Open AccessEfficient Near‐Optimal Detection with Generalized Sphere Decoder for Blind MU‐MIMO Systems
Author(s) -
Kim Minjoon,
Park Jangyong,
Kim Hyunsub,
Kim Jaeseok
Publication year - 2014
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.14.0213.0506
Subject(s) - precoding , mimo , interference (communication) , scheme (mathematics) , algorithm , control theory (sociology) , zero forcing precoding , mathematics , computer science , decoding methods , multi user mimo , telecommunications , beamforming , artificial intelligence , channel (broadcasting) , mathematical analysis , control (management)
In this letter, we propose an efficient near‐optimal detection scheme (that makes use of a generalized sphere decoder (GSD)) for blind multi‐user multiple‐input multiple‐output (MU‐MIMO) systems. In practical MU‐MIMO systems, a receiver suffers from interference because the precoding matrix, the result of the precoding technique used, is quantized with limited feedback and is thus imperfect. The proposed scheme can achieve near‐optimal performance with low complexity by using a GSD to detect several additional interference signals. In addition, the proposed scheme is suitable for use in blind systems.