Open AccessAdvantages of Spectrally Efficient Frequency Division Multiplexing Over Orthogonal Frequency Division Multiplexing
Author(s) -
Aeidapu Mahesh,
S. Nivash,
S. Revathi
Publication year - 2020
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.h6319.069820
Subject(s) - orthogonal frequency division multiplexing , frequency division multiplexing , computer science , electronic engineering , qam , transmission (telecommunications) , multiplexing , telecommunications , quadrature amplitude modulation , interference (communication) , division (mathematics) , modulation (music) , bit error rate , physics , decoding methods , engineering , mathematics , acoustics , channel (broadcasting) , arithmetic
An analysis on Spectrally Efficient Frequency Division Multiplexing (SEFDM) is contrast with Orthogonal Frequency Division Multiplexing (OFDM) considering the impact on Peak to Average Power Ratio (PAPR) and nonlinearities within fibre. With respect to OFDM the sub-carriers in SEFDM signals are compressed adjacent to each other at a rate of frequency lesser than the symbol rate. At the receiver end we have utilized the Sphere Decoder which is used to recover the data to remunerate the Interference created by the compressed signals (ICI) faced in the system. This research shows the advantages by using SEFDM and evaluates its achievement. PAPR. when compared with OFDM, while effects of non-linear fibres are considered. The use of various formats of modulation going from 4-QAM to 32-QAM, shows that the SEFDM signals have a noteworthy increment in the transmission length with respect to ordinary signals.