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.
|
Text
Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks.pdf Download (46kB) | Preview |
|
|
Text
Network coding schemes with efficient LDPC coded MIMO–NOMA in two-way relay networks1.pdf Download (1MB) | Preview |
Abstract
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.
| Item Type: | Article |
|---|---|
| Keyword: | Epi-neoverrucosane, Diterpenoid, Pleurozia subinfata, Live |
| Subjects: | Q Science > QH Natural history > QH301-705.5 Biology (General) |
| Department: | INSTITUTE > Institute for Tropical Biology and Conservation |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 21 Jul 2020 09:46 |
| Last Modified: | 21 Jul 2020 09:46 |
| URI: | https://eprints.ums.edu.my/id/eprint/25640 |
Actions (login required)
 |
View Item |