Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks
The combination of non-orthogonal multiple access (NOMA) and multi-input multi-output (MIMO) approaches has been considered as assuring multiple access for the fifth generation technology. In this study, the performance of a 2 × 2 MIMO- NOMA system with low-density parity check (LDPC) codes is inves...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
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2020
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| Online Access: | https://eprints.ums.edu.my/id/eprint/25640/1/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks.pdf https://eprints.ums.edu.my/id/eprint/25640/2/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks1.pdf |
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| author | Takashi Kamada1,2 · Mary Lyn Johanis2 · Ng, Shean Yeaw Phan, Chin Soon Monica Suleiman Charles Santhanaraju Vairappan |
| author_facet | Takashi Kamada1,2 · Mary Lyn Johanis2 · Ng, Shean Yeaw Phan, Chin Soon Monica Suleiman Charles Santhanaraju Vairappan |
| author_sort | Takashi Kamada1,2 · |
| collection | UMS |
| description | The combination of non-orthogonal multiple access (NOMA) and multi-input multi-output (MIMO) approaches has been considered as assuring multiple access for the fifth generation technology. In this study, the performance of a 2 × 2 MIMO- NOMA system with low-density parity check (LDPC) codes is investigated. Redundancy with randomly interleaved differential encoding (R-RIDE) is proposed and applied to LDPC encoded messages by two users. LDPC decoding is done using the sum-product algorithm (SPA), which has two types of decoding methods, hard-decision and soft-decision. For hard-decision, bit-flipping decoder is used and for soft-decision, probability domain, log-domain, and simplified log-domain decoders are used. Bit error rate (BER) versus signal-to-noise ratio (SNR) in (dB) and average mutual information (AMI) in (bps/Hz) versus SNR (dB) are evaluated to compare the performance of the proposed and conventional LDPC schemes in NOMA and MIMO-NOMA systems. Simulation results show that both AMI and BER of the proposed LDPC-R-RIDE in MIMO-NOMA system greatly outperforms conventional LDPC coded schemes in NOMA and MIMO-NOMA systems. Moreover, the proposed R-RIDE-LDPC in MIMO-NOMA system outperforms the proposed scheme in the NOMA system. From the simulation results, LDPC-R-RIDE with simplified log-domain decoder has the best AMI result and BER performance compared with other decoding methods. |
| first_indexed | 2024-03-06T03:03:51Z |
| format | Article |
| id | ums.eprints-25640 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:03:51Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ums.eprints-256402020-07-21T01:46:09Z https://eprints.ums.edu.my/id/eprint/25640/ Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks Takashi Kamada1,2 · Mary Lyn Johanis2 · Ng, Shean Yeaw Phan, Chin Soon Monica Suleiman Charles Santhanaraju Vairappan QH301-705.5 Biology (General) The combination of non-orthogonal multiple access (NOMA) and multi-input multi-output (MIMO) approaches has been considered as assuring multiple access for the fifth generation technology. In this study, the performance of a 2 × 2 MIMO- NOMA system with low-density parity check (LDPC) codes is investigated. Redundancy with randomly interleaved differential encoding (R-RIDE) is proposed and applied to LDPC encoded messages by two users. LDPC decoding is done using the sum-product algorithm (SPA), which has two types of decoding methods, hard-decision and soft-decision. For hard-decision, bit-flipping decoder is used and for soft-decision, probability domain, log-domain, and simplified log-domain decoders are used. Bit error rate (BER) versus signal-to-noise ratio (SNR) in (dB) and average mutual information (AMI) in (bps/Hz) versus SNR (dB) are evaluated to compare the performance of the proposed and conventional LDPC schemes in NOMA and MIMO-NOMA systems. Simulation results show that both AMI and BER of the proposed LDPC-R-RIDE in MIMO-NOMA system greatly outperforms conventional LDPC coded schemes in NOMA and MIMO-NOMA systems. Moreover, the proposed R-RIDE-LDPC in MIMO-NOMA system outperforms the proposed scheme in the NOMA system. From the simulation results, LDPC-R-RIDE with simplified log-domain decoder has the best AMI result and BER performance compared with other decoding methods. 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/25640/1/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks.pdf text en https://eprints.ums.edu.my/id/eprint/25640/2/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks1.pdf Takashi Kamada1,2 · and Mary Lyn Johanis2 · and Ng, Shean Yeaw and Phan, Chin Soon and Monica Suleiman and Charles Santhanaraju Vairappan (2020) Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks. Natural Products and Bioprospecting, 10 (1). pp. 1-6. https://doi.org/10.1007/s13659-020-00232-6 |
| spellingShingle | QH301-705.5 Biology (General) Takashi Kamada1,2 · Mary Lyn Johanis2 · Ng, Shean Yeaw Phan, Chin Soon Monica Suleiman Charles Santhanaraju Vairappan Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title | Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title_full | Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title_fullStr | Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title_full_unstemmed | Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title_short | Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks |
| title_sort | network coding schemes with efficient ldpc coded mimo noma in two way relay networks |
| topic | QH301-705.5 Biology (General) |
| url | https://eprints.ums.edu.my/id/eprint/25640/1/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks.pdf https://eprints.ums.edu.my/id/eprint/25640/2/Network%20coding%20schemes%20with%20efficient%20LDPC%20coded%20MIMO%E2%80%93NOMA%20in%20two-way%20relay%20networks1.pdf |
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