TY - JOUR
T1 - On Regularization Parameter for Block Diagonalization with Limited Feedback
AU - Min, Moonsik
N1 - Publisher Copyright:
© 2021, Korean Institute of Communications and Information Sciences. All rights reserved.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - In downlink multiple antenna systems, the performance of block diagonalization is improved by using an appropriate regularization parameter. The optimal value of the parameter can be obtained by an explicit form if the transmitter has a perfect channel state information. However, with limited feedback, the regularization parameter should be shifted reflecting the effect of the multiuser interference. This study investigates the behavior of the regularization parameter with limited feedback, when the number of receive antennas is greater than one.
AB - In downlink multiple antenna systems, the performance of block diagonalization is improved by using an appropriate regularization parameter. The optimal value of the parameter can be obtained by an explicit form if the transmitter has a perfect channel state information. However, with limited feedback, the regularization parameter should be shifted reflecting the effect of the multiuser interference. This study investigates the behavior of the regularization parameter with limited feedback, when the number of receive antennas is greater than one.
KW - block diagonalization
KW - limited feedback
KW - MIMO
KW - multiuser interference
KW - regularization parameter
UR - http://www.scopus.com/inward/record.url?scp=85189327484&partnerID=8YFLogxK
U2 - 10.7840/kics.2021.46.7.1156
DO - 10.7840/kics.2021.46.7.1156
M3 - Article
AN - SCOPUS:85189327484
SN - 1226-4717
VL - 46
SP - 1156
EP - 1159
JO - Journal of Korean Institute of Communications and Information Sciences
JF - Journal of Korean Institute of Communications and Information Sciences
IS - 7
ER -