Open AccessMulticarrier modulation with variable peak‐to‐average power ratio using partial fast Fourier transform
Author(s) -
Nayar Himanshu,
Ribeiro Vinay J.,
Mallik Ranjan K.
Publication year - 2015
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.1086
Subject(s) - orthogonal frequency division multiplexing , transmitter , frequency division multiplexing , modulation (music) , electronic engineering , computer science , reduction (mathematics) , fading , rayleigh fading , multiplexing , channel (broadcasting) , telecommunications , mathematics , algorithm , engineering , physics , acoustics , geometry
The authors present a novel frequency division multiplexing scheme which can generate a signal whose worst‐case peak‐to‐average power ratio (PAPR) is tunable by an input parameter; they call this scheme tunable PAPR frequency division multiplexing (TP‐FDM). Special cases of TP‐FDM are orthogonal FDM (OFDM) and single carrier (SC) modulation. Unlike several other proposed PAPR reduction schemes, TP‐FDM requires no per‐symbol side information to be sent from transmitter to receiver. TP‐FDM has overall computational requirements almost the same as OFDM. The author's study of the symbol error rate (SER) of TP‐FDM in a Rayleigh fading channel shows that higher PAPR signals give a better SER performance. Thus, instead of choosing either of the extremes, OFDM and SC modulation, as is currently done in some cellular systems, one can tune the PAPR with TP‐FDM to the maximum suitable for the transmitter and receiver device electronics, so as to minimise SER. They compare and contrast TP‐FDM with transform precoded OFDM methods in terms of SER and PAPR. They also extend TP‐FDM to a multi‐user scenario.