Energy aware power allocation strategies for multihop-cooperative transmission schemes

Abstract— This paper deals with a cooperative decoded relaying scheme in multihop wireless network and the corresponding transmitters power allocation strategies for nodes belonging to a single primary route towards a destination. The proposed transmission strategy is referred as Multihop Cooperative Transmission Chain (MCTC). The MCTC is based on the relays of the same message by multiple previous terminals along the route and on their linear combination at the receiver to maximize the multihop diversity. Power allocations among transmitting nodes in the route can be obtained according to the average (not instantaneous) node-to-node attenuation using a recursive power assignement that can be employed locally with minimal signalling exchange among nodes. In this paper the MCTC with selection combining strategy at receivers and power assignement that minimizee the maximum spread of received power (minmax strategy) is able to better exploit the multihop diversity. In addition, for ad h...

• Type: Journal
• Year: 2007
• Where: JSAC
• Authors: Stefano Savazzi, Umberto Spagnolini
• Keywords: JSAC 2007, Multihop Diversity, Multihop Wireless Network, Power Allocations