Efficient Near‐Optimal Detection with Generalized Sphere Decoder for Blind MU‐MIMO Systems |
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| Authors: | Minjoon Kim Jangyong Park Hyunsub Kim Jaeseok Kim |
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| Affiliation: | Minjoon Kim (corresponding author, kmjsoc@yonsei.ac.kr), Jangyong Park (parkjang@yonsei.ac.kr), Hyunsub Kim (sarapio@yonsei.ac.kr), and Jaeseok Kim (jaekim@yonsei.ac.kr) are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Rep. of Korea. |
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| Abstract: | 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. |
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| Keywords: | Multi‐user multiple‐input multiple‐output MU‐MIMO multi‐user detection MUD sphere decoder |
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