Patent ID: 9584198
Date: 2017-02-28
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for reciprocity calibration of a multiple-input multiple-output (MIMO) system, the method comprising: receiving, by a base station, a first set of pilot symbols by receivers (RXes) of the base station based on a pilot symbol transmitted from a transmitter (TX) of at least one reference antenna, wherein each of the first set of pilot symbols is received as an r transmitting, by the base station, the received first set of pilot symbols by TXes of the base station, wherein the transmitted received first set of pilot symbols are received by an RX of the at least one reference antenna as a second set of r calculating non-reciprocity compensation factors based on the first set of pilot symbols and the second set of pilot symbols as and applying the non-reciprocity compensation factors to payload data.