Dynamic Radio Map Construction for WLAN Indoor Location
A novel indoor location algorithm based on dynamic Radio Maps construction in wireless local area network (WLAN) is proposed. The limitation of previous static Radio Map method is that reconstruction work must be taken to adapt the variation of indoor wireless environment. By taking received signal strength (RSS) values varying over time and space into account, a dynamic Radio Map is constructed to avoid this work and thus the cost for location system is reduced significantly. During offline phase, the relationship between RSS of calibration points and reference points is established by artificial neural network (ANN), and then during online phase, the real-time RSS values at reference points are predicted based on the RSS collected at calibration points in real time. Through the simulation of K nearest neighbor (KNN) indoor location method for location accuracy, the feasibility and effectiveness of dynamic Radio Map construction based indoor location method is verified.
indoor location RSS WLAN dynamic Radio Maps calibration points
Huimin Wang Lin Ma Yubin Xu Zhian Deng
Communication Research Center, Harbin Institute of Technology Harbin, China
国际会议
杭州
英文
397-400
2011-08-26（万方平台首次上网日期，不代表论文的发表时间）