TY - GEN
T1 - Performance analysis of multiuser MIMO systems with zero forcing receivers
AU - Chang, Kyung Sung
AU - Sung, Hyun Moon
AU - Jinwoo, Choe
AU - Inkyu, Lee
PY - 2007
Y1 - 2007
N2 - In this paper, we consider multiuser multi-input/multi-output antenna systems with zero-forcing receivers in downlink. In this case, to exploit multiuser diversity, spatial-division multiple access (SDMA) system allows to assign different users to a part of transmit antennas at the base station whereas spatial-division multiplexing (SDM) system assigns all antennas to single user's data stream. In this paper, we present analytical frameworks to evaluate performance of these systems. We first analyze the performance of these two systems by deriving closed-form expressions of achievable throughput. Numerical results show that the derived expressions are very tight. In addition, we approximate the capacity expression of SDM and SDMA systems and compare the SDM with the optimal case.
AB - In this paper, we consider multiuser multi-input/multi-output antenna systems with zero-forcing receivers in downlink. In this case, to exploit multiuser diversity, spatial-division multiple access (SDMA) system allows to assign different users to a part of transmit antennas at the base station whereas spatial-division multiplexing (SDM) system assigns all antennas to single user's data stream. In this paper, we present analytical frameworks to evaluate performance of these systems. We first analyze the performance of these two systems by deriving closed-form expressions of achievable throughput. Numerical results show that the derived expressions are very tight. In addition, we approximate the capacity expression of SDM and SDMA systems and compare the SDM with the optimal case.
UR - http://www.scopus.com/inward/record.url?scp=34547292445&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2007.441
DO - 10.1109/VETECS.2007.441
M3 - Conference contribution
AN - SCOPUS:34547292445
SN - 1424402662
SN - 9781424402663
T3 - IEEE Vehicular Technology Conference
SP - 2135
EP - 2139
BT - 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
T2 - 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Y2 - 22 April 2007 through 25 April 2007
ER -