| 342 | | <b> Comparing wire to wireless </b> </center> |
| | 342 | <b> Wireless Transmission </b> </center> |
| | 343 | </td> |
| | 344 | </tr> |
| | 345 | <br> |
| | 346 | </table> |
| | 347 | |
| | 348 | <b> Analysis: </b> The left image shows the signal power that is received by transmitters connected via wire to the spectrum analyzer transmitting signals at various frequencies. As evident, they are showing a consistent (linear) increase in power as gain is increased. Conversely, the image on the right shows a rather scattered graph. This is the graph of the same transmitters transmitting via antennas, as opposed to wires. This shows that the wire transmission minimizes propagation errors while wireless transmission is prone to these errors. |
| | 349 | }}} |
| | 350 | |
| | 351 | |
| | 352 | {{{ |
| | 353 | #!html |
| | 354 | <br> |
| | 355 | <font color="red"><b> Experiment Eight: </b></font> Receiver Calibration <br><br> |
| | 356 | Calibrating the receivers is equally as important as calibrating the transmitters. The receiver was calibrated using a signal generator, a 30 dBm attenuator wire and wiserd. This calibration was to ensure that the power input and output was better hence giving us better signal power to distance data. |
| | 357 | <table cellpadding=5 width=10%> |
| | 358 | <tr> |
| | 359 | <td> |
| | 360 | <img src="http://www.orbit-lab.org/raw-attachment/wiki/Other/Summer/2015/aSDR1/trans.png" height=350> |
| | 361 | </td> |
| | 362 | <td> |
| | 363 | <img src="http://www.orbit-lab.org/raw-attachment/wiki/Other/Summer/2015/aSDR1/compare.png" height=350> |
| | 364 | </td> |
| | 365 | </tr> |
| | 366 | <br> |
| | 367 | <br> |
| | 368 | <br> |
| | 369 | <tr> |
| | 370 | <td> |
| | 371 | <center><b> Wired communication </b></center> |
| | 372 | </td> |
| | 373 | <td> <center> |
| | 374 | <b> Wireless Transmission </b> </center> |
