Low-complexity hybrid interference cancellation for sparse code multiple access
Abstract Sparse Code Multiple Access (SCMA) is one of Non Orthogonal Multiple Access (NOMA) candidates for 5G, the fifth generation mobile network. Multiple overlapped blocks of SCMA code are transmitted per frequency layer which compels the receiver to cancel unwanted SCMA code blocks. Thanks to th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-09-01
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| Series: | EURASIP Journal on Wireless Communications and Networking |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13638-022-02162-y |
| _version_ | 1811208805286936576 |
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| author | Bilal Ghani Frederic Launay Yannis Pousset Clency Perrine Jean Pierre Cances |
| author_facet | Bilal Ghani Frederic Launay Yannis Pousset Clency Perrine Jean Pierre Cances |
| author_sort | Bilal Ghani |
| collection | DOAJ |
| description | Abstract Sparse Code Multiple Access (SCMA) is one of Non Orthogonal Multiple Access (NOMA) candidates for 5G, the fifth generation mobile network. Multiple overlapped blocks of SCMA code are transmitted per frequency layer which compels the receiver to cancel unwanted SCMA code blocks. Thanks to the sparsity of SCMA, Message Passing Algorithm (MPA) achieves near-optimal performance. Nevertheless, this process is time-consuming and has a high degree of complexity even if Max-Log Algorithm is used. The major contribution of this paper is to propose a new decoding scheme called Hybrid Interference Cancellation (HIC) to reduce time processing without degrading a target Bit Error Rate (BER). The HIC decodes and removes the strongest user, reducing the complexity of Log Domain MPA decoding of remaining users, followed by a Low Density Parity Code (LDPC) decoder. The interference cancellation decoder is either a hard interference cancellation or a soft interference cancellation. The originality of the paper is to calculate a threshold value based on power measurements to decide whether hard decoder or soft decoder should be used to reach the BER target with a lower complexity. Results show a significant reduction in terms of complexity as compared to the traditional MPA process for the same values of BER. |
| first_indexed | 2024-04-12T04:29:04Z |
| format | Article |
| id | doaj.art-72114b8e6a3f4deb932f3d30e49c6871 |
| institution | Directory Open Access Journal |
| issn | 1687-1499 |
| language | English |
| last_indexed | 2024-04-12T04:29:04Z |
| publishDate | 2022-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Wireless Communications and Networking |
| spelling | doaj.art-72114b8e6a3f4deb932f3d30e49c68712022-12-22T03:48:00ZengSpringerOpenEURASIP Journal on Wireless Communications and Networking1687-14992022-09-012022112610.1186/s13638-022-02162-yLow-complexity hybrid interference cancellation for sparse code multiple accessBilal Ghani0Frederic Launay1Yannis Pousset2Clency Perrine3Jean Pierre Cances4LIAS (EA 6315), Université de PoitiersLIAS (EA 6315), Université de PoitiersXLIM (UMR CNRS 7252), Université de PoitiersXLIM (UMR CNRS 7252), Université de PoitiersXLIM (UMR CNRS 7252), Université de LimogesAbstract Sparse Code Multiple Access (SCMA) is one of Non Orthogonal Multiple Access (NOMA) candidates for 5G, the fifth generation mobile network. Multiple overlapped blocks of SCMA code are transmitted per frequency layer which compels the receiver to cancel unwanted SCMA code blocks. Thanks to the sparsity of SCMA, Message Passing Algorithm (MPA) achieves near-optimal performance. Nevertheless, this process is time-consuming and has a high degree of complexity even if Max-Log Algorithm is used. The major contribution of this paper is to propose a new decoding scheme called Hybrid Interference Cancellation (HIC) to reduce time processing without degrading a target Bit Error Rate (BER). The HIC decodes and removes the strongest user, reducing the complexity of Log Domain MPA decoding of remaining users, followed by a Low Density Parity Code (LDPC) decoder. The interference cancellation decoder is either a hard interference cancellation or a soft interference cancellation. The originality of the paper is to calculate a threshold value based on power measurements to decide whether hard decoder or soft decoder should be used to reach the BER target with a lower complexity. Results show a significant reduction in terms of complexity as compared to the traditional MPA process for the same values of BER.https://doi.org/10.1186/s13638-022-02162-ySCMANOMA5GMPAICHIC-MPA |
| spellingShingle | Bilal Ghani Frederic Launay Yannis Pousset Clency Perrine Jean Pierre Cances Low-complexity hybrid interference cancellation for sparse code multiple access EURASIP Journal on Wireless Communications and Networking SCMA NOMA 5G MPA IC HIC-MPA |
| title | Low-complexity hybrid interference cancellation for sparse code multiple access |
| title_full | Low-complexity hybrid interference cancellation for sparse code multiple access |
| title_fullStr | Low-complexity hybrid interference cancellation for sparse code multiple access |
| title_full_unstemmed | Low-complexity hybrid interference cancellation for sparse code multiple access |
| title_short | Low-complexity hybrid interference cancellation for sparse code multiple access |
| title_sort | low complexity hybrid interference cancellation for sparse code multiple access |
| topic | SCMA NOMA 5G MPA IC HIC-MPA |
| url | https://doi.org/10.1186/s13638-022-02162-y |
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