You’re welcome Dhiman. There have been many suggestions regarding PAPR, but in different systems. For example, I have seen suggestions about MIMO OFDM, some for CO-OFDM, etc. And suggestions include mathematical methods in many cases. If you are interested in any particular area and you want me to introduce a paper, you can let me know. BTW, do you want more explanation about the part of my statement that you have repeated in your comment?
Regards