Most of studies only consider that wireless sensor networks are equipped with only omni-
directional antennas, which can cause high collisions. It is shown that the per node …

Directional antennas have the potential to enhance the performance of wireless networks.
However, exploiting their capabilities requires channel access schemes specifically …

Connectivity is a crucial requirement for wireless sensor network deployments. Without
being able to guarantee a reasonable level of connectivity, many critical network operations …

The capacity of wireless ad hoc networks is affected by two key factors: the interference
among concurrent transmissions and the number of simultaneous transmissions on a single …

In this paper, multiple directional antennas are implemented on sensor network motes to
create angular diversity in wireless sensor networks. Wireless sensor systems deploying …

This paper considers the introduction of switched beam directional antennas in wireless
sensor networks. The paper compares the performance of an existing solution based on S …

In this article we analyze capacity improvement by directional antennas over omni antennas
in wireless sensor networks. The capacity in our analysis is the end-to-end per-node …

Directional antennas have been shown to have the potential to provide dramatic increases
in throughput and reduction in delay, while simultaneously requiring lower transmit power …

It is shown that the throughput capacity of wireless ad hoc networks using omni-directional
antennas (OMN networks) is significantly decreased with the increased number of nodes …

In this paper, we investigate the impact of antenna orientation on the performance of
wireless sensor networks. In the experiments conducted using Crossbow MicaZ motes we …