Patent ID: 8660601
Filing Date: 2014-02-25
Classification: H04B

Abstract:
1. A method of operating a serving base station for a multi-cell cooperative communication in cooperation with at least one neighboring base station, the method comprising: generating, using a computer, a precoding matrix based on a plurality of codeword matrices; providing, using a computer, the phase shift matrix to shift a phase of at least one element among elements included in the precoding matrix; and precoding, using a computer, at least one data symbol using the phase shift matrix and the precoding matrix, wherein the precoding matrix and the phase shift matrix are based on information from the terminal regarding a preferred precoding matrix and a preferred phase shift matrix adjusting a transmit power of the pre-coded at least one data symbol wherein the adjusting comprises adaptively adjusting the transmit power of the pre-coded at least one data symbol based on at least one of a channel between the at least one neighboring base station and a terminal, a channel between the serving base station and the terminal, and an achievable capacity of the terminal.