METHOD AND APPARATUS FOR IMPLEMENTING INTERFERENCE ALIGNMENT ON THE BASIS OF CODEBOOK DESIGN AND SELECTION

摘要

Disclosed are a method and apparatus for implementing interference alignment on the basis of codebook design and selection. The method comprises: pre-design or pre-store a codebook set of precoding matrixes, the codebook set comprising codebooks of different sizes; a receive end or a transmit end selects a codebook satisfying a specified condition from the codebook set to serve as a current codebook and explicitly or implicitly notifies the peer end; the receive end designs, on the basis of obtained ideal channel state information and an interference alignment condition, a precoding matrix V and a receive matrix U used for implementing interference alignment; the receive end selects a matrix V' having the highest similarity to the precoding matrix V from the current codebook to serve as a precoding matrix V' for final quantization; the receive end again calculates the receive matrix U to obtain a receive matrix U' on the basis of the quantized precoding matrix V' and according to the interference alignment condition; and the transmit end transmits a signal according to feedback information and the quantized precoding matrix V', and the receive end performs filtering processing on the signal according to the receive matrix U' so as to implement interference alignment.