Sight (LoS) and NLoS Invites Multipath invites:- • Scattering, • Reflection, • Diffraction. • Channel Becomes:- • Frequency dependent, • Time dependent and • Position dependent. Channel Sounding UsingUSRP2 & GNU-RADIO Multipath Effects of Channel Ultimately Coherence Bandwidthis adversely affected.

  4. Channel Sounding UsingUSRP2 & GNU-RADIO Flow Model

  5. Channel Sounding UsingUSRP2 & GNU-RADIO Apparatus

  6. Our Transmitter side Flow-Design Channel Sounding UsingUSRP2 & GNU-RADIO

  7. Our Receiver side Flow-Design Channel Sounding UsingUSRP2 & GNU-RADIO

  8. Host PC(Tx) Flow-chart Host Pc (Transmitter) Gb Ethernet USRP2 Channel Sounding UsingUSRP2 & GNU-RADIO PN Sequence Vector Source GNU-RADIO Unpack_to_pack BPSK Differential gray coded Modulation Digital_bert_tx.py USRP2 Uhd_Transmitter UHD-DRIVER

  9. Host PC(Rx) Flow-chart I USRP2 Gb Ethernet Host Pc (Receiver) File Sink Channel Sounding UsingUSRP2 & GNU-RADIO Q Data Processing I Read Complex_to_Binary File Sink(.dat) Windowing on Data-Stream Per PnSequence Window/Seq

  10. Data Processing II Window/Seq Cross Correlated Data Channel Sounding UsingUSRP2 & GNU-RADIO Cross_Corr Local Pn-Seq Channel Impulse Response Coherence Bandwidth Estimation Averaged Over Windows Frequency Correlation Function Average CIR FFT Power Delay Profile

  11. Host PC(Rx) Flow-chart Host Pc (Receiver) Uhd_Receiver Channel Sounding UsingUSRP2 & GNU-RADIO GNU-RADIO Demodulator Octave Based Post-Processing Stream Converter Digital_bert_rx.py File Sink(.dat) UHD-DRIVER

  12. Our Automated-Sounder APPLICATION Channel Sounding UsingUSRP2 & GNU-RADIO Hardware Software • Gnu-Radio 3.6.0 • Python • Octave • UHD_Driver (Latest stable) • USRP2(Tx,Rx) • Two PCs • Gb Ethernet Requirements:-

  13. Our Automated-Sounder APPLICATION Channel Sounding UsingUSRP2 & GNU-RADIO

  14. Impulse Response of a window Channel Sounding UsingUSRP2 & GNU-RADIO

  15. Power Delay of the window Channel Sounding UsingUSRP2 & GNU-RADIO

  16. Channel Impulse Response Channel Sounding UsingUSRP2 & GNU-RADIO

  17. Power Delay of the window Channel Sounding UsingUSRP2 & GNU-RADIO

  18. Power Delay Profile Channel Sounding UsingUSRP2 & GNU-RADIO

  19. Channel Sounding UsingUSRP2 & GNU-RADIO Frequency Correlation Function

More Related