@article{(Open Science Index):https://publications.waset.org/pdf/12871,
	  title     = {Improvement over DV-Hop Localization Algorithm for Wireless Sensor Networks},
	  author    = {Shrawan Kumar and  D. K. Lobiyal},
	  country	= {},
	  institution	= {},
	  abstract     = {In this paper, we propose improved versions of DVHop
algorithm as QDV-Hop algorithm and UDV-Hop algorithm for
better localization without the need for additional range measurement
hardware. The proposed algorithm focuses on third step of DV-Hop,
first error terms from estimated distances between unknown node and
anchor nodes is separated and then minimized. In the QDV-Hop
algorithm, quadratic programming is used to minimize the error to
obtain better localization. However, quadratic programming requires
a special optimization tool box that increases computational
complexity. On the other hand, UDV-Hop algorithm achieves
localization accuracy similar to that of QDV-Hop by solving
unconstrained optimization problem that results in solving a system
of linear equations without much increase in computational
complexity. Simulation results show that the performance of our
proposed schemes (QDV-Hop and UDV-Hop) is superior to DV-Hop
and DV-Hop based algorithms in all considered scenarios.},
	    journal   = {International Journal of Electronics and Communication Engineering},
	  volume    = {7},
	  number    = {4},
	  year      = {2013},
	  pages     = {390 - 400},
	  ee        = {https://publications.waset.org/pdf/12871},
	  url   	= {https://publications.waset.org/vol/76},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 76, 2013},
	}