Understanding Error Vector Magnitude (EVM)
This video explains the fundamental concepts behind error vector magnitude (EVM), including what EVM is, how EVM is measured, and best practices when making EVM measurements.
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Timeline:
00:00 Introduction
00:17 Suggested Viewing
00:41 About digital modulation
01:44 About error vector magnitude (EVM)
03:05 Contributors to EVM
04:25 EVM and modulation order
05:27 Calculating EVM
06:19 EVM results
07:04 EVM vs. time / symbol
07:46 EVM vs. frequency
08:44 EVM vs. power
09:25 EVM vs. power vs. frequency
09:58 Instruments for measuring EVM
10:42 Measurement best practices
11:55 Summary