Paper Info
Title
Variable List Detection For Multiuser Mimo Systems
Abstract
In this paper, we propose a list detection scheme for the uplink scenario of multiuser multiple-input-multiple-output (MU-MIMO) systems. The proposed technique employs a single lattice reduction (LR) transformation to modify the channel matrix between the users and the base station, which produces a new nearly orthogonal channel matrix and allows for a more efficient detection. After the LR transformation, a reliable candidate for the transmitted signal vector, which is provided by successive interference cancelation detection with a cancelation ordering strategy based on the mean square error in the LR domain, is obtained. An algorithmto decide if the current candidate has good quality or if it is necessary to further explore different orderings to improve the estimation quality is employed. The proposed algorithm sets a minimum number of candidates to be tested and employs a stopping criterion to keep the number of candidates from growing excessively. Simulation results indicate that the proposed variable list detection (VLD) scheme has a near-optimal performance while keeping its computational complexity well below that of the maximum-likelihood detector. An iterative detection and decoding scheme based on the VLD algorithm is also developed, producing an excellent performance that approaches the single-user scenario.
Year
DOI
Venue
2017
10.1109/TVT.2016.2586942
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
Keywords
Field
DocType
Iterative detection and decoding (IDD), lattice reduction (LR), multiuser multiple-input multiple-output (MU-MIMO), successive interference cancelation (SIC), variable list detection (VLD)
Base station,Computer science,MIMO,Mean squared error,Communication channel,Electronic engineering,Decoding methods,Lattice reduction,Telecommunications link,Computational complexity theory
Journal
Volume
Issue
ISSN
66
4
0018-9545
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Leonel Arevalo143.12
Rodrigo C. de Lamare21461179.59
Raimundo Sampaio Neto315525.30