Patent ID: 9287620
Filing Date: 2016-03-15
CPC Classification: H01Q,H04B

Claim Text:
1. A method for determining an impairment compensation matrix for compensation of impairments in an antenna array comprising N antenna subarrays, comprising: determining a plurality of different combinations of multi-signal transmissions which form at least one null at a respective location of a plurality of locations, each different combination comprising: a multi-signal transmission that comprises at least two concurrent signal transmissions from at least two antenna subarrays of the N antenna subarrays, the at least two concurrent signal transmissions having associated signal characteristics; and the respective location; based on the signal characteristics associated with the plurality of different combinations of multi-signal transmissions and an expected signal reception at the plurality of locations, determining an impairment matrix that identifies an effect of impairments among the N antenna subarrays; and determining the impairment compensation matrix based on the impairment matrix.