Double-stream beamforming method and device

摘要

Disclosed are a double-stream beamforming method and device, which relate to communication technology. The method comprises: first, according to a DOA angle, determining an array response vector; then according to the array response vector, in accordance with the number of each group of transmission antennae of a base station, distributing parameters to generate two groups of coefficients, and according to the two groups of coefficients, conducting beamforming on the antennae. There is no need to conduct characteristic value decomposition to obtain a characteristic vector, thereby reducing the double-stream beamforming complexity.

主权项

1. A method of dual-stream beamforming, comprising:
determining Direction Of Arrival (DOA) angles of antennas; determining array response vectors from the DOA angles; generating two sets of coefficients from the array response vectors by allocating parameters according to the numbers of respective sets of transmit antennas of a base station; and performing beamforming respectively for two sets of antennas by the two sets of coefficients; wherein the determining the DOA angles of the antennas comprises:
performing uplink channel estimation using an uplink pilot of a full bandwidth or a preset sub-band to determine a channel matrix;determining a channel related matrix from the channel matrix; anddetermining the DOA angles of the antennas from the channel related matrix.