Proceedings ArticleDOI
Enlarged QR-LRL based SM-MIMO detector for efficient soft output generation
TLDR
An enlargement of candidate vector set of QR-LRL based MIMO detector for efficient soft output generation is proposed in this article, which effectively removes EVS problem and achieves soft output ML performance while keeping the computation complexity low, especially at low modulation order.Abstract:
An enlargement of candidate vector set of QR-LRL (QR — Least Reliable Layer) based MIMO detector for efficient soft output generation is proposed. Previous work [8] shows that QR-LRL based MIMO detector approaches hard decision output ML performance, but does not match the soft output ML performance due to empty candidate vector set problem. Performance degradation is more severe when modulation order is low. Some of the previous methods have provided solutions to mitigate Empty Vector Set (EVS) problem [4] [8] [9], but are not efficient in terms of performance or computation complexity. In this paper, we enlarged candidate vector set of QR-LRL detector by applying every constellation point at each layer. The proposed detector thus effectively removes EVS problem and achieves soft ML performance while keeping the computation complexity low, especially at low modulation order.read more
Citations
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Book ChapterDOI
Maximum Likelihood Receiver for Multiple Channel Transmission Systems
TL;DR: In this paper, a maximum likelihood estimator for digital sequences disturbed by Gaussian noise, intersymbol interference (ISI) and interchannel interference (ICI) is derived.
Journal ArticleDOI
Mitigating Empty Vector Set Using Enlarged QRLRL-M Soft SM-MIMO Detector
TL;DR: The proposed detector effectively solves the EVS problem and achieves soft ML performance while keeping the computation complexity low, especially at low modulation order.
Proceedings ArticleDOI
Low Complexity Based QR-LRL OSIC Detector for Downlink NOMA-MIMO Systems
TL;DR: In this paper, the authors proposed low-complexity based QR-LRL detector to overcome jointly the interuser interference and interantenna interference for NOMA-MIMO downlink systems.
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Improved signal detection for multiuser MIMO system using BD QR-LRL
TL;DR: Simulation results showed that the proposed technique confirms improved detection compared to the conventional methods for multiuser scenario.
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Fixed-Point MIMO Detector for 5G New Radio
TL;DR: In this article, a fixed-point simulation of multiple-input and multiple-output (MIMO) with ordered successive interference cancellation (OSIC) detector for 5G new radio (NR) is presented.
References
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Likelihood Function for QRM-MLD Suitable for Soft-Decision Turbo Decoding and Its Performance for OFCDM MIMO Multiplexing in Multipath Fading Channel
Hiroyuki Kawai,Kenichi Higuchi,Noriyuki Maeda,Mamoru Sawahashi,Takumi Ito,Yoshikazu Kakura,Akihisa Ushirokawa,Hiroyuki Seki +7 more
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