Interpreting Constellation Diagrams

This video explains how constellation diagrams can be used to diagnose various types of signal impairments in RF digital communications systems.

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Timeline:
00:00 Introduction
00:14 Suggested viewing
00:30 About constellation diagrams
01:33 Constellation vs. vector diagrams
02:18 Diagnosing modulation issues
03:31 Phase errors / phase noise
04:21 Compression
05:12 Noise
05:41 In-band spurious

[wenkaifang]

Detailed and clear explanation. Thank you.

[jopojopo]

Great to watch a video renewing my memory on a topic, i wrote an FPGA implementation years ago for (simulating hardware impairments in real-time). Great refresher! Thanks

[arenaengineering]

Thank you for a clear and understandable presentation of the information.

[InamKhan-kgwx]

thank you so much for such a great explanation

[lixiang]

Between is typically used when referring to two things, like "between a rock and a hard place, " while among is used for a greater number.

[ryanfeng]

But most modern communication system uses OFDM in which the I/Q value are put on the subcarrier. Therefore, most of conclusions in this video are no more valid.