Patent ID: 7949360

Claim:
An apparatus for adaptively allocating transmission power for beam-forming combined with orthogonal space time block codes in a distributed wireless communication system, the apparatus comprising: a plurality of sub-arrays for beam-forming, which are geographically distributed and each of which comprises a respectively plurality of distributed antennas arranged in random groups; and a central processing unit for applying predetermined combinable power allocation schemes according to subsets in a plurality of the sub-arrays, for identifying performances of the schemes by using information on large-scale fading of cach of the sub-arrays fed back from a receiving party, for setting a subset comprising a best performance as an optimal subset according to the identified performances, and performing power allocation according thereto; wherein the subsets are a random combination of the sub-arrays, and wherein the predetermined power allocation scheme allocates the transmission power proportional to a Nakagagami fading parameter “m” for each of the sub-arrays.