Integrated PTS and OSLR (IPTS-OS-LR) Technique for Reducing PAPR in FBMC-based OQAM Systems of MIMO-OFDM

Abstract

Peak-to-Average Power Ratio (PAPR) reduction is the most significant issue that needs to be addressed in MIMO-OFDM. The overlapping characteristics of neighborhood data blocks in Offset Quadrature Amplitude Modulation based Filter-based multi-carrier (FBMC-based OQAM) systems inspired digital communication in OFDM attracts the researchers towards this specific domain. The optimal data block in has to be selected for effective transmission and the neighborhood overlapping data blocks need to synchronized for ensuring minimum signal power as it is the unique option for facilitating air interface in the next-generation wireless networks. An Integrated PTS and OSLR (IPTS-OS-LR) scheme is propounded for FBMC-based OQAM Systems for maximal reduction of PAPR value and signal power by selecting the efficient data block and the tones for peak reduction is ensured through cancellation scheme triggered by OS-LR. Simulation results unveils the effectiveness of IPTS-OS-LR in reducing PAPR in comparison with the classical PTS and OS-TR techniques proposed for FBMC-based OQAM Systems. IPTS-OS-LR confirms an enhanced PAPR reduction rate of 3.1 dB which is nearly 34% and 23% greater to the reduction rate achieved by PTS and OS-TR techniques compared to the original FBMC-based OQAM signals. The BER of IPTS-OS-LR is also reduced to 22% better than the PTS and OS-TR techniques.