DocumentCode
1543119
Title
Iterative Mode-Dropping for the Sum Capacity of MIMO-MAC with Per-Antenna Power Constraint
Author
Zhu, Yang ; Vu, Mai
Author_Institution
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Volume
60
Issue
9
fYear
2012
fDate
9/1/2012 12:00:00 AM
Firstpage
2421
Lastpage
2426
Abstract
We propose an iterative mode-dropping algorithm that optimizes input signals to achieve the sum capacity of the MIMO-MAC with per-antenna power constraint. The algorithm successively optimizes each user´s input covariance matrix by applying mode-dropping to the equivalent single-user MIMO rate maximization problem. Both analysis and simulation show fast convergence. We then use the algorithm to briefly highlight the difference in MIMO-MAC capacities under sum and per-antenna power constraints.
Keywords
MIMO communication; antenna arrays; channel capacity; covariance matrices; iterative methods; multi-access systems; optimisation; MIMO-MAC sum capacity; covariance matrix; iterative mode-dropping algorithm; multiple-access channel sum capacity; per-antenna power constraint; single-user MIMO rate maximization problem; Antenna feeds; MIMO; Multiaccess communication; Multiple-access channels (MAC); multiuser MIMO; per-antenna power; sum capacity;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOMM.2012.061212.110200
Filename
6220214
Link To Document