Distributed Cooperative Routing for UWB Ad-Hoc Networks

— Ultra wide band (UWB) ad-hoc networks have attracted much research attention in recent years. This paper proposes and investigates a new distributed cooperative routing strategy that forwards data via a multi-hop route with the best instantaneous quality among available routes in UWB ad-hoc networks. The new method combines the physical and mediumaccess-control (MAC) layer mechanisms to identify the best route in a cooperative and distributed way. Using an example of a two-hop relay network where data from a source node can be forwarded by several possible relays to the destination node, we study two related issues. First, to support the cooperative and distributed routing, we devise a new, efficient estimation algorithm for received signal-to-noise ratio (SNR), which is used to determine UWB link/route quality. The estimation method is based on the fact that UWB links often adopt pulse position modulation (PPM) for transmissions, and in that context the transfered data in the rec...

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Shouhong Zhu, Kin K. Leung
• Keywords: Communications, Destination Node, Distributed Cooperative Routing, ICC 2007, Relays