Energy-efficient cluster-based cooperative FEC in wireless networks

Authors:
Su Yi;Shivkumar Kalyanaraman;Babak Azimi-Sadjadi;Hsin-Yi Shen
Affiliations:
Turin Networks Inc., Petaluma, USA 94954;ECSE Department, Rensselaer Polytechnic Institute, Troy, USA 12180;Intelligent Automation Inc., Rockville, USA 20855;ECSE Department, Rensselaer Polytechnic Institute, Troy, USA 12180
Venue:
Wireless Networks
Year:
2009

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Abstract

In this article, we introduce a novel link layer cooperation technique in noisy wireless networks to improve overall system throughput and reliability, and to reduce the cost of retransmission and energy consumption. Under a cluster-based network design, Chase combining (Chase, IEEE Transactions on Communications 33(5):385---393, 1985) is used together with FEC to improve the link layer reliability. This approach is different from how combining is used in the conventional hybrid ARQ, which is in a sequential way. The analytical results and the simulations show that with the cooperation of nodes in a clustering network, the link reliability will be greatly improved with the same power consumption. We also show that not only transmission power is greatly reduced, but also the aggregate power consumption for a successful transmission and reception.