Ranging performance with 60 GHz signals in indoor residential environments

A 60 GHz ranging model is established and a strongest path search ranging algorithm based on beamforming is proposed. The range error caused by a non-line of sight (NLOS) channel is mitigated by modeling the corresponding delay bias. Outlier detection is employed to improve the accuracy. Performance results are presented which show that 60 GHz ranging can achieve centimeter level accuracy in indoor residential environments. The proposed range estimation algorithm results in an error of less than 5 cm 99% of the time in line of sight (LOS) channels, and an error of less than 10 cm 90% of the time in NLOS channels, over a distance of 5 m. This indicates that 60 GHz ranging is a practical and effective ranging solution.