COMPENSATION TECHNIQUES FOR GROUP DELAY EFFECTS IN TRANSMIT BEAMFORMING

摘要

In a beamforming system and method, a technique to remove the group delay effects described above by processing the transmit weights to compensate for any group delay caused by receive synchronization in the receive device. At a first communication device on the link, transmit weights are computed from signals transmitted by a second communication device and received at a plurality of antennas of the first communication device. The transmit weights are processed to compensate for group delay that may be introduced by receive synchronization performed by the first communication device. The transmit weights are then applied to a transmit signal to produce a plurality of transmit signals to be simultaneously transmitted from corresponding ones of the plurality of antennas of the first communication device to the second communication device.