Performance analysis of energy efficient asymmetric coding and modulation schemes for wireless sensor networks

Authors:
Govinda M. Kamath;Yogesh Shekar;G. Abhijith Kini;U. Sripati;Muralidhar Kulkarni
Affiliations:
Department of Electronics & Communication Engineering, National Institute of Technology, Karnataka, Surathkal, India;Department of Electronics & Communication Engineering, National Institute of Technology, Karnataka, Surathkal, India;Department of Electronics & Communication Engineering, National Institute of Technology, Karnataka, Surathkal, India;Department of Electronics & Communication Engineering, National Institute of Technology, Karnataka, Surathkal, India;Department of Electronics & Communication Engineering, National Institute of Technology, Karnataka, Surathkal, India
Venue:
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Year:
2010

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Abstract

Wireless Sensor Networks generally operate under severe energy constraints. In many cases, the networks are star connected with battery-powered nodes sensing data and sending it to a centrally-powered base station, whose energy constraints are more fore-bearing than that of the nodes. In this paper, an approach for energy efficient communication by using different channel codes on the base-station to node link (downlink) and node to base-station link (uplink) is proposed and anaiysed for such a network topology. This is in effect shifting complexity from the node to the base station while continuing to have the same BER performance. Also the use of more energy efficient modulation schemes are explored.