Network-coded MIMO-NOMA systems with FEC codes in two-way relay networks

Ngu War Hlaing and Ali Farzamnia and Muralindran Mariappan and Manas Kumar Haldar (2020) Network-coded MIMO-NOMA systems with FEC codes in two-way relay networks. International Journal of Communication Systems. pp. 1-16.


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This paper assumes two users and a two‐way relay network with the combination of 2×2 multi‐input multi‐output (MIMO) and nonorthogonal multiple access (NOMA). To achieve network reliability without sacrificing network throughput, network‐coded MIMO‐NOMA schemes with convolutional, Reed‐Solomon (RS), and turbo codes are applied. Messages from two users at the relay node are network‐coded and combined in NOMA scheme. Interleaved differential encoding with redundancy (R‐RIDE) scheme is proposed together with MIMO‐NOMA system. Quadrature phase‐shift keying (QPSK) modulation technique is used. Bit error rate (BER) versus signal‐to‐noise ratio (SNR) (dB) and average mutual information (AMI) (bps/Hz) versus SNR (dB) in NOMA and MIMO‐NOMA schemes are evaluated and presented. From the simulated results, the combination of MIMO‐NOMA system with the proposed R‐RIDE‐Turbo network‐coded scheme in two‐way relay networks has better BER and higher AMI performance than conventional coded NOMA system. Furthermore, R‐RIDE‐Turbo scheme in MIMO‐NOMA system outperforms the other coded schemes in both MIMO‐NOMA and NOMA systems.

Item Type: Article
Uncontrolled Keywords: interleaved differential encoding, MIMO, nonorthogonal multiple access scheme (NOMA), networkcoding, Reed-Solomon codes
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: FACULTY > Faculty of Engineering
Depositing User: NORAINI LABUK -
Date Deposited: 10 Jul 2020 14:52
Last Modified: 10 Jul 2020 14:52

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