How do I generate 2 cos or 2 sin signals?

Hi:

I want to generate 2 cos or 2 sin signals.

How can I do in matlab or in hardware, and how can I use QAM for this question.

Answer 1

[Image Analyst]

I do that in my attached fft demo.

[Hünkar Hançer]

thank you for answer, accualy method is correct but ı want to 2 signal generate AM modulation wit QAM or TDM or FFT ,after demoluation. how can ı do ?

[Hünkar Hançer]

I want to like that , but it must be 1 sin and 1 cos, we should modulate and after demodulate?

[Image Analyst]

Sorry, I haven't worked with QAM or TDM. Try the File Exchange. Good luck.

[Hünkar Hançer]

thank you.

Answer 2

[Walter Roberson]

http://electronicdesign.com/analog/9-ways-generate-sine-wave