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esafak 4 days ago

Yet another thing from school I've never used in the software world.

By the way, QAM is (still) used in 4G and 5G.

pythonguython 4 days ago | parent | next [-]

Come be a DSP engineer. I take FFTs of IQ data almost every single day

cycomanic 4 days ago | parent | prev | next [-]

Some variation of QAM will always be used in communication. As soon as you deal in with EM-waves, be it physics, engineering or even biomedical stuff you will have to deal with complex numbers, which by extension is dealing with I/Q signals. You probably don't need this for programming a server or a website, but it's indispensable for signal processing.

userbinator 4 days ago | parent | prev [-]

Work on low-level software for communications, especially RF, and you will see plenty of this stuff.

cycomanic 4 days ago | parent [-]

Not just RF, also optical communications. Really, the only domain left where PAM transmission is used is baseband communication for electronics, and datacom for optics.