Poster

Abstract

A wireless sensor network (WSN) [1] consists of small autonomous low-cost low-power devices that perform monitoring tasks. Often, sensors are required to monitor a large area and for that reason are sparsely deployed. As a result, direct sensor-to-sensor or sensor-to-base-station communication may not be possible due to high transmission energy costs over long distances. Various methods, such as directional antennas and cooperative communication, were developed to overcome the challenge of long-distance transmissions in WSNs. A different approach for long-distance transmissions in a sparsely deployed WSN is to use relay nodes, which is a lightweight (hardwareand protocol-wise) alternative to the other techniques. In this paper, we address bottleneck link capacity maximization in a multi-hop WSN under the Gaussian channel model through relay placement and power allocation schemes.