| 摘要 |
<p>An objective of the present invention is, in a downlink MIMO transfer employing a plurality of transmission antennae, to make to conform simply, with a parameter change, a code book structure for pre-coding. Provided is a code book conformation method which makes a code book (13) conform for pre-coding which is applied to a downlink MIMO transfer, comprising: a step of sending a notification, from one communication device to another communication device, a code book size of a code book which is regulated by a plurality of parameters relating to gain information and phase information; and a step in which the other communication device makes a structure of the code book conform, on the basis of the code book size for which the notification is sent from the one communication device.</p> |
