Patent ID: 8285221
Filing Date: 2012-10-09
Classification: H01Q,H04B,H04W

Abstract:
1. A method for configuring a wireless base station having a configurable antenna calibration facility, the method comprising: in a radio frequency (RF) head of the wireless base station, automatically selecting a calibration configuration for performing antenna calibration from among: (a) a first configuration for magnitude and phase calibration of adaptive antennas; and (b) a second configuration for magnitude and phase calibration of antennas utilized with coherent combining of independent transmitter outputs; generating calibration coefficients via the calibration configuration selected; when the second configuration is selected, providing effective phase calibration for coherent combining of individual transmitter output signals with a passive combiner mechanism, wherein the passive combiner mechanism is coupled to the RF head; controlling an amplitude of a transmitter signal within the RF head via an individual power control mechanism; and when the first configuration is selected, enabling null-steering and beam shaping via the adaptive antennas, wherein the null-steering and beam shaping enables transmission of output signals in a direction of a receiving device, enabling null-steering and beam shaping of adaptive antennas utilized with coherent combining by using corresponding calibration coefficients when the second configuration is selected.