Optimal Deployment of Relay Stations in Fixed Relay Network Employing Spatial Reuse

The paper investigates the advantages of employing spatial reuse on the deployment of relay stations in a multi-hop network. To quantify the gain and interference from spatial reuse, the concepts "interference level" and "reuse factor" are introduced innovatively. By comparing the performance of relay-based multi-hop systems with conventional single-hop systems, we conclude in this paper that a large number of relay stations can lead to better spectral efficiency if the distance is long enough. The relationship between optimal number of hops of a multi-hop chain and distance from the source station to the destination station is also derived.