FlexVehd: A flexible testbed for vehicular radio interfaces

We present ¿FlexVehd¿, a flexible radio testbed for experimental testing of transmission and reception algorithms in vehicular environments. The main feature of our testbed is to provide maximum flexibility to researchers when conducting their experiments. FlexVehd allows the user to implement in software the signal construction at transmission and its reconstruction at reception, because it incorporates the necessary interfacing mechanisms between high level programming languages and radio hardware. This benefits rapid prototyping of new transmission and reception techniques at a high abstraction level (i.e. Matlab/Simulink, C/C++...), while preserving the realism of experimental tests. In particular, we present an implementation of the IEEE 802.11p PHY layer and its experimental performance results for high vehicle speeds.