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Spectral Efficiency of FBMC Over OFDM System
A. Abhishiktha1, S. Neeraja2, K.V. Satya Kumar3, A. Lakshmi Narayana4

1A. Abhishiktha, Department of Electrical, Electronic Communication Engineering, GITAM Deemed to be University, Visakhapatnam (Andhra Pradesh), India.

2S. Neeraja, Department of Electrical, Electronics and Communication Engineering, GITAM Deemed to be University, Visakhapatnam (Andhra Pradesh), India.

3K. V. Satya Kumar, Department of Electrical, Electronics and Communication Engineering, GITAM Deemed to be University, Visakhapatnam (Andhra Pradesh), India.

4A. Lakshmi Narayana, Department of Electronic Communication Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam (Andhra Pradesh), India.

Manuscript received on 23 November 2019 | Revised Manuscript received on 11 December 2019 | Manuscript Published on 30 December 2019 | PP: 235-237 | Volume-9 Issue-2S3 December 2019 | Retrieval Number: B10591292S319/2019©BEIESP | DOI: 10.35940/ijitee.B1059.1292S319

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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: Significant wireless broadband technology used in various cellular standards is Orthogonal Frequency Division Multiplexing (OFDM) which will make use of Multi Carrier Modulated (MCM) systems. Even though OFDM has numerous advantages, it is hard to employ OFDM for complex networks. It is very hard to establish synchronization in mobile environments as it is difficult to predict the Doppler shifts of different users, which results in inter carrier interference (ICI). Further, filters associated with OFDM carrier have comparatively large sidebands which outcomes in Out of Band (OOB) radiations. Insufficient spectral usage is provided by CP-OFDM by using more guard band. So the problems caused by traditional OFDM/CP-OFDM can be answered by employing a new system termed as Filter Bank Multi Carrier (FBMC) System. It is a form of MCM and it can be considered as an advanced cyclic-prefix (CP-OFDM). In OFDM, whole band gets filtered while in FBMC, each sub carrier band is independently filtered. The primary objective of this work is to relate the performance of 5G modulation technique such as FBMC against OFDM and to suggest an ideal waveform for 5G communication in regard to high spectral efficiency, spectral density, BER and less Peak to Average Power Ratio (PAPR).

Keywords: Filter Bank Multi Carrier (FBMC), Orthogonal Frequency Division Multiplexing (OFDM), PAPR, Spectral Efficiency.
Scope of the Article: Frequency Selective Surface