An OFDM based local positioning system

Abstract

A sub cm precision local positioning system with a high update rate is proposed. This precision is possible because the high bandwidth that is available on 60 GHz. Using a OFDM based modulation scheme a very efficient ToA estimator can be made. Commercial CMOS technologies smaller than 40nm enable the use of mm-wave in a cost efficient manner. Two prototype ASICs have been made to implement the receiver which also includes a high speed analog to digital converter. The second ASIC implements the transmitter, it contains the modulator and power amplifier. To enable processing at the required update rates the algorithms for ToA estimation and localization are implemented on an FPGA.status: publishe