Exploiting hybrid decode-and-forward – amplify-and-forward in NOMA: an application to device-to-device networks

Dang, Huu-Phuc; Nguyen, Minh-Sang Van; Thuan, Dinh; Pham, Hong Lien

doi:10.1504/ijcnds.2020.108873

Cited by 4 publications

(5 citation statements)

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“…This is useful to combat the effect of multipath fading in the wireless networks. In literature, numbers of papers are proposed (Tregancini et al, 2020;Zhao et al, 2019;Bai et al, 2020;Guo et al, 2020;Le and Do, 2020;Dang et al, 2020)] which evaluate the performance of multi-antenna TWRN based on different performance parameters. For example, Tregancini et al (2020) investigates a cooperative communication system that uses a set of full-duplex (FD) amplify-and-forward (AF) relays for outage probability and ergodic capacity.…”

Section: Introductionmentioning

confidence: 99%

“…The secrecy performance is presented through a low complexity relay selection scheme for applications in 5G large scale networks. Dang et al (2020) gives a trade-off between outage probability and power allocation using a hybrid AF and DF relaying scheme on the basis of a given signal-to-interference-plus-noise ratio (SINR) at the relay. In order to enable secure transmission in cooperative relaying environment, beamforming is introduced in TWRN (Rahimi and Shahbazpanahi, 2017;Tian et al, 2020;Li and Yang, 2020;Shim et al, 2016;Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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A reduced hardware complexity algorithm with improved outage probability for 5G communication system

Taneja¹,

Saluja²

2022

IJCNDS

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In this paper, a 5G mobile communication system is considered with cooperative environment. The mobile and base-station node communicate with each other through a number of amplify-and-forward (AF) relays. The users have multiple antennas while each relay has a single antenna. The radio-frequency (RF) transceiver chain associated with each antenna element leads to increased hardware complexity. This challenge is reduced by efficient utilisation of RF front ends in the proposed wireless system. The paper proposes an RF chain selection technique which enables the selection of RF front end with maximum received signal-to-noise-ratio (SNR). The outage probability is derived for proposed mobile communication system. Further, system ergodic capacity, energy efficiency and average end-to-end SNR are evaluated. As compared to the conventional random selection approach, this algorithm aims to achieve higher capacity and higher average end-to-end-SNR. At 16 dB SNR, system capacity improves by 52% with proposed algorithm rather than conventional random selection.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A reduced hardware complexity algorithm with improved outage probability for 5G communication system

Taneja¹,

Saluja²

2022

IJCNDS

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show abstract

Section: Introductionmentioning

confidence: 99%

“…In cooperative NOMA relaying schemes, choosing a suitable relay protocol is important for system performance; a proper relaying scheme can significantly enhance the system capacity [ 6 ] and outage probability [ 19 ]. In [ 6 ], cooperative CR-NOMA scheme (by using joint OMA and NOMA) is investigated with respect to AF and DF relaying protocols; however, the analysis in [ 19 ] is limited to a downlink D2D NOMA system. The authors in [ 6 ] showed that AF relaying protocol performs better than the DF protocol in terms of achievable rate regions under optimized allocation of time and power fractions in the joint OMA and NOMA scheme.…”

Section: Introductionmentioning

confidence: 99%

“…Besides choosing an appropriate relaying protocol, the design and optimization of a cooperative relaying scheme with rate guarantees is a challenging task, especially in the primary–secondary coexisting system (i.e., cooperative CR-NOMA system as studied in [ 6 , 13 , 14 , 15 , 16 , 17 , 18 ]). In this paper, motivated by the results in [ 6 , 19 ], we study different relaying protocols, including AF, DF, and piece-wise and forward (PF) in such cooperative networks. PF protocol finds its origin in the estimate and forward (EF) protocol, which is shown to be the best relay protocol in the conventional cooperative relaying systems in terms of bit error rate (BER) [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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Multiple Access-Enabled Relaying with Piece-Wise and Forward NOMA: Rate Optimization under Reliability Constraints

Khodakhah

Mahmood

Österberg

et al. 2021

Sensors

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The increasing proliferation of Internet-of-things (IoT) networks in a given space requires exploring various communication solutions (e.g., cooperative relaying, non-orthogonal multiple access, spectrum sharing) jointly to increase the performance of coexisting IoT systems. However, the design complexity of such a system increases, especially under the constraints of performance targets. In this respect, this paper studies multiple-access enabled relaying by a lower-priority secondary system, which cooperatively relays the incoming information to the primary users and simultaneously transmits its own data. We consider that the direct link between the primary transmitter–receiver pair uses orthogonal multiple access in the first phase. In the second phase, a secondary transmitter adopts a relaying strategy to support the direct link while it uses non-orthogonal multiple access (NOMA) to serve the secondary receiver. As a relaying scheme, we propose a piece-wise and forward (PF) relay protocol, which, depending on the absolute value of the received primary signal, acts similar to decode-and-forward (DF) and amplify-and-forward (AF) schemes in high and low signal-to-noise ratio (SNR), respectively. By doing so, PF achieves the best of these two relaying protocols using the adaptive threshold according to the transmitter-relay channel condition. Under PF-NOMA, first, we find the achievable rate region for primary and secondary receivers, and then we formulate an optimization problem to derive the optimal PF-NOMA time and power fraction that maximize the secondary rate subject to reliability constraints on both the primary and the secondary links. Our simulation results and analysis show that the PF-NOMA outperforms DF-NOMA and AF-NOMA-based relaying techniques in terms of achievable rate regions and rate-guaranteed relay locations.

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A novel minimal set decode-amplify-forward (MS-DAF) relaying scheme for MIMO-NOMA

et al. 2022

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Exploiting hybrid decode-and-forward – amplify-and-forward in NOMA: an application to device-to-device networks

Cited by 4 publications

References 0 publications

A reduced hardware complexity algorithm with improved outage probability for 5G communication system

A reduced hardware complexity algorithm with improved outage probability for 5G communication system

Multiple Access-Enabled Relaying with Piece-Wise and Forward NOMA: Rate Optimization under Reliability Constraints

A novel minimal set decode-amplify-forward (MS-DAF) relaying scheme for MIMO-NOMA

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