Prototypes, Publications

Cooperative relaying in car-to-car communications

Programmable radio platform WARP

Cooperative relaying has been developed for wireless communications to mitigate the negative effects of small-scale fading caused by multipath propagation. A huge amount of research has been done in the past ten years to assess benefits and drawbacks of such techniques by simulations and analytical means. It is surprising, however, that only few studies with real-world measurements in realistic environments were published so far. The goal of a research team led by Christian Bettstetter at Klagenfurt’s NES institute is to contribute toward closing this research gap.

Based on an implementation of a simple cooperative relaying protocol on the programmable radio platform WARP, measurements were conducted to evaluate the packet delivery performance in a car-to-car communications scenario. The results will be published in IEEE Wireless Communications Letters. “We studied the ratio and temporal correlation of packet delivery for suburban and highway environments using three cars serving as sender, relay, and destination,” Günther Brandner, a researcher in the project team, explains.

Programmable radio platform WARP

Programmable radio platform WARP