Abstract
The multicarrier transmission techniques have been the most beguiling one for the development of wireless communication systems like 4G, Long Term evolution and now the successor 5G. For 5G or fifth generation wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multi carrier modulation (FBMC) are the dominant waveform contenders. In this research paper, the disadvantages of OFDM have been addressed and it has shown that filter bank multicarrier (FBMC) could be a more effective solution. The comparative analysis of FBMC and OFDM has been performed based on Power Spectral Densities, sub channels, computational complexity and prototype filter comparison simulated using MATLAB.
Highlights
The evolution of internet and the growing demand of high data rate users have given Dynamic spectrum access networks a widespread attention in the recent years
The Orthogonal Frequency Division Multiplexing (OFDM) technique with cyclic prefix (CP-OFDM) that uses an orthogonal set of subcarriers is by far the most widespread case of multicarrier systems which have been anticipated for the purpose of sharing the various subsets of these subcarriers amid nodes [1] [2] installed for DSA
The main difference is the replacement of the OFDM with a multicarrier system based on filter banks, where the inverse fast Fourier transformation (IFFT) plus CPin is substituted by the synthesis filter bank (SFB) whereas
Summary
The evolution of internet and the growing demand of high data rate users have given Dynamic spectrum access networks a widespread attention in the recent years. The disadvantages of OFDM technique were overcome by a multicarrier communication system called as FBMC first proposed by Saltzberg [3] that delivers an improved spectral shaping of subcarriers than OFDM systems This is achieved by the careful designing of the prototype filter, which abridges equalization in the lack of CP and promises an additional effectual spectral utilization by diminishing interference across subcarriers [4].
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