Paper Info
Title
Block lower multi-diagonalization for multiuser MIMO downlink
Abstract
For multiuser-MIMO (MU-MIMO) downlink, the authors propose a novel precoding concept of block lower multi-diagonalization. Extending the conventional block diagonalization method, the proposed precoder for the desired user is computed to incorporate a predetermined number of interfering users. Consequently, the concept enables us to ensure extra degrees of freedom at the transmit array even after null steering in a linear MU-MIMO strategy, and also to reduce computational load at transmit precanceling in a nonlinear MU-MIMO strategy. From an implementational viewpoint, we here examine two approaches: block bi-diagonalization, allowing one interfering user, and block lower tri-diagonalization, allowing up to two interfering users. In the paper, prior to a study on practical management schemes for residual interference, we reveal the significant potential of the proposed concept through the discussion and numerical evaluation using sum-rate capacity.
Year
DOI
Venue
2016
10.1109/WCNC.2016.7564687
2016 IEEE Wireless Communications and Networking Conference
Keywords
DocType
ISSN
sum-rate capacity,block lower tri-diagonalization,block bi-diagonalization,precoding,MU-MIMO downlink,multiuser MIMO downlink,block lower multi-diagonalization
Conference
1525-3511
ISBN
Citations 
PageRank 
978-1-4673-9815-2
2
0.38
References 
Authors
15
5
Name
Order
Citations
PageRank
Hiroshi Nishimoto1238.05
Hiroki Iura2334.87
Akinori Taira3174.47
Akihiro Okazaki43912.03
Atsushi Okamura5558.06