Wideband Channel Modeling and Intercarrier Interference Cancellation for Vehicle-to-Vehicle Communication Systems

Abstract

In this paper, we propose a new regular-shaped geometry-based stochastic model (RS-GBSM) for non-isotropic scattering wideband multiple-input multiple-output vehicle-tovehicle (V2V) Ricean fading channels. By correcting the unrealistic assumption widely used in current RS-GBSMs, the proposed model can more practically study the impact of the vehicular traffic density on channel statistics for different time delays. From the proposed model, we derive the Doppler power spectral density (PSD) and find that highly dynamic Doppler spectrum appears for V2V channels. Excellent agreement is achieved between the derived Doppler PSD and measured data, demonstrating the utility of the proposed model. To combat the intercarrier interference (ICI) caused by highly dynamic Doppler spectrum in real orthogonal frequency division multiplexing based V2V systems, this paper proposes a new type of ICI cancellation scheme, named as precoding based cancellation (PBC) scheme. The proposed scheme can be easily implemented into real V2V systems with the same ICI mitigation performance as the current best ICI cancellation scheme that has high complexity. To further improve the performance of the proposed PBC scheme, a new phase rotation aided (PRA) method, namely constant PRA (CPRA) method, is proposed. Compared with the existing PRA method, the CPRA method has better performance and much less implementation complexity. Therefore, the proposed PBC scheme with the CPRA method is the best ICI cancellation scheme for real V2V systems.Index Terms-Vehicle-to-vehicle wideband channels, geometrybased stochastic model (GBSM), orthogonal frequency division multiplexing (OFDM), intercarrier interference (ICI) cancellation, phase rotation aided method.

A General 3-D Non-Stationary 5G Wireless Channel Model

“…Doppler frequencies caused by either the transmitter and/or scatterers and/or receiver should be taken into account. Wideband 2D GBSMs for V2V channels were proposed and validated via measurements in [33]- [35], where clusters were categorized into mobile clusters and static clusters. In V2V communications, transmitters and receivers may be lower than clusters on surrounding buildings.…”

Review on V2X, I2X, and P2X Communications and Their Applications: A Comprehensive Analysis over Time

“…Therefore, a new approach to palliate Doppler interferences based on a new inter-carrier scheme more efficient and less complex than previous used schemes is presented in [52]. Other authors have proposed the use of RADAR integrated in vehicles—as transmitters and receivers in V2V communication—in conjunction with conventional communication units in order to improve communication performance through the transmission of modulated information in the 24 GHz or 76 GHz spectrum provided by RADARs [53]. Nevertheless, other proposals go beyond the transmission based on radio frequency (RF) waves and propose the use of car headlights and taillights as a means of communication.…”

Ethical Analyses of Smart City Applications

“…Intravehicular communication focuses on data that is being shared between motor vehicles in a given area, such as multiple vehicles around a specific intersection or near a specific highway exit. This technology mainly works to minimize traffic incidents and improve traffic efficiency [35]. For this type of application to contribute positively, the exchanged data is required to be accurate, relevant, and meaningful during the communication.…”