Abstract
High peak-to-average power ratio (PAPR) is one of the major limitations to orthogonal frequency division multiplexing (OFDM) systems. In an OFDM system, as the frame size increases, the PAPR probability performance will get worse. The so-called active constellation extension (ACE) algorithm has been proposed to effectively reduce the PAPR especially when the number of sub-carriers is large. To achieve low PAPR with small number of sub-carriers, a novel scheme, ACE with frame interleaving, is proposed in this paper. In our proposal, M frames with N sub-carriers will be combined into one super frame, then ACE algorithm is applied to reduce the PAPR of the super frame, the super frame with lowered PAPR will finally be divided into M OFDM frames for the transmission. The combining and dividing process is equivalent to the time interleaving. The proposed scheme requires no side information and can significantly reduce PAPR while maintaining small number of sub-carriers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
