Low complexity multiuser MIMO scheduling for weighted sum rate maximization

Author

Venkatraman, Ganesh ; Tolli, Antti ; Janhunen, Janne ; Juntti, Markku

Author_Institution

Center for Wireless Commun. (CWC), Univ. of Oulu, Oulu, Finland

fYear

2014

fDate

1-5 Sept. 2014

Firstpage

820

Lastpage

824

Abstract

The paper addresses user scheduling schemes for the multiuser multiple-input multiple-output (MU-MIMO) transmission with the objective of sum rate maximization (SRM) and the weighted counterpart in a single cell scenario. We propose a low complex product of independent projection displacements (PIPD) scheduling scheme, which performs the user selection for the MU-MIMO system with significantly lower complexity in comparison with the existing successive projections (SP) based designs. The PIPD scheme uses series of independent vector projections to evaluate the decision metrics. In addition, we also propose a heuristic algorithm of weighted scheduling, addressing the weighted sum rate maximization (WSRM) objective, which can be used with any scheduling algorithm. The performance of the weighted scheduling schemes are studied with the objective of minimizing the queues.

Keywords

MIMO communication; minimisation; multiuser channels; queueing theory; scheduling; vectors; MU-MIMO system; PIPD scheduling scheme; decision metrics; heuristic algorithm; independent vector projections; low complexity multiuser MIMO scheduling; multiuser multiple-input multiple-output transmission; product-of-independent projection displacements scheduling scheme; queue minimization; radio access technologies; user scheduling schemes; user selection; weighted sum rate maximization; Complexity theory; MIMO; Measurement; Null space; Scheduling; Scheduling algorithms; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference (EUSIPCO), 2014 Proceedings of the 22nd European

Conference_Location

Lisbon

Type

conf

Filename

6952263