Communication apparatus and precoding method based on multiple cells and multiple users

摘要

Provided are a communication apparatus that may generate a precoding matrix including precoding vectors to cancel or align interference existing in a plurality of terminal devices based on location of the terminal devices, and a terminal device that may estimate a channel formed between the terminal device and the communication apparatus to cancel or align interference signals.

主权项

1. A precoding method, comprising:
aligning, in the same space, different interference channels corresponding to different terminal devices included in a cell edge region of an interference base station; and generating a reception beamforming vector of one or more terminal devices included in a cell edge region of a serving base station, based on the aligned interference channels of the interference base station, wherein the interference channels comprise a first interference channel of a first terminal and a second interference channel of a second terminal, and wherein the aligning in the same space comprises calculating a rank of the first interference channel and the second interference channel to have a value of 1 or a proximate value of 1.