| 摘要 |
Embodiments of the present invention disclose a precoding method and apparatus in a multiple input multiple output system, and pertain to the communication field.The method includes: receiving a non-constant modulus channel information matrix fed back by a UE; processing the non-constant modulus channel information matrix and removing amplitude information, and obtaining a precoding matrix according to a constant modulus channel information matrix; and precoding data to be sent by using the precoding matrix. The apparatus includes: a receiving module, a processing module, and a precoding module. According to the technical solutions provided in the embodiments of the present invention, the non-constant modulus channel information matrix fed back by the UE is processed and the amplitude information in the channel information matrix is removed; the precoding matrix is obtained according to the constant modulus channel information matrix; and after the data to be sent is precoded by using the precoding matrix, transmit antennas are enabled to concurrently send the data to be sent at the maximum transmit power, which reduces a power loss. |
