On the rate of a linear multihop network with single directional antenna

The goal of this paper is to investigate the effects that take place after replacing an omni-directional antenna with a directional one at transmitter of a node of a wireless multihop, one-initial-source, one-final-destination, (N-1) relays network. Specially, we consider a cost-efficient one-way communication where a directional antenna at transmitter of a node is deployed to eliminate of possible interference in some neighboring nodes. Our results indicate a remarkable end-to-end bandwidth-normalized rate improvement in the power-limited regime while the directional antenna is under certain location of in the topology, as compared to simple multihop with spatial reuse involving the configuration of pure omni-directional antennas.