Patent ID: 8908802

Claim:
A transmit diversity method, comprising: receiving, by a network node configured with N antennas, a configuration command, wherein N is an even number greater than or equal to 4; according to the configuration command, configuring antenna ports of M antennas as a first antenna port and configuring antenna ports of the remaining N-M antennas as a second antenna port, wherein M is a number equal to N divided by 2; multiplying an information symbol to be transmitted through the first antenna port by a first beamforming vector to obtain a first weighing matrix, wherein the first beamforming vector is an M-dimensional column vector; multiplying an information symbol to be transmitted through the second antenna port by a second beamforming vector to obtain a second weighing matrix, wherein the second beamforming vector is an M-dimensional column vector; transmitting, by each antenna mapping to the first antenna port, an element in the first weighing matrix to a user equipment (UE) on a predefined subcarrier of the antenna, wherein each antenna mapping to the first antenna port transmits an element from a fixed row in the first weighing matrix and the elements transmitted by different antennas are from different fixed rows in the first weighing matrix; and transmitting, by each antenna mapping to the second antenna port, an element in the second weighing matrix to the user equipment UE on a predefined subcarrier of the antenna, wherein each antenna mapping to the second antenna port transmits an element from a fixed row in the second weighing matrix and the elements transmitted on different antennas are from different fixed rows in the second weighing matrix.