COSMOS Emulation of 5G and Satellite Network Coexistence in FR3 Spectrum

Project Motivation: 5G and LTE networks currently operate on FR1 Spectrum (Sub ~6GHz), and FR2 in some cases, also known as mmWave. There is a push for 5G implementation on FR3 Spectrum (7.125 GHz - 24.25 GHz), as it would provide higher bit rates in a comparable range to the FR1 spectrum. However, some satellites, especially those for TV Broadcasting, operate within this spectrum. Therefore, we want to experiment with coexistence scenarios.

Technologies: ORBIT testbed, Linux, Python, C++, MATLAB, GNU Radio

Team: Arjun Prabhala & Nihal Shah

Advisors: Narayan Mandayam, Sreeram M., Rifat Bin Rashid

Week 1

Progress:

1. Familiarized with project background
2. Ran imaging on ORBIT node
3. Explored GNURadio

Slides: ​https://docs.google.com/presentation/d/1XZdzpMfxnq4JEk58zeUvRjsmbcgNSL34BzEbD0gNqYM/edit?usp=sharing

Week 2

Progress:

1. Researched OFDM
2. Explored SINR
3. Emulated 5G OFDM signal over ORBIT
4. Simulated LEO (Low Earth Orbit) satellites and coverage maps through MATLAB.

Slides: ​https://docs.google.com/presentation/d/12H7bJ18MbV9L3hO-X1SBmuOIxEJkcXjQIC-BXjZSFUM/edit?usp=sharing

Week 3

Progress:

1. Familiarized and created GNURadio custom blocks (SINR calculator, time signal multiplexer, etc.)
2. Researched DVB-S2 signal encoding and modulation.
3. Simulated DVB-S2 coverage in MATLAB

Slides: ​https://docs.google.com/presentation/d/1Ux0W6el2XMl9vqyWLWUc5Q8rqPco4IBStreYWhX97lc/edit?usp=sharing

Week 4

Progress:

1. Transmitted and received DVB-S2 signals on air
2. Ran an OFDM network on air
3. Familiarized with previous year’s GNURadio implementations

Slides: ​https://docs.google.com/presentation/d/14nrrbwUIsBkH1QGlygruCiPDe0KOlFXixyPaQ5rktEQ/edit?usp=sharing

Week 5

Progress:

1. Performed in-band analysis w/ smaller version of experiment (1 Sat RX, 1 Sat Tx, and 1 5G Tx)
2. Created node images & automation scripts for Sat RX
3. Compiled data and ran linear regression analysis in Excel
   1. Varied OFDM gain from 0-1

Slides: ​https://docs.google.com/presentation/d/1f0UJK9zPeP1Axp1UiYX_iMI6Fg1L4wwoo7NWZlT2-WY/edit?usp=sharing

Week 6

Progress:

1. Performed out-of-band (3.49 and 3.51 GHz) analysis w/ smaller version of experiment
2. Compiled data in excel & performed statistical analysis on quantities such as SNR, SINR, & FER

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Week 7

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Week 8

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Week 9

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