Analysis of GFDM-OQAM Performance Using Zero Forcing Equalization

Abstract

The demand for higher data rates and lower latency is driving the rapid development of cellular and communication system. GFDM is the successor to the communication system for the waveforms of future cellular networks. GFDM is a block-based multi-carrier technique where each subcarrier is formed with a non-rectangular pulse-shaped filter increase the location of the pulse frequency called pulse shaping. Offset-QAM Modulation (OQAM) can achieve better spectral efficiency. In this research, the equalization used is in the form of Zero forcing (ZF) equalization to detect the original signal sent by the sender. The result of this research indicated that the GFDM OQAM system using Zero Forcing equalization has a better BER value than the GFDM OQAM system. The GFDM OQAM without ZF obtained BER value of 0.1675 at 0 dB SNR and 0.05854 at 15 SNR. While the BER value on GFDM OQAM with ZF decreased BER from 0.1989 at 0 dB SNR to 0.0272 at 15 dB SNR, then the greater the Roll-off factor value used, the higher the BER value.