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Software Defined Radio Testbed

This Senior Design Project focuses on creating a digital communication system utilizing Simulink and USRP-2 hardware. The system will implement various modulation schemes, including FSK and DBPSK, alongside a simplified 802.11 MAC layer to facilitate network communication. Key objectives include establishing point-to-point communication with a bit error rate of 10^-4 and transmission rates of 50 kbps. The project aims to assess MATLAB Simulink’s capabilities as an SDR platform and improve noise reduction and error rate by experimenting with multiple transmissions and image file transmission techniques.

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Software Defined Radio Testbed

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  1. Software Defined Radio Testbed Alex DolanMohammad Khan AhmetUnsal

  2. General Information Senior Design Project May 11-18 • Project Adviser: Dr. AdityaRamamoorthy • Graduate Assistant: Shizheng Li • Team Members: • Alex Dolan • Mohammad Khan • AhmetUnsal • Project Website http://seniord.ece.iastate.edu/sdmay1118

  3. Project Description • Design a digital communication system using Simulink and USRP-2 • Should work for different modulation schemes • Implement simplified 802.11MAC • Test MATLAB Simulink’s versatility as a SDR platform

  4. Project Plan Implement Physical Layer Implement MAC Layer Integrate the layers to form the network Test the overall system

  5. Project Design Physical Layer • Implement point to point communication • Achieve reasonable bit error rates & transmission rates • BER = 10^-4 • Transmission rate= 50 kbps • Implement digital modulation schemes • FSK • DBPSK

  6. Project Design MAC Layer Implement MAC (Multiple Access Control) Layer for network communication Implement simplified 802.11 MAC

  7. Current Status Currently working on • FSK (Frequency Shift Keying) Model • DBPSK (Differential Binary Phase Shift Keying) Model

  8. Current Status • MATLAB models work nicely (No frame errors) • Noise reduction schemes on over the air models need more work

  9. Current Status Also working on • Error rate improvement tactics • Transmitting the same bit multiple times and decoding on the receiver side • Image file transmission • Turning a binary image into frames and transmitting an image

  10. Schedule

  11. Questions?

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