Modeling of power spectral density using correlated double ring channel model with OFDM for high mobility user on vehicular network

Anggun, Fitrian Isnawati and Jans, Hendry and Wahyu, Pamungkas and Titiek, Suryani Modeling of power spectral density using correlated double ring channel model with OFDM for high mobility user on vehicular network. UNSPECIFIED thesis, UNSPECIFIED.

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Abstract

Channel modeling using the correlated double ring concept on Vehicular Network communications systems has been developed previously. However, no such model has been incorporated into the OFDM multi-carrier system to simulate the effect of the transmitter and receiver velocity on the received signal quality. User velocity on the transmitter and receiver side produces a Doppler effect that damages the signal orthogonality on OFDM. In addition, the speed of the transmitter and receiver also affect the Power Spectral Density of the received signal. This paper used the Correlated Double Ring channel modeling to simulate the transmitter and receiver movement against the Power Spectral Density parameter with non-moving scatterers. The IFFT output of the OFDM transmitter b is consonant with the Channel Impulse Response (CIR) of the channel modeling output and coupled with the AWGN noise. Simulation is done by dividing the movement of sender and receiver into 3-speed regions, i.e. low speed, medium and high speed. Simulation results show the faster movement of the sender and receiver cause Doppler Shift larger and make the value of power spectral density parameters become getting muffled. Keywords—Doppler, OFDM, Power Spectral Density, Channel Impulse Response, Correlated Double Ring.

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