This manuscript aims to present a comparative analysis of existing waveforms for ISAC in vehicular environments. Further, a novel multi-carrier framework based on Generalized Adaptive Spreading Modulation (GASM) is proposed for ISAC-enabled vehicular environments. The GASM waveform offers symbol spreading in both time and frequency domains with tunable spreading parameters.

This paper propose physical layer abstraction for multicarrier modulation techniques which could be used to speed up system-level simulations.