Advantages of Spectrally Efficient Frequency Division Multiplexing Over Orthogonal Frequency Division Multiplexing
A. Goutham Sai Mahesh1, S Nivash2, Revathi S3
1A Goutham Sai Mahesh, Electronics and Communication Engineering, Vellore Institute of Technology, Vellore, India.
2S Nivash, Electronics and Communication Engineering, Vellore Institute of Technology, Vellore, India.
3S Revathi, Ph.D. in Optical Communication, Vellore Institute of Technology, Vellore, India.
Manuscript received on May 02, 2020. | Revised Manuscript received on May 15, 2020. | Manuscript published on June 10, 2020. | PP: 238-244 | Volume-9 Issue-8, June 2020. | Retrieval Number: 100.1/ijitee.H6319069820 | DOI: 10.35940/ijitee.H6319.069820
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: 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.
Keywords: Spectrally efficient frequency division multiplexing (SEFDM), Orthogonal frequency division multiplexing (OFDM), Optical fibre communication.
Scope of the Article: Frequency Selective Surface