Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation

Risa Shioi; Takashi Imamura; Yukitoshi Sanada

doi:10.1109/VTC2021-Fall52928.2021.9625411

Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation

Risa Shioi, Takashi Imamura, Yukitoshi Sanada

Department of Electronics and Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, two-stage BP detection is proposed for overloaded MIMO. In the two-stage BP detection scheme, the BP with MMSE pre-cancellation algorithm followed by the normal BP detection is applied. In overloaded MIMO systems, the loops in a factor graph degrade the demodulation performance of BP detection. MMSE pre-cancellation reduces the number of connections or coefficient values in the factor graph and improves the convergence characteristics of posteriori probabilities. Numerical results obtained through computer simulation have shown that the BERs of the proposed two-stage BP detection are about 1.0-1.5dB better than those of the conventional BP with MMSE pre-cancellation when the MMSE block size is four and the number of MMSE blocks is one.

Original language	English
Title of host publication	2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781665413688
DOIs	https://doi.org/10.1109/VTC2021-Fall52928.2021.9625411
Publication status	Published - 2021
Event	94th IEEE Vehicular Technology Conference, VTC 2021-Fall - Virtual, Online, United States Duration: 2021 Sept 27 → 2021 Sept 30

Publication series

Name	IEEE Vehicular Technology Conference
Volume	2021-September
ISSN (Print)	1550-2252

Conference

Conference	94th IEEE Vehicular Technology Conference, VTC 2021-Fall
Country/Territory	United States
City	Virtual, Online
Period	21/9/27 → 21/9/30

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VTC2021-Fall52928.2021.9625411

Cite this

Shioi, R., Imamura, T., & Sanada, Y. (2021). Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation. In 2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings (IEEE Vehicular Technology Conference; Vol. 2021-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTC2021-Fall52928.2021.9625411

Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation. / Shioi, Risa; Imamura, Takashi; Sanada, Yukitoshi.
2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. (IEEE Vehicular Technology Conference; Vol. 2021-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Shioi, R, Imamura, T & Sanada, Y 2021, Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation. in 2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings. IEEE Vehicular Technology Conference, vol. 2021-September, Institute of Electrical and Electronics Engineers Inc., 94th IEEE Vehicular Technology Conference, VTC 2021-Fall, Virtual, Online, United States, 21/9/27. https://doi.org/10.1109/VTC2021-Fall52928.2021.9625411

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abstract = "In this paper, two-stage BP detection is proposed for overloaded MIMO. In the two-stage BP detection scheme, the BP with MMSE pre-cancellation algorithm followed by the normal BP detection is applied. In overloaded MIMO systems, the loops in a factor graph degrade the demodulation performance of BP detection. MMSE pre-cancellation reduces the number of connections or coefficient values in the factor graph and improves the convergence characteristics of posteriori probabilities. Numerical results obtained through computer simulation have shown that the BERs of the proposed two-stage BP detection are about 1.0-1.5dB better than those of the conventional BP with MMSE pre-cancellation when the MMSE block size is four and the number of MMSE blocks is one. ",

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Overloaded MIMO Detection Based on Two-Stage Belief Propagation with MMSE Pre-Cancellation

Abstract

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