Abstract-We present an efficient CDMA detection core suited for multiuser indoor acoustic positioning. An ultrasonic multicode despreader is proposed, allowing simultaneous broadband acoustic ranging signals to be processed in real time by embedded sensors. The ranging performance is characterised using a dataset gathered from a real deployment of ultrasonic devices and is shown to be favourable. The proposed core can be used as a basis for more sophisticated receivers, such as those capable of detecting heavily Doppler-shifted signals.
REF proposes an ultrasonic multicode despreader allowing simultaneous acoustic ranging in real time by embedded sensors.
An efficient CDMA core for indoor acoustic position sensing
2010 International Conference on Indoor Positioning and Indoor Navigation
2010 International Conference on Indoor Positioning and Indoor Navigation
Engineering