Suppressing Alignment

Post date: Jan 21, 2015 5:13:30 PM

Anas Tom (University of South Florida) and I have recently submited an idea to overcome the problems of OFDM-like signals (http://arxiv.org/abs/1412.6699). For the moment, we call the concept "suppressing alignment" which targets the PAPR and OOB power challenges of OFDM signal by using the channel information and inevitable CP duration. The good news is that it doesn't change the receiver structure as well as maintaining the OFDM structure at the transmitter side. It is interesting to see that CP is not only useful for equalization, synchronization, etc., but also effective for PAPR and sidelobe reduction via proper methods. I have recently started to think that the approaches which give more meaning to the inevitable redundancy of the system may be the key factor in the waveform design, rather than targeting the spectral efficiency. Here is the summary of the key idea of suppressing alignment.