主权项 |
1. A channel feedback information transmission method, wherein the method comprises:
performing, by a terminal, channel estimation on a subcarrier on which a downlink pilot is located, and obtaining first channel information; performing, by the terminal, a channel interpolation calculation on a channel of a data subcarrier according to the first channel information, and obtaining second channel information according to a result of the channel interpolation calculation; determining, by the terminal, a feedback factor; obtaining, by the terminal, third channel information from the second channel information according to the feedback factor, wherein an amount of the third channel information is less than an amount of the second channel information; and feeding back, by the terminal, the third channel information to a base station. |