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AssigneeSharp Kabushiki Kaisha
InventorsRyota Yamada, Kazunari Yokomakura, Takashi Yoshimoto, Kozue Yokomakura, Katsuya Kato
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A reference signal generation unit 105 generates a reference signal and inputs it to resource-mapping units 106-1 to 106-T. There may be a plurality of types of reference signals depending on purposes. In the present disclosure, only a user-specific demodulation reference signal (DM-RS) is described. The resource-mapping units 106-1 to 106-T map DM-RS's and an input from the precoding unit 104 to a resource such that they are orthogonal between transmitting antennas and between transmission points.
1-10. (canceled)
A reception apparatus that communicates with a transmission point, configured to receive a first reference signal that is a user-specific reference signal transmitted by the transmission point that the reception apparatus commutates with, determine a first channel estimation value between the transmission point and the reception apparatus by using the first reference signal, and transmit the channel estimation value to the transmission point that the reception apparatus commutates with.
Dependencies are inferred from the claim text.