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Cost-effective vehicular radar through minimally-modified IEEE 802.11 devices

Increasing safety and automation in transportation systems has led to the proliferation of radar and IEEE 802.11 dedicated short range communication (DSRC) in vehicles. Conceivably, vehicles could be equipped with both options, as DSRC enables detection around corners through communications as a supplement to standard radar detection. While DSRC devices are cost-effective, vehicular radar devices are currently expensive. We suggest an alternative where DSRC is used for both communications and radar. This is accomplished with minimal modification to existing IEEE 802.11 devices via algorithm processing only on frequency-domain channel estimates. Simulations show that our solution can deliver acceptable vehicular radar performance with the 10–20 MHz of spectrum provided by IEEE 802.11, demonstrating the feasibility of substantial cost reduction in vehicular radar.