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An efficient CDMA core for indoor acoustic position sensing

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNPaper

Publication date1/09/2010
Host publicationIndoor Positioning and Indoor Navigation (IPIN), 2010 International Conference on
PublisherIEEE Publishing
Number of pages5
ISBN (Electronic)978-1-4244-5865-3
ISBN (Print)978-1-4244-5862-2
Original languageEnglish


We present an efficient CDMA detection core suited for multiuser indoor acoustic positioning. An ultrasonic multi-code 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.