Research on an Advanced Cooperative Censored Positioning Algorithm in Wireless Sensor Networks
In cooperative positioning, the additional information from agent-to-agent links helps more agents complete their position estimates, but at the same time, leads to increased network traffic and even degraded positioning accuracy. Transmit and receive censoring can significantly reduce complexity and network traffic without hampering the positioning performance. In this paper, an advanced combined censored positioning algorithm is proposed to further reduce the use of invalid information links. Specifically, a method in the algorithm with variable step size has a positive impact on accuracy. The simulation results manifest that the proposed algorithm is efficient to reduce computational complexity and improve positioning performance.
KeywordCooperative positioning Cramer-Rao bound Transmit censoring Receive censoring Variable step size
- 4.Z. Situ, I.W.H. Ho, H.C.B. Chan et al., The impact of node reliability on indoor cooperative positioning, in 2016 IEEE International Conference on Digital Signal Processing (DSP) (IEEE, 2016), pp. 300–304Google Scholar
- 13.K. Das, H. Wymeersch, Censored cooperative positioning for dense wireless networks, in 2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops (PIMRC Workshops) (IEEE, 2010), pp. 262–266Google Scholar
- 14.J. Xu, M. Ma, C.L. Law, AOA cooperative position localization, in IEEE Global Telecommunications Conference (New Orleans, USA, 2008), pp. 1–5Google Scholar