A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations

Shuliang Hao; Xin Su; Jie Zeng; Xin Ma; Tiejun Lv

doi:10.1109/ISMICT.2018.8573712

A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations

Shuliang Hao, Xin Su, Jie Zeng, Xin Ma, Tiejun Lv

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

3 Citations (Scopus)

Abstract

Sparse code multiple access (SCMA), a competitive air-interface technology with the message passing algorithm (MPA) employed at the receiver, has a broad application prospect. However, the computational complexity of MPA is still an extreme challenge for SCMA decoding. In this paper, a low complexity multiuser detection algorithm based on avoiding redundant iterations, namely Avoiding Redundant Iterations-MPA (ARI-MPA), is proposed for the uplink SCMA system. ARI-MPA can achieve low complexity by avoiding redundant iterations, in which the number of iterations required is determined by the convergence rate of codeword probability. Numerical results demonstrate that the proposed scheme can achieve an affordable trade-off between bit error ratio (BER) performance and decoding complexity for the SCMA system.

Original language	English
Title of host publication	12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
Publisher	IEEE Computer Society
ISBN (Electronic)	9781538633892
DOIs	https://doi.org/10.1109/ISMICT.2018.8573712
Publication status	Published - 11 Dec 2018
Externally published	Yes
Event	12th International Symposium on Medical Information and Communication Technology, ISMICT 2018 - Sydney, Australia Duration: 26 Mar 2018 → 28 Mar 2018

Publication series

Name	International Symposium on Medical Information and Communication Technology, ISMICT
Volume	2018-March
ISSN (Print)	2326-828X
ISSN (Electronic)	2326-8301

Conference

Conference	12th International Symposium on Medical Information and Communication Technology, ISMICT 2018
Country/Territory	Australia
City	Sydney
Period	26/03/18 → 28/03/18

Keywords

Sparse code multiple access
avoiding redundant iterations
message passing algorithm
multiuser detection

Access to Document

10.1109/ISMICT.2018.8573712

Cite this

Hao, S., Su, X., Zeng, J., Ma, X., & Lv, T. (2018). A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations. In 12th International Symposium on Medical Information and Communication Technology, ISMICT 2018 Article 8573712 (International Symposium on Medical Information and Communication Technology, ISMICT; Vol. 2018-March). IEEE Computer Society. https://doi.org/10.1109/ISMICT.2018.8573712

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title = "A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations",

abstract = "Sparse code multiple access (SCMA), a competitive air-interface technology with the message passing algorithm (MPA) employed at the receiver, has a broad application prospect. However, the computational complexity of MPA is still an extreme challenge for SCMA decoding. In this paper, a low complexity multiuser detection algorithm based on avoiding redundant iterations, namely Avoiding Redundant Iterations-MPA (ARI-MPA), is proposed for the uplink SCMA system. ARI-MPA can achieve low complexity by avoiding redundant iterations, in which the number of iterations required is determined by the convergence rate of codeword probability. Numerical results demonstrate that the proposed scheme can achieve an affordable trade-off between bit error ratio (BER) performance and decoding complexity for the SCMA system.",

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author = "Shuliang Hao and Xin Su and Jie Zeng and Xin Ma and Tiejun Lv",

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year = "2018",

month = dec,

day = "11",

doi = "10.1109/ISMICT.2018.8573712",

language = "English",

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Hao, S, Su, X, Zeng, J, Ma, X & Lv, T 2018, A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations. in 12th International Symposium on Medical Information and Communication Technology, ISMICT 2018., 8573712, International Symposium on Medical Information and Communication Technology, ISMICT, vol. 2018-March, IEEE Computer Society, 12th International Symposium on Medical Information and Communication Technology, ISMICT 2018, Sydney, Australia, 26/03/18. https://doi.org/10.1109/ISMICT.2018.8573712

A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations. / Hao, Shuliang; Su, Xin; Zeng, Jie et al.
12th International Symposium on Medical Information and Communication Technology, ISMICT 2018. IEEE Computer Society, 2018. 8573712 (International Symposium on Medical Information and Communication Technology, ISMICT; Vol. 2018-March).

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

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T1 - A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations

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AU - Su, Xin

AU - Zeng, Jie

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AU - Lv, Tiejun

PY - 2018/12/11

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N2 - Sparse code multiple access (SCMA), a competitive air-interface technology with the message passing algorithm (MPA) employed at the receiver, has a broad application prospect. However, the computational complexity of MPA is still an extreme challenge for SCMA decoding. In this paper, a low complexity multiuser detection algorithm based on avoiding redundant iterations, namely Avoiding Redundant Iterations-MPA (ARI-MPA), is proposed for the uplink SCMA system. ARI-MPA can achieve low complexity by avoiding redundant iterations, in which the number of iterations required is determined by the convergence rate of codeword probability. Numerical results demonstrate that the proposed scheme can achieve an affordable trade-off between bit error ratio (BER) performance and decoding complexity for the SCMA system.

AB - Sparse code multiple access (SCMA), a competitive air-interface technology with the message passing algorithm (MPA) employed at the receiver, has a broad application prospect. However, the computational complexity of MPA is still an extreme challenge for SCMA decoding. In this paper, a low complexity multiuser detection algorithm based on avoiding redundant iterations, namely Avoiding Redundant Iterations-MPA (ARI-MPA), is proposed for the uplink SCMA system. ARI-MPA can achieve low complexity by avoiding redundant iterations, in which the number of iterations required is determined by the convergence rate of codeword probability. Numerical results demonstrate that the proposed scheme can achieve an affordable trade-off between bit error ratio (BER) performance and decoding complexity for the SCMA system.

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A Low Complexity SCMA Detector Based on Avoiding Redundant Iterations

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