Doppler Effect Compensation Using Zero Forcing Equalizers on FBMC-OQAM System with V2V Channel With Moving Scatterers

This study addresses the challenges associated with V2V communication systems that involve users and scatterers with random movement patterns. This configuration leads to the occurrence of the Doppler effect, which further deteriorates the Bit Error Ratio (BER) at the receiver’s end. To combat the Doppler effect, we utilized Zero Forcing (ZF) equalization in conjunction with Filter Bank Multi-Carrier (FBMC) technology employing Offset Quadrature Amplitude Modulation (OQAM). This strategy entails modifying velocities and increasing the number of scatterers. The simulation findings demonstrate the effectiveness of ZF equalization in mitigating the Doppler effect. At a velocity of 100 m/s, the utilization of the ZF technique yielded a BER of 1,699x10
⁻¹
, which is a noteworthy decrease in comparison to the BER of 2,578x10
⁻¹
. recorded in the absence of ZF. This reduction corresponds to a decrease of up to 59.53%, depending on the number of scatterers present. In addition, the most favorable outcomes were observed when the speed was set at 10 m/s, utilizing a total of 8 scatterers and employing ZF equalization. In contrast, the maximum BER was observed at a velocity of 100 m/s in the absence of ZF and with a total of 16 scatterers. This study highlights the potential of ZF equalization in improving V2V communication systems by mitigating the effects of the Doppler effect. It emphasizes the importance of selecting suitable velocities and scatterer numbers to achieve optimal performance.