| 摘要 |
Embodiments of the present invention relate to the communications field, and provide a beamforming based communications method and apparatus, where a three-level structure is used to control a beam direction and a beam width while reducing use of hardware. The solution includes: obtaining, by a transmit end, a transmit-end precoding matrix Tr BB , a transmit-end intermediate-frequency beamforming matrix Tr IF , and a transmit-end radio-frequency-end beamforming matrix Tr RF according to feedback information that is from a receive end; acquiring a first data stream, and performing precoding processing on the first data stream according to Tr BB , to generate a first analog signal; performing weighting and power amplification processing on the first analog signal according to Tr IF , to generate a second analog signal; performing weighting and power amplification processing on the second analog signal according to Tr RF , to generate a third analog signal; and determining an antenna array matching the third analog signal, and transmitting the third analog signal to the receive end by using the antenna array matching the third analog signal. |
