Localization for Indoor Navigation
To localise wireless device in indoor setting, we can utilise CSI data from access points which we can get using SLAM techniques. Each accesspoint has inconsistant offset and need to be dealt with.
Transformation:
convert SxA Matrix to a heatmap using 2D-FFT
Encoder
The encoder, E : H → ˆH , takes in the input heatmaps, H , corresponding to all the APs in the environment and generates a concise representation
2 Step Approach:
Step 1:
Location
The location decoder, Dlocat ion : ˆH → Ylocation takes in the encoder representation, ˆH and outputs an estimate for the location, Ylocation.
Step 2:
Consitency
The consistency decoder, Dconsistency : ˆH → Yconsistency ensures that the network sees a consistent view of the environment across different training samples as well as across different access points. Where Yconsistency are output heatmaps, Y i consistency corresponding to all the APs (say NAP ).
