Title :
Lifetime maximization with predictive power management in selective relay networks
Author :
Mousavifar, S.A. ; Khattab, T. ; Leung, C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of British Columbia, Vancouver, BC, Canada
Abstract :
A diversity scheme which exploits the existence of a source-destination path to improve the lifetime and outage probability of a wireless selective relay network with Amplify-and-Forward (AF) relays is proposed and studied. The destination obtains a portion of the required signal to noise ratio (SNR) during the broadcast phase (Phase I) from the source and the remainder of the required SNR from a selected relay in the second phase (Phase II) of the transmission protocol. An algorithm based on an energy conserving dynamic transmit power threshold is proposed to improve the network lifetime. It is shown that the proposed scheme improves network lifetimes for the following four different relay selection strategies: Minimum Transmit Power (MTP), Maximum Residual Energy (MRE), Maximum residual-Energy Index (MEI), and Minimum Outage Probability (MOP).
Keywords :
diversity reception; probability; radio networks; transport protocols; amplify-and-forward relays; broadcast phase; diversity scheme; energy conserving dynamic transmit power threshold; lifetime maximization; maximum residual energy index; minimum outage probability; minimum transmit power; predictive power management; relay selection strategy; signal-to-noise ratio; source-destination path; transmission protocol; wireless selective relay network; Bit error rate; Broadcasting; Computer network management; Energy management; Engineering management; Power system modeling; Power system relaying; Protocols; Relays; Signal to noise ratio;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5450018
