Title :
Energy efficiency evaluation of alternative MIMO — based sensor networks
Author :
Bravos, George N. ; Kanatas, Athanasios G. ; Efthymoglou, George
Author_Institution :
Dept. of Technol. Educ. & Digital Syst., Univ. of Piraeus, Piraeus
Abstract :
Low-cost and low-power sensor nodes forming wireless sensor networks (WSNs) have become suitable for a wide range of applications during recent years. These networks, due to their special functional characteristics, demand the implementation of energy-aware techniques in all layers. Recently a MIMO - based structure has been proposed to offer enhanced energy savings in WSNs under certain circumstances. Based on that idea several alternatives have been examined, mainly focusing on 2times2 MIMO systems. In this paper, we summarize two MIMO schemes and compare their performance in terms of energy efficiency. Moreover, we investigate more complex MIMO systems, emphasizing on 4times4 structures, and prove that depending on the scenario, such systems may offer remarkable energy gains.
Keywords :
MIMO communication; wireless sensor networks; alternative MIMO based sensor network; energy efficiency evaluation; energy-aware techniques; low-power sensor nodes; multiinput-multioutput system; wireless sensor networks; Energy efficiency; MIMO; Mobile agents; Receiving antennas; Sensor phenomena and characterization; Sensor systems; Sensor systems and applications; Transmitters; Wireless communication; Wireless sensor networks; Energy efficiency; Multiple-Input-Multiple-Output systems; Wireless Sensor Networks;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on
Conference_Location :
Cannes
Print_ISBN :
978-1-4244-2643-0
Electronic_ISBN :
978-1-4244-2644-7
DOI :
10.1109/PIMRC.2008.4699624
