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Implementation Aspects of Fixed-Complexity Soft-Output MIMO Detection
2009
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference
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This paper discusses implementation aspects of a recently proposed fixed-complexity soft-output (FCSO) symbol detector for MIMO systems [4] . ...
A further approximation to the FCSO detector is proposed which substantially reduces the complexity at the cost of a minor performance loss. ...
FIXED-COMPLEXITY MIMO DETECTION
A. Fixed-Complexity Soft-Output (FCSO) We take a 4 × 4 MIMO system using 64-QAM as a case study. ...
doi:10.1109/vetecs.2009.5073587
dblp:conf/vtc/WuLL09
fatcat:3bezfcqflvgg7fiapimcf6yfty
Algorithm and implementation of the K-best sphere decoding for MIMO detection
2006
IEEE Journal on Selected Areas in Communications
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As a low complexity MIMO decoding algorithm, the KSE is shown to be suitable for very large scale integration (VLSI) implementations and be capable of supporting soft outputs. ...
The proposed hard-output KSE decoder and the soft-output MKSE decoder is implemented for 4 4 16-quadrature amplitude modulation (QAM) MIMO detection in a 0.35-m and a 0.13-m CMOS technology, respectively ...
Liu (IMEC, Belgium) for the generous help on the soft-output decoding simulations. They would also like to thank A. ...
doi:10.1109/jsac.2005.862402
fatcat:effuoan7irbvppsm6k5xxplbg4
A Framework for Fixed Complexity Breadth-First MIMO Detection
2008
2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications
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All considered algorithms operate at fixed complexity and require only a single pass through the detection tree, making them very attractive for practical implementation. ...
Existing approaches are placed into this framework and a performance-complexity analysis is performed for both hard-output and soft-output detection. ...
However, the framework focuses on the case of hard-output detection, leaving some aspects aside which are relevant for soft-output detection. ...
doi:10.1109/isssta.2008.31
fatcat:ldwonmkcrzej5ed5x46lopva4u
Fixed effort MIMO decoders for wireless indoor channels: Theory and practical field trials
2008
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
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Index Terms-MIMO detection, line-of-sight, frequency selective channel, RS and IRS detectors, soft output information ...
Moreover, the proposed detector provides a soft output information for each transmitted bit, using the preselected candidates from the reduced search set which presents a promising aspect for the coded ...
However, the estimation of the soft output information can be of high complexity when using a sphere detector, since the a posteriori probability of each detected bit depends on the detected bits in the ...
doi:10.1109/pimrc.2008.4699784
dblp:conf/pimrc/ChouayakhKL08
fatcat:pi7dw4phere5pfxmx3ibd3tlpu
VLSI Implementation of a Fixed-Complexity Soft-Output MIMO Detector for High-Speed Wireless
2010
EURASIP Journal on Wireless Communications and Networking
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The VLSI implementation is based on a novel MIMO detection algorithm called Modified Fixed-Complexity Soft-Output (MFCSO) detection, which achieves a good trade-off between performance and implementation ...
The VLSI implementation of the detector is presented to show that real-time MIMO symbol detection of 20 MHz bandwidth 3GPP LTE and 10 MHz WiMAX downlink physical channel is achievable at reasonable silicon ...
Acknowledgments The work of D. Wu ...
doi:10.1155/2010/893184
fatcat:abdvzzdiqzetxoviw2m562cmri
CELLA: FPGA Based Candidate Execution with Low Latency Approach for Soft MIMO Detector
2016
Circuits and Systems
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The intention of this work is to observe the performance of Candidate Execution with Low Latency Approach for soft MIMO detector in FPGA (CELLA). ...
This paper describes the design and Field Programmable Gate Array (FPGA) based 4 × 4 breadth heuristic Multiple-Input-Multiple-Output (MIMO) decoder using 16 and 64 Quadrature Amplitude Modulation (QAM ...
The experimental results of the proposed system are implemented in Xilinx Virtex 5 XC5VSX240T platform. ...
doi:10.4236/cs.2016.78152
fatcat:b4ixu2ly3beg5eh4qmu6jxl2gy
VLSI Implementation of Hard- and Soft-Output Sphere Decoding for Wide-Band MIMO Systems
[chapter]
2012
IFIP Advances in Information and Communication Technology
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Hard-output sphere decoding (SD) and soft-output single tree-search (STS) SD are promising means for realizing high-performance MIMO detection and have been demonstrated to enable efficient implementations ...
In particular, a straightforward implementation of hard-output maximum-likelihood (ML) detection and soft-output a-posteriori probability (APP) detection-both providing excellent error-rate performance-requires ...
Luethi for their contributions during the design and implementation of the SD architectures. Furthermore, the authors gratefully acknowledge the support ...
doi:10.1007/978-3-642-28566-0_6
fatcat:e7arpoqrp5h75gzregw56kwe7u
A Survey of VLSI Implementations of Tree Search Algorithms for MIMO Detection
2015
Circuits, systems, and signal processing
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Multiple-input multiple-output (MIMO) detection algorithms have received considerable research interest in recent years, as a result of the increasing need for high data-rate communications. ...
We also present notable contributions that have been made in the last three decades in implementing TS algorithms for MIMO detection, especially with respect to achieving low-complexity, highthroughput ...
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution ...
doi:10.1007/s00034-015-0218-y
fatcat:4fa2dd7b4jhtrbbdygbv6cbtjy
VLSI Architecture for MIMO Soft-Input Soft-Output Sphere Detection
2012
Journal of Signal Processing Systems
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Achieving good detection performance while incurring low complexity is known to be one of the major challenges in multiple-input multiple-output (MIMO) communications based on spatial multiplexing. ...
Keywords MIMO · Iterative detection-decoding · Soft-input soft-output (SISO) detection · Sphere detection · Tuple search detector · SIMD · Pipeline-interleaving · VLSI architecture 2 Channel decoder is ...
Acknowledgements This work has been supported by the German Federal Ministry of Education and Research (BMBF) under grant 13N11810. ...
doi:10.1007/s11265-012-0709-z
fatcat:f4krjcmfzvcwhf42igkxxonlmq
Soft-Output Sphere Decoding: Performance and Implementation Aspects
2006
2006 Fortieth Asilomar Conference on Signals, Systems and Computers
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Multiple-input multiple-output (MIMO) detection algorithms providing soft information for a subsequent channel decoder pose significant implementation challenges due to their high computational complexity ...
In this paper, we show how sphere decoding can be used as an efficient tool to implement soft-output MIMO detection with flexible trade-offs between computational complexity and (error rate) performance ...
Max-Log Soft-Output Computation Soft-output MIMO detection requires the computation of LLRs for all coded bits. ...
doi:10.1109/acssc.2006.355132
fatcat:6sezlbrwibelbnbuf37p32nsre
Physics-Inspired Heuristics for Soft MIMO Detection in 5G New Radio and Beyond
[article]
2021
arXiv
pre-print
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Overcoming the conventional trade-off between throughput and bit error rate (BER) performance, versus computational complexity is a long-term challenge for uplink Multiple-Input Multiple-Output (MIMO) ...
ParaMax can achieve near optimal maximum-likelihood (ML) throughput performance in the Large MIMO regime, Massive MIMO systems where the base station has additional RF chains, to approach the number of ...
ACKNOWLEDGEMENTS We thank the anonymous shepherd and reviewers of this paper, the NASA Quantum AI Laboratory (QuAIL), and the Princeton Advanced Wireless Systems (PAWS) Group for their extensive technical ...
arXiv:2103.10561v1
fatcat:5j2rxerc7ja5xe4lxhwntqqzye
Soft-output sphere decoding: algorithms and VLSI implementation
2008
IEEE Journal on Selected Areas in Communications
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Index Terms-Multiple-input multiple-output (MIMO) communication systems, soft-output sphere decoding, VLSI implementation, MIMO detection. ...
Multiple-input multiple-output (MIMO) detection algorithms providing soft information for a subsequent channel decoder pose significant implementation challenges due to their high computational complexity ...
Computation of the Max-Log LLRs Soft-output MIMO detection requires the computation of LLRs, denoted as L(·), for all bits in the label x. ...
doi:10.1109/jsac.2008.080206
fatcat:jni46opwbrbgpdbz74fntlvaie
Efficient VLSI implementation of soft-input soft-output fixed-complexity sphere decoder
2012
IET Communications
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Fixed-complexity sphere decoder (FSD) is one of the most promising techniques for the implementation of multiple-input multiple-output (MIMO) detection, with relevant advantages in terms of constant throughput ...
Implementation aspects and details of the architecture are analyzed in order to provide a variety of performance-complexity trade-offs. ...
[6] is soft-input soft-output but can not be applied to the LSD. ...
doi:10.1049/iet-com.2011.0310
fatcat:5av5ggeuvfdzhpkuxqhqi7atcy
Iterative receivers combining MIMO detection with turbo decoding: performance-complexity trade-offs
2015
EURASIP Journal on Wireless Communications and Networking
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In this paper, the computational complexity of MIMO detection algorithms combined with turbo decoding is investigated. ...
Recently, iterative receiver combining multiple-input multiple-output (MIMO) detection with channel decoding has been widely considered to achieve near-capacity performance and reliable high data rate ...
Soft-input soft-output MIMO detection This section firstly reviews the optimal MAP detection algorithm. Then, it discusses several sub-optimal detection algorithms. ...
doi:10.1186/s13638-015-0305-6
fatcat:77nkhcpg4jatxbhrnxxqapqd34
Channel state information based LLR clipping in list MIMO detection
2008
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
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Suboptimal detection schemes, such as list MIMO detection, often face the challenge of having to "guess" at the decision reliability for some of the detected bits. ...
In this work we propose to use an SNR-aware approach for calculating the LLR clipping levels in list MIMO detection. ...
We conclude this section by providing a brief description of the complexity aspects for the SLC approach. ...
doi:10.1109/pimrc.2008.4699774
dblp:conf/pimrc/MillinerZBF08
fatcat:4sxddlhft5fbvbdaqg2dxwepru
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