Hardware implementation choices for vehicular telematics systems and simulation results

Two-way wireless communication subsystems (WCS) for voice and data applications will play a central role in future vehicular telematics systems. We discuss some of the design and hardware implementation choices for such wireless communication systems in this paper. Specifically, the impact of wireless communications infrastructure evolution in the U.S. and advances in enabling hardware technologies on the design choices of WCS are addressed. The paper also presents a radio test-bed based on the CDMA2K 1xRTT communication standard, implemented using an advanced system simulation tool. The motivation behind development of the test-bed is to assess the performance of ´direct IF digitization architecture´ for the proposed WCS in various wireless channels for different vehicle velocities. The simulation results will ascertain whether the design is suitable for future vehicular telematics systems.