Cooperative MIMO and Hop Length Optimization for Cluster Oriented Wireless Sensor Networks
An energy-efficient multi-hop communications scheme based on cooperative multiple-input multiple-output technique is proposed for wireless sensor networks. The proposed method takes into account the modulation constellation size and transmission distance and effectively saves energy by optimizing hop distances with respect to the modulation constellation. Here, the equidistance hop length scheme as a conventional scheme is compared to the proposed method. In order to evaluate the performance of the proposed scheme, a qualitative analysis is taken in terms of energy efficiency. The analytical results indicate that the propose method can significantly save total energy consumption in comparison to the conventional one. The possible application of the proposed scheme can be an emergency monitoring system such as the forest fire detection; and this method can provide a longer lifetime of monitoring system.
KeywordsCooperative Communications Sensor Networks Multi Hop Hop Distance MIMO Energy Efficiency
- 2.Gai Y, Zhang L, Shan X (2007) Energy efficiency of cooperative MIMO with data aggregation in wireless sensor networks. Proceedings of IEEE Wireless Comm. Networking Conference, pp 791–796Google Scholar
- 3.Cui S, Goldsmith A, Bahai A (2003) Modulation optimization under energy constraints. Proceedings of IEEE international conference on comm, pp 2805–2811Google Scholar
- 4.Proakis J (2000) Digital Communications, 4th edn. McGraw Hill, New YorkGoogle Scholar