1 research outputs found
Depiction of Peak to Average Power Ratio Reduction Scheme and potentials for 5G
Peak to Average Power Ratio (PAR or PAPR) is
one of the most challenging issues in the operation of Orthogonal
Frequency Division Multiplexing (OFDM) for multicarrier
signals used in Fourth and Fifth Generation of broadband
cellular network technology (4G and 5G). There are numerous
PAPR reduction or also recognized as Crest Factor Reduction
(CFR) techniques, for instance Clipping, Coding, Dummy
Sequence Insertion (DSI), Tone Reservation, Active
Constellation Sequence (ACE), Partial Transmit Sequence
(PTS), and Selective Mapping (SLM) schemes. Among these
methods, SLM-based techniques are very attractive solutions
due to their good performance without additional out-of-band
radiations or in-band distortions. This study demonstrates a
performance analysis of an SLM-based method combined with
adding randomly generated dummy sequences to power-free
subcarriers. Simulation results show that the PAPR of the
OFDM based signal can be reduced efficiently by using
adequate number of dummies and tolerable number of
iterations, and that is a potential scheme for 4G and 5