Efficient Soft MIMO Detection Algorithms Based on Differential Metrics

Wang Yueh Chang, Ming-Xian Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The multiple-input multiple-output (MIMO) technology can make full use of spectrum and increase the communication throughput. In the coded MIMO system, the main challenge of soft detection is to efficiently generate the loglikelihood ratios (LLR) values for channel decoder. The exact maximum a posteriori (MAP) probability detection can guarantee the optimal performance, but its realization is difficult due to its enormous complexity. In this paper, we propose efficient soft detection algorithms based on differential metrics. We apply the differential metrics for the list sphere decoding, and propose the list gradient algorithm. We further propose a novel algorithm that can generate the values of LLR and provide a trade-off between performance and complexity. The proposed algorithms do not need the QR decomposition and matrix inversion. The proposed algorithms have fixed complexity, and are appropriate for pipelined hardware implementation. The numerical results verify the efficiency of our algorithms.

Original languageEnglish
Title of host publication2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2017-June
ISBN (Electronic)9781509059324
DOIs
Publication statusPublished - 2017 Nov 14
Event85th IEEE Vehicular Technology Conference, VTC Spring 2017 - Sydney, Australia
Duration: 2017 Jun 42017 Jun 7

Other

Other85th IEEE Vehicular Technology Conference, VTC Spring 2017
CountryAustralia
CitySydney
Period17-06-0417-06-07

Fingerprint

Multiple-input multiple-output (MIMO)
Metric
Log-likelihood Ratio
QR Decomposition
Detection Probability
Matrix Inversion
Multiple-input multiple-output (MIMO) Systems
Maximum a Posteriori
Gradient Algorithm
Hardware Implementation
Decoding
Throughput
Trade-offs
Verify
Numerical Results
Decomposition
Hardware
Communication

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Chang, W. Y., & Chang, M-X. (2017). Efficient Soft MIMO Detection Algorithms Based on Differential Metrics. In 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings (Vol. 2017-June). [8108240] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCSpring.2017.8108240
Chang, Wang Yueh ; Chang, Ming-Xian. / Efficient Soft MIMO Detection Algorithms Based on Differential Metrics. 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings. Vol. 2017-June Institute of Electrical and Electronics Engineers Inc., 2017.
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Chang, WY & Chang, M-X 2017, Efficient Soft MIMO Detection Algorithms Based on Differential Metrics. in 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings. vol. 2017-June, 8108240, Institute of Electrical and Electronics Engineers Inc., 85th IEEE Vehicular Technology Conference, VTC Spring 2017, Sydney, Australia, 17-06-04. https://doi.org/10.1109/VTCSpring.2017.8108240

Efficient Soft MIMO Detection Algorithms Based on Differential Metrics. / Chang, Wang Yueh; Chang, Ming-Xian.

2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings. Vol. 2017-June Institute of Electrical and Electronics Engineers Inc., 2017. 8108240.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Chang WY, Chang M-X. Efficient Soft MIMO Detection Algorithms Based on Differential Metrics. In 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings. Vol. 2017-June. Institute of Electrical and Electronics Engineers Inc. 2017. 8108240 https://doi.org/10.1109/VTCSpring.2017.8108240