AbstractsPhysics

Nowadays, energy saving for wireless communication is more important than before. Lots of wireless devices are battery operated, like devices used in WLAN, ad hoc mode, sensor network, cellular network and so on. For example, Ad hoc networks which are composed of these wireless mobile devices can automatically establish peer to peer communication networks without using fixed infrastructure. Meanwhile, a lot of functions are added to the mobile devices. GPS and camera functions are integrated into the mobile phones. Energy consumed for the communication functions also grows more and more due to rapid improvement of communication technology and the demand for more communication between people, which means that we need larger battery capacity to increase the service time. Unfortunately, the battery technology does not improve much recently. Therefore in this thesis, we propose an energy saving method to extend the service time of wireless device.