46 research outputs found
Performance Analysis of Cooperative V2V and V2I Communications under Correlated Fading
Cooperative vehicular networks will play a vital role in the coming years to
implement various intelligent transportation-related applications. Both
vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications
will be needed to reliably disseminate information in a vehicular network. In
this regard, a roadside unit (RSU) equipped with multiple antennas can improve
the network capacity. While the traditional approaches assume antennas to
experience independent fading, we consider a more practical uplink scenario
where antennas at the RSU experience correlated fading. In particular, we
evaluate the packet error probability for two renowned antenna correlation
models, i.e., constant correlation (CC) and exponential correlation (EC). We
also consider intermediate cooperative vehicles for reliable communication
between the source vehicle and the RSU. Here, we derive closed-form expressions
for packet error probability which help quantify the performance variations due
to fading parameter, correlation coefficients and the number of intermediate
helper vehicles. To evaluate the optimal transmit power in this network
scenario, we formulate a Stackelberg game, wherein, the source vehicle is
treated as a buyer and the helper vehicles are the sellers. The optimal
solutions for the asking price and the transmit power are devised which
maximize the utility functions of helper vehicles and the source vehicle,
respectively. We verify our mathematical derivations by extensive simulations
in MATLAB.Comment: Internet of Vehicles (IoV), Vehicular communication, Antenna
correlation, Stackelberg game, Vehicle-to-infrastructure (V2I),
Vehicle-to-vehicle (V2V), Game theory, Cooperative vehicular network