Patent ID: 8761098
Filing Date: 2014-06-24
Classification: H04B

Abstract:
1. A method for transmitting, by a base station (BS), pilot signals in a downlink multiple input multiple output (MIMO) system the method comprising: mapping, by the BS which includes ‘N’ transmit antennas 0 to N−1 for transmission of cell-specific pilot symbols R broadcasting, by the BS, RB information indicating a position of the RB to which the user-specific pilot symbols R transmitting the cell-specific pilot symbols R wherein the downlink subframe includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time axis and a plurality of RBs in a frequency axis, wherein the user-specific pilot symbols R wherein the cell-specific pilot symbols R wherein the user-specific pilot symbols R wherein the RB information is broadcast to allow the first UE, as well as the second UE, to use the user-specific pilot symbols R