Position and Orientation Error Bound for Wideband Massive Antenna Arrays

Next generation cellular networks will experience the combination of femtocells, millimeter-wave (mmW) communications and massive antenna arrays. In addition to benefits in terms of an increased communication capacity, this mix of technologies can be fruitfully exploited to enable high-accuracy indoor positioning. In fact, thanks to the high beamforming capability of massive arrays, mobile terminal localization can be performed in principle by using only one single access point (AP), thus avoiding costly infrastructures with additional APs dedicated to positioning. In this context, our paper aims at investigating the localization and orientation performance limits of networks employing wideband massive arrays both at receiving and transmitting devices. In particular, the effects of the array structure, bandwidth and synchronization error are studied both at mmW and at 10GHz, when phased, timed and random arrays are employed.