摘要: A method and a network system capable of enhanced transmission data signals in multiple-input multiple-output (MIMO) communication using double-layer coordinated beamforming are disclosed. first layer precoding matrix is obtained from long-term channel state information between user equipment equipment, second the real-time equipment. The for determination includes predetermined signal-to-interference-plus-noise ratio (SINR), and/or power value associated with single antenna which used as optimization parameters. matrices combined beamforming. present disclosure allows to enhance prior art by adding some constraints during precoding.
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