Patent ID: 11963111
Assignee: NOKIA SOLUTIONS AND NETWORKS OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The apparatus of claim 1, wherein the set of power allocation weights is an M dimensional vector w=(w1, . . . , wM)T∈+M×1, where M is the number of access point antennas of one or more access points, the downlink received channel estimates between the M access point antennas and a number of K user equipment antennas of one or more user equipments is represented with G∈M×K and the instructions, when executed with the at least one processor, cause the apparatus to perform iteratively updating the set of power allocation weights, w, with:
initializing the set of power allocation weights, w, to an initial set of power allocation weights, w0∈+M;
for the one or more iterations, 1≤n≤N, where N is a maximum number of iterations, updating the n-th set of power allocation weights with computing wn=Ω(wn−1), where:, Ω
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and
where the (n−1)-th set of power allocation weights is denoted wn−1=(w1[n−1], . . . , wM[n−1])T∈+M×1, wm[n−1]∈+ is the m-th weight of the (n-1)-th set of power allocation weights, wn−1, and the (n-1)-th extracted estimated power allocation for the m-th access point antenna is the square of ∥qm(wn−1)∥2, where qm(wn−1) is the mth row of a precoder matrix, Q(wn−1)∈M×K for 1≤m≤M, which is computed based on the downlink received channel estimates, G, and the (n-1)-th set of power allocation weights, wn−1.