Kentaro Tada   Satoru Aikawa   Shinichiro Yamamoto   
2020 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) 239-240 2021年
Currently, research is being conducted on location estimation using wireless LAN access points. In this research, we apply a particle filter, which is one of the time series filters, to examine the design method of its parameters and evaluate its ...
2020 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) 853-854 2021年
We are investigating the finger print method using wireless LAN access points (APs) to estimate user location. We focused on the APs coincidence rate (APCR) and database update as a way to prevent the loss of estimation accuracy. The APCR is a met...
IEEJ Transactions on Fundamentals and Materials 140(8) 423-424 2020年8月
Recently, EM wave absorbers are frequently applied to prevent undesired EM waves. In our previous works, EM wave absorbers consisting of a artificially designed material and a ferrite rubber mixture have been proposed. As the newly materials, the ...
With the recent expansion of electromagnetic (EM) waves, undesired EM waves generated by device can cause malfunctions of other electronic equipment and communication failure. EM wave absorbers are widely used as countermeasures against these prob...
This contribution focuses on the accuracy and measurement cost of indoor Area Estimation using wireless LAN. The system estimates the area, such as a room or a shopping store, where the user is located. The user-measured AP information (UD), and t...