| 18 | | * Tested out the differences between various modulations and sampling rates using both rx_ascii_art_dft to see the wavefroms and benchmark_rx to note the quality of the transmission ^([#hn Image 3])^ |
| | 18 | * Tested out the differences between various modulations and sampling rates using the programs rx_ascii_art_dft to see the waveforms and benchmark_rx to note the quality of the transmission ^([#hn Image 3])^ |
| | 19 | * Found the limits of the b210 USRPs (the physical radios) at certain modulations in terms of the maximum sampling rate they could handle before underwriting (found the limits of the hardware). |
| | 20 | *Began learning Bash to write my own scripts. |
| | 21 | === Week 4 |
| | 22 | * Wrote a bash program to simultaneously run the transmitter and receiver |
| | 23 | * Authored another program to cycle through various modulations and sampling rates, parse the output for the final line with the results, and write that into a file |
| | 24 | * Researched more about benchmark_tx and benchmark_rx to better understand the output |
| | 25 | * Plotted the results in MATLab for each modulation, comparing the sampling rate of the transmission vs the number of successfully received packets of data ^([#hn Image 4])^ |
| | 26 | * Varied other factors such as tx gain and the packet size (a total of 1Mb of data was transmitted in a number of packets, with a smaller packet size resulting in a larger number of packets, which creates more granular data) |
| | 27 | * Began connecting to a Spectrum Analyzer |
| | 28 | |
| | 29 | === Week 5 |
| | 30 | * Figured out how to see a signal on the spectrum analyzer by increasing the gain |
| | 31 | * Researched and practiced effectively using the Spectrum Analyzer and how to save and move files onto a personal computer |
| | 32 | * Conducted 49 tests to see the effects of varying gain and sampling rate on different modulations |
| | 33 | * Began analyzing the spectrum analyzer's output in MATLab to find the total leakage in each waveform and plotting it vs the sampling rate for each modulation at various gains ^([#hn Image 5])^ (defining the intended bandwidth to be within the 3dB bandwdith of the waveform from the peak of the signal to the peak of the noise floor) |
| | 34 | |
| | 35 | ===Week 6 |
| | 36 | * Attempted to use an alternative method to determine what constitutes leakage vs intended bandwidth to be a function of the sampling rate at which the signal was sent |
| | 37 | |
