Han-Ming Chang

Learn More
Wireless sensor networks (WSNs) are based on monitoring or managing the sensing area by using the location information with sensor nodes. Most sensor nodes need hardware support or receive packets with location information to estimate their location, and this needs lots of time or costs, and may have a huge error. In this paper we present a localization(More)
Wireless sensor networks (WSNs) are based on monitoring or managing the sensing area by using the location information with sensor nodes. These sensor nodes are sometimes random deployed, so they have to be aware to their location before starting their tasks. Most sensor nodes need hardware support or receive packets with location information to estimate(More)
In the third-generation mobile communications network, to address the actions the user can at any time any place for high-speed data transfer. So an extension of the use of 4G technology is WiMAX mobile network. Technology combines mobile communications and IP network integrated IP voice communications into a mobile network of the world. This development(More)
  • 1