Combining millimeter-wave radar and communication paradigms for automotive applications : a signal processing approach.

PDFTech Reporthttp://ctr.utexas.edu/wp-content/uploads/106.pdfD-STOP/2016/106Technical Report 106DTRT13-G-UTC58Dedicated short range communicationsInformation disseminationIntelligent vehiclesLaser radarMillimeter wave communication systemsMobile communication systemsRadarSensorsSignal processingUnited StatesUniversity of Texas at Austin. Data-Supported Transportation Operations & Planning CenterChoi, JunilVa, VuthaGonzalez-Prelcic, NuniaDaniels, RobertUniversity of Texas at Austin. Data-Supported Transportation Operations & Planning CenterUniversity Transportation Centers Program (U.S.)US Transportation CollectionAs driving becomes more automated, vehicles are being equipped with more sensors generating even higher data rates. Radars (RAdio Detection and Ranging) are used for object detection, visual cameras as virtual mirrors, and LIDARs (LIght Detection and Ranging) for generating high resolution depth associated range maps, all to enhance the safety and efficiency of driving. Connected vehicles can use wireless communication to exchange sensor data, allowing them to enlarge their sensing range and improve automated driving functions. Unfortunately, conventional technologies, such as dedicated short-range communication (DSRC) and 4G cellular communication, do not support the gigabit-per-second data rates that would be required for raw sensor data exchange between vehicles. This paper makes the case that millimeter wave (mmWave) communication is the only viable approach for high bandwidth connected vehicles. The motivations and challenges associated with using mmWave for vehicle-to-vehicle and vehicle-to-infrastructure applications are highlighted. A high-level solution to one key challenge \ue2\u20ac\u201d the overhead of mmWave beam training \ue2\u20ac\u201d is proposed. The critical feature of this solution is to leverage information derived from the sensors or DSRC as side information for the mmWave communication link