¶ Week 1 (5/28 - 5/30)
We installed and familiarized ourselves with GNU Radio.
We also explored the architecture of the Orbit testbed.
Reviewed several papers to gain insights into the current state of 5G networks and the interference mitigation techniques used across different frequency ranges.
Familiarized ourselves with the task of our research:
We will be emulating 5G Base Stations and other terrestrial network receivers on the FR3 spectrum. Using SDRs (software-defined radios) on the COSMOS testbed. We can simulate certain scenarios regarding interference directly through a software interface and generate Signal to Interference and Noise Ratio (SINR) data to train machine learning models to help mitigate interference.
¶ Week 4 (6/17 - 6/20)
Designed an SNR implementation for a generic FM transmitter.
Finished designing the OFDM transmitter.
Began fine-tuning the SNR implementation for OFDM transmissions.
Emulated a DVB Satellite Transmitter in GNU Radio for the ORBIT Sandbox 1 - ran into some issues with existing implementations.
Formulated specific plans for our data collection experiments:
Experiment 1 (SAT Reception)
- SAT Transmitter
- SAT Receiver
- 4 sensors that compute the FFT of the received signal
Experiment 2 (5G Interference)
- 5G Terrestrial Transmitter
- SAT Receiver
- 4 sensors that compute the FFT of the received signal
Experiment 3 (Network Coexistence)
- SAT Transmitter
- SAT Receiver
- 5G Terrestrial Transmitter
- 4 sensors that compute the FFT of the received signal
Designed the neural network's input/output formatting.
¶ Week 7 (7/8 - 7/11)
Finalized a plan for SINR calculations in the scope of the experiment:
Step 1: Use 1st SNR implementation with satellite transmitter and receiver to measure signal and noise powers.
Step 2: Use 2nd SNR implementation with the OFDM transmitter and receiver to measure the second signal power (equivalent to interference values).
Step 3: Use the three values to calculate the SINR values that would occur if both OFDM transmitter and satellite were used simultaneously.
Tested SNR implementations with Sattelite and OFDM transmission on ORBIT nodes as well as the Outdoor Node with a 3G center frequency. Received accurate power values, so the SINR implementation to gather data has been completed.
Continued working on the structure of automating experimental data collection:
¶ Week 8 (7/15 - 7/18)
Developed and Tested a Bit Error Rate (BER) GNURadio flowgraph on the satellite receiver.
Created a script that automates the collection of the data from the experiments.
Explored OFDM overlap in the band, and developed a methodology to utilize the collected data.
Performed 500 measurements.
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¶ Week 9 (7/22 - 7/25)
Performed an additional 2500 measurements and implemented the neural network.
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¶ Week 10 (7/29 - 8/1)
Final Presentation:
Please view the file "M06 - 5G and Satellite Network Coexistence in the FR3 Spectrum.pptx" in the attachments.