Abstract
Almost all of the existing routing protocols are designed based on a simplistic and idealistic physical layer model, and with minimum hop count as the metric for route selection. Without modification, they cannot work well with a realistic physical layer. A position-based stateless routing protocol with greedy forwarding is proposed for multihop WPANs based on a realistic OFDM UWB physical layer. The transmission radius R is closely related to the link quality, and is defined by PER achievable. The optimum value of R is selected to be the distance to achieve a PER between 1% and 5% by trading off the throughput and PFR. The simulation results show that this position-based greedy routing scheme with carefully selected transmission radius R works well for multihop WPANs based on OFDM UWB physical layer. When on-demand routing protocols are considered, we believe that the link quality related metrics would work better than hop count metric
Published Version
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