Method and apparatus for allocating power in a MU-MIMO communication system

An apparatus of a base station in a multi-user multiple-input multiple-output (MU-MIMO) communication system, comprising:

• a power calculating logic on at least one processor to calculate a power for each user of a plurality of users communicating with the base station in the MU-MIMO system, based upon an average power and a power increment, wherein the power calculating logic further comprises an average power logic to calculate the average power among the plurality of users based upon a total power for the base station to communicate with the plurality of users, and a power increment logic to determine the power increment for the each user based upon at least one of a fairness algorithm and a throughput algorithm, wherein if the power increment is determined based upon the throughput algorithm, the power increment logic is further to determine the power increment based upon the following equation:
• MaxSum_C
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• wherein, MaxSum_C represents a maximum of a throughput sum C, i represents an ith user, N represents a number of the plurality of users, P represents the total power, Ii represents an interference for the ith user, σi represents a white noise for the ith user, ƒi( ) represents a throughput function, and ΔPi represents the power increment for the ith user, and wherein different users of the plurality of users having different long-term signal to interference plus noise ratios (SINRs) are calcuated with different powers;
• and
• a power allocating logic on at least one processor to allocate the power to the each user.