CHANNEL ESTIMATION METHOD AND RECEIVER

摘要

To improve the accuracy of a channel estimated value when beam-forming is employed, provided is a channel estimation method including: determining a channel estimated value of a cell-specific reference signal from a cell-specific reference signal; determining a channel estimated value of a UE-specific reference signal from a UE-specific reference signal; calculating a cell-specific channel estimated value by using the channel estimated value of the cell-specific reference signal; estimating a beam-forming vector by using the channel estimated value of the cell-specific reference signal and the channel estimated value of the UE-specific reference signal; and calculating a UE-specific channel estimated value by multiplying the cell-specific channel estimated value by the beam-forming vector.

主权项

1. A channel estimation method, comprising:
transmitting, at a transmitting end, a signal obtained by inserting a cell-specific reference signal for supporting transmission of normal data that is not subjected to beam-forming and a UE-specific reference signal for supporting the beam-forming into transmission data, as a transmission signal; and receiving, at a receiving end, the transmission signal as a received signal and estimating a cell-specific channel estimated value and a UE-specific channel estimated value from the cell-specific reference signal and the UE-specific reference signal extracted from the received signal, wherein the channel estimation method include: determining, from the cell-specific reference signal, a channel estimated value of the cell-specific reference signal; determining, from the UE-specific reference signal, a channel estimated value of the UE-specific reference signal; calculating the cell-specific channel estimated value by using the channel estimated value of the cell-specific reference signal; estimating a beam-forming vector by using the channel estimated value of the cell-specific reference signal and the channel estimated value of the UE-specific reference signal; and calculating the UE-specific channel estimated value by multiplying the cell-specific channel estimated value by the beam-forming vector.