摘要

To obtain accurate position estimation in wireless sensor networks (WSN), a new method-CMA-MAP, based on constant modulus algorithm (CMA), and an enhanced algorithm CMA-MDS are presented. Taking advantage of the property of constant modulus of the distance between communication nodes, CMA-MAP first finds out a number of local optimum solutions to satisfy the net topology. Then, the global optimum solution is obtained by comparing above local optimum solutions. CMA-MDS is a combination of CMA and multidimensional scaling (MDS) technique. Simulation results show that CMA-MDS can improve the precision of estimation with great robustness.

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