Methods, Systems, And Computer Program Products For Calibrating Phase Hardware-Induced Distortion In A Cellular Communications System

摘要

Methods and systems are described for calibrating phase hardware-induced distortion in a cellular communications system. In one aspect, an estimate of a phase difference at a user equipment (UE) between downlink channels including signals sent over two or more BS transmitter chains is obtained. A phase difference between uplink channels including signals received over two or more BS receiver chains is determined. A relative phase distortion induced by two or more BS transceiver chains is determined based on the received estimate of phase difference between downlink channels and the determined phase difference between uplink channels.

主权项

1. A method for calibrating phase hardware-induced distortion in a cellular communications system, the method comprising:
obtaining an estimate of a phase difference between estimated downlink channels obtained at a user equipment (UE) from signals sent over two or more base station (BS) transmitter chains; determining a phase difference between estimated uplink channels obtained from signals received over two or more BS receiver chains; and determining, based on the estimate of phase difference between estimated downlink channels and the determined phase difference between estimated uplink channels, a relative phase distortion induced by two or more BS transceiver chains including the two or more BS transmitter chains and the two or more BS receiver chains; wherein at least one of the preceding actions is performed on at least one electronic hardware component.