Transmitter apparatus, receiver apparatus, communication system, communication method, and integrated circuit

摘要

A transmitter apparatus to transmit to a plurality of receiver apparatuses a data signal at the same timing and on the same frequency, includes a transmitter unit that transmits a demodulation reference signal addressed to a first receiver apparatus and a demodulation reference signal addressed to a second receiver apparatus different from the first receiver apparatus at the same timing and on the same frequency.

主权项

1. A receiver apparatus comprising:
a perturbation vector adder that adds a perturbation vector candidate that is an integer multiple of a predetermined width to a demodulation reference signal; and an interim channel estimator that estimates a channel in accordance with the demodulation reference signal with the perturbation vector candidate added thereto.