LAUSR

A communication system of Vehicle to Vehicle (V2V) consists of a transmitter, a receiver, and scatterers which can move in random speeds and directions to generate the Doppler Effect that reduces communications system performance. The Doppler effect that occurs in V2V channel modeling is a combination of the Doppler effect on each of its constituent components. After being combined with the Orthogonal Frequency Division Multiplexing (OFDM) multi-carrier system, the signal received at the receiving end experiences attenuation due to the characteristics of the channel used. To analyze the attenuation factor received due to the influence of channel characteristics, the power spectral density parameter is used. Previous research was limited to modeling the V2V channel with moving scatterers, without knowing the effect of velocity on power spectral density. The purpose of this study was to examine the effects of velocity parameters of V2V’s components on power spectral density where scatterers moved randomly. Moving scatterers speed was classified into two categories, where the scatterers were faster or slower than the sender and receiver. The power spectral density was analyzed after combining Quadrature Phase Shift Keying (QPSK) modulation with multi-carrier OFDM. The results show that components with higher velocity yielded more damped power spectral density on the receiver that reached -0.7099 dB/Hz. Moreover, the number of scatterers that moved around the transmitter and receiver highly affected the magnitude of the Doppler effect. The largest Doppler Shift generated in this study was 13.5 kHz with attenuated power spectral density at -0.8646 dB/Hz.