Patent ID: 8768272

Claim:
A method for producing a transmitter beamforming vector under per-antenna power constraints and an effective isotropic radiated power (EIRP) constraint for N antennas, the method comprising: assigning full antenna power to each antenna in a group of M antennas, wherein M<N and M is a maximal integer number of antennas for which the EIRP constraint is fulfilled when the group of said M antennas is transmitting in its maximum allowed power, and wherein the M antennas in the group have higher channel magnitudes than the antennas not included in the group, the channel magnitudes being the absolute values of components of a channel vector {tilde over (h)}; and assigning zero power to N−(M+1) antennas having the lowest channel magnitudes, said N−(M+1) antennas not being included in the group of M antennas.