A codebook designing method which is based on singular value decomposition (SVD) and for non-linear precoding in a multi-user, multi-input, and multi-output (MU-MIMO) system with limited feedback. According to the present invention, the SVD-based codebook designing method includes the steps of: indirectly quantizing channels based on SVD standards to design a non-linear codebook and using the designed non-linear codebook to generate codebook design standards regarding singular matrices and singular values in accordance with the singular matrices; and deriving a closed form expression for achievable thumb-rates by using the generated codebook design standards.;COPYRIGHT KIPO 2016
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