User terminal and wireless communication method
AssigneeNtt Docomo, Inc.
InventorsKeisuke Saito, Kazuki Takeda, Satoshi Nagata
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Abstract
A user terminal according to the present invention calculates a channel estimation value for each subcarrier by using a demodulation RS, calculates the time fluctuation amount of each symbol by using a correction RS mapped on a symbol following a symbol on which the modulation RS is mapped, corrects the channel estimation value for the subcarrier of a resource element on which a data signal to be demodulated is mapped, by using the time fluctuation amount of the symbol of the resource element, and calculates the channel estimation value of the resource element.
Claims12
A user terminal, comprising:
- a receiver that receives a downlink signal including a data signal, a demodulation reference signal, and a correction reference signal;
- a channel estimator that calculates a channel estimation value of each subcarrier, using the demodulation reference signal;
- a channel corrector that calculates a temporal fluctuation amount of each symbol, using the correction reference signal;
- and
- a demodulator that demodulates the data signal, using the channel estimation value and the temporal fluctuation amount.
A radio communication method for a user terminal, the method comprising:
- receiving a downlink signal including a data signal, a demodulation reference signal, and a correction reference signal;
- calculating a channel estimation value of each subcarrier, using the demodulation reference signal;
- calculating a temporal fluctuation amount of each symbol, using the correction reference signal;
- and
- demodulating the data signal using the channel estimation value and the temporal fluctuation amount.
Dependencies are inferred from the claim text.