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Spectrum Sensing with Software Radios

Progress Presentation. Spectrum Sensing with Software Radios. Team members: Eun Kim, Suen Guy Min, and Matt Dolter Advisor: Dr. Zhengdao Wang Group: May-1006. Project Plan. 1 st Semester Spent most of the time learning Cognitive Radio, USRP, GNURadio , Linux, Python

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Spectrum Sensing with Software Radios

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  1. Progress Presentation Spectrum Sensing with Software Radios Team members: Eun Kim, Suen Guy Min, and Matt Dolter Advisor: Dr. Zhengdao Wang Group: May-1006

  2. Project Plan • 1st Semester • Spent most of the time learning • Cognitive Radio, USRP, GNURadio, Linux, Python • 2nd Semester • Develop sensing program • Research sensing parameters • Key USRP Concepts • ADC rate (64MHz) -> decimation (20) -> quad rate (3.2MHz) -> sample size (32bits/sample) -> bps rate (102.4Mbits/second) -> byte rate (12.8Mbytes/second) • 12.8 MB/s is less than 32 MB/sec supported by USB

  3. Project Design • Sensing Method • Energy Detector • Considered Spectrum • 100-800 MHz • Sensing Hardware • USRP • Software • Python and GNURadio • Research Areas • Spectrum Characteristics • Noise Criterion • Sensing Time • Sensing Accuracy

  4. Detailed Block Diagram of Signal Transformations

  5. Plot Entire Spectrum FFT

  6. Plot of Channel Averages KCCI IA DES MOINES 31 On the air KDIN IA DES MOINES 50 On the air KDMI IA DES MOINES 56 Authorized to program test KDSM IA DES MOINES 16 On the air WHO- IA DES MOINES 19 Authorized to program test

  7. Initial Sensing Time Plot

  8. Remaining Time Plan

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