How to use phase codes for modulating a pulse ?

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 Chu code, function lteZadoffChuSeq(19,37). The image shows the resultant wave

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