A Bit-Filp Joint Algorithm of Polar-SCMA Systems for mMTC

The conflict between limited spectrum resources and the need for massive machine-type communications (mMTC) is becoming more significant. To address these challenges, Sparse Code Multiple Access (SCMA) has emerged as a promising solution for mMTC in 5G. SCMA allows many users to share time and frequ...

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Bibliographic Details
Published in:2023 IEEE IAS Global Conference on Emerging Technologies (GlobConET) pp. 1 - 6
Main Authors: Wei, Qiao, Wenping, Ge, Shiwei, Zhang, Yin, Sun
Format: Conference Proceeding
Language:English
Published: IEEE 19.05.2023
Subjects:
5G mobile communication
bit-flip
Codes
joint iterative detection decoding
polar codes
Reliability
Scalability
Simulation
sparse code multiple access
Spectral efficiency
Time-frequency analysis
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Summary:The conflict between limited spectrum resources and the need for massive machine-type communications (mMTC) is becoming more significant. To address these challenges, Sparse Code Multiple Access (SCMA) has emerged as a promising solution for mMTC in 5G. SCMA allows many users to share time and frequency resources, increasing spectral efficiency and receiving increased attention in the mMTC domain. As a control channel coding scheme in 5G communication systems, polar codes (PC) offer dependable data transmission capabilities. This paper presents a joint algorithm for an uplink PC-SCMA receiver that yields a reasonable block error rate (BLER) performance and an overload rate of 150% for mMTC. Generally, the previous error bit leads to much decoding error propagation in the following information bits for the iterative algorithm. We propose a bit-flip-assisted joint iterative detection decoding (BF-JIDD) algorithm for the error propagation problem in JIDD. Based on the simulation results, it can be concluded that the BF-JIDD algorithm outperforms the JIDD algorithm in terms of BLER performance.
DOI:10.1109/GlobConET56651.2023.10149998