Combining MIMO and Multihop – Based Transmissions on Energy Efficient Sensor Networks

Wireless S wide rang networks, demand th layers. Rec to offer e circumstan transmit d present a based on clusters. W transmissio the simple evaluate a MIMO – according The result energy effi Index Ter Output sys R electronics power, mu and comm These nod communic sensor ne composed densely d close to it. hostile en static and humidity, data rates range of them are i etc. O WSN is th batteries, restricted Combining MIMO and Multihop – Based Transmissions on Energy Efficient Sensor Networks eorge N. Bravos , Student Member, IEEE and Athanasios G. Kanatas, Senior Member, IEEE University of Piraeus Department of Technology Education and Digital Systems Wireless Communications Laboratory {gebravos, kanatas}@unipi.gr Low-cost and low-power sensor nodes forming ensor Networks (WSNs) have become suitable for a e of applications during recent years. These due to their special functional characteristics, e implementation of energy-aware techniques in all ently a MIMO – based structure has been proposed nhanced energy savings in WSNs under certain ces. On the other hand, the traditional way to ata in a WSN is via multiple hops. In this paper, we combined MIMO – multihop transmission scheme, the forming of clusters that we name MIMO – e investigate the performance of MIMO – multihop n in terms of energy efficiency, and compare it to MIMO scheme for several scenarios. Moreover, we n expression to optimize the distance between clusters, in order to maximize the energy gains to the channel state and the network’s node density. s demonstrate that important gains in terms of ciency can be achieved for several cases. ms –Energy efficiency, Multiple-Input-Multipletems, Wireless Sensor Networks