10. A device for configuring codebooks comprising a first selecting module and a first transmitting and receiving module, wherein the first selecting module is configured to select a code word restricted sub-set and inform the first transmitting and receiving module of the code word restricted sub-set by sending a restricted sub-set bitmap to the first transmitting and receiving module, the code word restricted sub-set containing part or all of code words in a first codebook and/or a second codebook; and the first transmitting and receiving module is configured to inform a receiving end of the selected code word restricted sub-set by sending to the receiving end a signaling carrying the restricted sub-set bitmap; wherein each information bit in the restricted sub-set bitmap is associated with a code word for indicating whether the associated code word belongs to the code word restricted sub-set; wherein the first selecting module is configured to configure the restricted sub-set bitmap in one of the following ways: (1) performing sub-set restriction on the code words in the first codebook and the second codebook jointly, wherein a code word in the first codebook and a code word in the second codebook are taken as a code word combination, each code word combination is associated with one information bit in the restricted sub-set bitmap, and the code word restricted sub-set contains code words extracted from the first codebook and code words extracted from the second codebook; (2) performing sub-set restriction only on the code words in the first codebook, wherein each code word in the first codebook is associated with one information bit in the restricted sub-set bitmap, and the code word restricted sub-set contains code words extracted from the first codebook and all code words in the second codebook; (3) performing sub-set restriction only on the code words in the second codebook, wherein each code word in the second codebook is associated with one information bit in the restricted sub-set bitmap, and the code word restricted sub-set contains code words extracted from the second codebook and all code words in the first codebook; and (4) performing sub-set restriction on the code words in the first codebook and the second codebook separately, wherein each code word in the first codebook and the second codebook is associated with one information bit in the restricted sub-set bitmap, and the code word restricted sub-set contains code words extracted from the first codebook and code words extracted from the second codebook.
13. The device according to claim 10 , wherein the first selecting module is further configured such that the transmitting end selects the same code word restricted sub-set, or selects different code word restricted sub-sets separately according to a manner of periodic feedback and non-periodic feedback used by the receiving end.