Currrent Issue: Volume 3, Number 1, 2015


Article

A Novel Energy-efficient Cooperative Transmission Scheme Based on V-BLAST Processing and ICA clustering for WSNs Lifetime Maximization

1Department of electrical and computer engineering, Birjand University, Birjand, Iran


American Journal of Sensor Technology. 2015, 3(1), 5-12
doi: 10.12691/ajst-3-1-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Mohammad Sadeghian Kerdabadi, Reza Ghazizadeh. A Novel Energy-efficient Cooperative Transmission Scheme Based on V-BLAST Processing and ICA clustering for WSNs Lifetime Maximization. American Journal of Sensor Technology. 2015; 3(1):5-12. doi: 10.12691/ajst-3-1-2.

Correspondence to: Mohammad  Sadeghian Kerdabadi, Department of electrical and computer engineering, Birjand University, Birjand, Iran. Email: mohammad.sadeghian@birjand.ac.ir

Abstract

In wireless sensor network, one of the main objectives is how to improve its lifetime because the sensor nodes are generally energy-limited. Thus, providing ways to optimize energy Consumption, which ultimately increases the network lifetime, is of great importance. In this paper, we propose and evaluate an energy-efficient cooperative MIMO transmission scheme based on V-BLAST technique. In proposed scheme the clustering is done based on Imperialist Competitive Algorithm (ICA) then V-BLAST technique based virtual MIMO transmission are used. This proposed protocol performance is analytically and experimentally is compared with previous presented works. From the analysis and the simulation results, it is seen that the proposed method can reduce the energy consumption of the network and prolong the sensor networks lifetime compared with existing techniques.

Keywords

References

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Article

Effect of Poly Ethylene Glycol on Moisture Sensing of Copper Ferrite Nanocomposite

1Department of Physics, University of Lucknow, Lucknow, India


American Journal of Sensor Technology. 2015, 3(1), 1-4
doi: 10.12691/ajst-3-1-1
Copyright © 2015 Science and Education Publishing

Cite this paper:
Richa Srivastava. Effect of Poly Ethylene Glycol on Moisture Sensing of Copper Ferrite Nanocomposite. American Journal of Sensor Technology. 2015; 3(1):1-4. doi: 10.12691/ajst-3-1-1.

Correspondence to: Richa  Srivastava, Department of Physics, University of Lucknow, Lucknow, India. Email: richadolly@rediffmail.com

Abstract

Present paper reports, synthesis of CuFe2O4 nanocomposite via chemical precipitation route and effect of poly ethylene glycol on their humidity sensing properties. The variations of resistance with and without PEG at different value of %RH of the sensing elements were investigated. The maximum average value of sensitivity was found 13.7 MΩ/%RH respectively over the entire range of relative humidity. Results are found to be reproducible after three months with ±5 % hysteresis. Sensing material synthesized through PEG has been characterized by X-ray diffraction (XRD) and Scanning electron microscopy (SEM). XRD pattern revealed cubic crystal system. The average crystallite size of material was found to be 85.7 nm. SEM images show porous nature of sensing material with a number of active sites throughout the surface. The average size of pores of material was found to be 2µm.

Keywords

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