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How to use phase codes for modulating a pulse

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Deboshree

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I am working on phase codes (examples - Frank, P1, P2, Zadoff Chu) to generate minimum side-lobes on matched filtering. I considered a sinosoidal carrier wave at 45 mHz45 mHz, and phase modulated with 37 bit Chu code. The image shows the resultant wave

phase-codes.jpgphase-codes.jpg

I want to generate a similar signal with a sequence of pulse with carrier signal at 45 mHz45 mHz.

Modulation like pulse position modulation are possible?
And will they be conceptually correct ?
If yes, then how to do them ?
The resultant signal will be used to modulate an optical source.
 

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