@inproceedings{
 title = {Capacity of opportunistic space division multiple access with beam selection},
 type = {inproceedings},
 year = {2006},
 identifiers = {[object Object]},
 id = {6c754625-c585-3d11-a977-b09c23d336ed},
 created = {2016-09-06T19:47:38.000Z},
 file_attached = {false},
 profile_id = {be62f108-1255-3a2e-9f9e-f751a39b8a03},
 last_modified = {2017-03-24T19:20:02.182Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {false},
 hidden = {false},
 private_publication = {false},
 abstract = {In this paper, a novel transmission technique for the multiple-input multiple-output (MIMO) broadcast channel is proposed that allows simultaneous transmission to multiple users under a limited feedback requirement. During a training phase, the base station modulates a training sequence on multiple sets of randomly generated orthogonal beamforming vectors. Then, based on the users' feedback, the base station opportunistically selects the users and corresponding orthogonal vectors that maximize the sum capacity. From theoretical analysis, the optimal amount of training to maximize the sum capacity is derived as a function of the system parameters. The main advantage of the proposed system is that it provides throughput gains for the MIMO broadcast channel with a small feedback overhead, and provides these gains even with a small number of active users. Numerical simulations show that a 20% gain in sum capacity is achieved (for a small number of users) over conventional opportunistic space division multiple access, and a 100% gain (for a large number of users) over conventional opportunistic beamforming. ? 2006 IEEE.},
 bibtype = {inproceedings},
 author = {Choi, W. and Forenza, A. and Andrews, J.G. and Heath Jr., R.W.},
 booktitle = {GLOBECOM - IEEE Global Telecommunications Conference}
}

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