Key technologies for the deployment of Wireless Sensor Networks are reduction of
manufacturing and management cost. Even though many efforts have been made to reduce …

In this paper, we experimentally investigate the combined effect of human, antenna
orientation in elevation direction and the ground effect on the Received Signal Strength …

Low-cost and low-power sensor nodes forming Wireless Sensor Networks have become
suitable for a wide range of applications during recent years. These networks demand the …

One of the recent tendencies for Wireless Sensor Networks (WSNs) that significantly
increases their performance and functionality is the utilization of mobile nodes. The paper …

Wireless sensor networks are often divided into clusters to gain high-performance and
prolong network lifetime. In this paper we analyze the network capacity of two different …

Energy-constraint is a crucial problem in wireless sensor networks (WSNs). Many sensor
node (SN) placement schemes and routing protocols are proposed to address this problem …

Deployment of senor nodes brings the challenging question on how to place the sensor
nodes in order to achieve a particular coverage degree with optimum number of nodes. An …

Wireless sensor networks (WSN) with hierarchical organizations have recently attracted a lot
of attention as effective platforms for pervasive computing. With power efficiency and lifetime …

Energy consumption is not well balanced for all sensor nodes in most of the energy efficient
routing protocols for wireless sensor networks (WSNs). In this paper, we optimize each …

Wireless sensor networks (WSN) consist of spatially distributed autonomous devices using
sensors to cooperatively monitor physical or environmental conditions. Generally, sensor …