Configuration of Wireless Cooperative/Sensor Networks
Abstract
This report results from a contract tasking American University in Dubai as follows: The use of spatial diversity is an effective way to counter the adverse effects of fading in wireless channels. When employing more than one antenna at each node of a wireless network is not applicable, cooperation diversity protocols exploit the inherent spatial diversity of relay channels by allowing mobile terminals to cooperate and form virtual antenna arrays. In such cooperative networks, the use of relay terminals helps to transmit information from a source node to its destination. This strategy is especially imperative in sensor networks where the transmission power for each station has to be kept to a minimum to save battery life. Depending on how a partner station is used, two classes of cooperative diversity protocols can be defined, namely static and dynamic architectures. In static protocols, M relay terminals are used, each of which forward the message they receive from the source. Here, M is a pre-determined fixed value. In dynamic configurations, on the other hand, each relay terminal forwards its received message only upon request from the destination terminal. In such cases, the number of relay terminals is not preset in advance. It is thus possible, that the source node uses one or more terminals or none at all. The purpose of this research work is to devise suitable algorithms for configuring a cooperative/sensor network.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 25, 2008
- Accession Number
- ADA487709
Entities
People
- B. Maham
- Hamid R. Shafiee
- J. Vazifehdan
Organizations
- American University