Abstract:

Multicarrier modulation has drawn a lot of interest in the field of contemporary communications in order to satisfy the demand for a higher data rate. OFDM prototype filters exhibit poor stopband behaviour as a result of the employment of cyclic prefix and IFFT, which results in spectral leakage between the sub channels. The most popular MCM technique is OFDM. Due to the shortcomings of OFDM, a multicarrier system using offset quadrature amplitude modulation (OQAM) and filter banks has been proposed. The prototype filter for the FBMCOQAM system is made using the frequency sampling method of filter design, and the entire filter bank is made using exponential modulation. The main issue in every multi-carrier system is high PAPR. Simple PAPR reduction methods, including clipping, A-law companding, and U-law companding, are employed in the FBMC-OQAM system. Through the use of CCDF plots and BER plots, the system's performance is evaluated. According to simulation results, the proposed strategy performs better than the existing solutions in terms of PAPR reduction and BER.

Description:

OFDM, FBMC, BER, OQAM, Clipping, SNR, Companding, PAPR