Title :
CQI mismatch analysis for multiuser orthogonal random beamforming systems
Author :
Kim, Chanhong ; Jung, Sungkyu ; Ko, Kyeongjun ; Lee, Jungwoo
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul, South Korea
Abstract :
In this paper, we analyze channel quality indicator (CQI) mismatch probabilities of multiuser orthogonal random beamforming (ORBF) systems. First, we derive the CQI mismatch probability of the ORBF system with M transmit antennas and K users equipped with one receive antenna. Using that result, we also derive the upper and lower bounds of the per user unitary and rate control (PU2RC) system with 2 transmit antennas and K users equipped with one receive antenna, which is being adopted in the IEEE 802.16m standard. Finally, we compare theoretical results with numerical results from simulation.
Keywords :
MIMO communication; WiMax; receiving antennas; transmitting antennas; CQI mismatch analysis; IEEE 802.16 standard; M transmit antennas; ORBF system; PU2RC; channel quality indicator; multiple-input multiple-output; multiuser orthogonal random beamforming systems; per user unitary and rate control system; receive antenna; Array signal processing; Indexes; Interference; MIMO; Receiving antennas; Signal to noise ratio; Transmitting antennas;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2010 IEEE 21st International Symposium on
Conference_Location :
Instanbul
Print_ISBN :
978-1-4244-8017-3
DOI :
10.1109/PIMRC.2010.5671844
