Relay and data relay method

摘要

Disclosed is a relay. The relay includes: a reception unit configured to receive signals from a transmitter; a processor configured to estimate a channel with respect to the transmitter based on a pilot signal of the transmitter among receiving signals, remove the pilot signal from among the received signals, amplify the signals without the pilot signal according to the estimated channel, and insert a pilot signal of the relay into the amplified signals; and a transmitter transmitting the signals including the pilot signal of the relay under the control of the processor.

主权项

1. A data relay method in a multi-input multi-output (MIMO) type two-way relay, the method comprising:
receiving signals SA and SB transmitted from a base station and a terminal; processing the received signals to relay them to the terminal and the base station; and relaying the processed received signals to the base station and the terminal, wherein when a forward channel from the terminal to the relay is G, a reverse channel from the terminal to the relay is G, a power adjustment constant of the relay is γ, and a filter of the relay is F, the signal processing step comprises filtering performed through the filter F such that a self-interference signal component γ GFGsA of the terminal generated as the signal SA is received again by the terminal through the reverse channel G of the terminal and the relay is removed.