Three-User Cooperative NOMA Transmission

Fang, Zhaoxi; Hu, Jian; Lu, Yingzhi; Ni, Wei

doi:10.1109/lwc.2019.2959302

Cited by 23 publications

(8 citation statements)

References 9 publications

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“…1 and Fig. 2, respectively [19], [20]. The channel gains between S-D, S-R respectively, are modeled as independent lognormal random variables [4].…”

Section: System Modelmentioning

confidence: 99%

Three-User Cooperative Dual-Stage Non-Orthogonal Multiple Access for Power Line Communications

Ramesh

Gurugopinath

Muhaidat

2023

IEEE Open J. Commun. Soc.

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We present a cooperative, dual-stage (DS) non-orthogonal multiple access (NOMA) scheme for power line communication (PLC) systems, where three PLC modems are served in two time slots. The network consists of a source (S) modem, two relay (R) modems and a destination (D) modem. In each of the two time slots, S communicates with one R using NOMA, and the other R communicates with D using the decode-and-forward technique. We consider both scenarios where a direct link may or may not exist between S and D. We derive expressions for the approximate average sum rate and overall outage probability of the network. Next, we formulate an optimization problem to find the optimal power allocation coefficients at S, such that the sum rate is maximized. We establish the accuracy of our approximations using Monte Carlo simulations. Furthermore, we show that our scheme outperforms the two-user single-stage and the DS schemes, and the three-user NOMA scheme proposed in the earlier literature, in terms of sum rate and outage probability.INDEX TERMS Cooperative power line communication, dual-stage, non-orthogonal multiple access, outage probability, sum rate.

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“…1 and Fig. 2, respectively [19], [20]. The channel gains between S-D, S-R respectively, are modeled as independent lognormal random variables [4].…”

Section: System Modelmentioning

confidence: 99%

Three-User Cooperative Dual-Stage Non-Orthogonal Multiple Access for Power Line Communications

Ramesh

Gurugopinath

Muhaidat

2023

IEEE Open J. Commun. Soc.

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“…29 A game theory framework for Mobile two-dimensional MIMO communication networks is proposed 30 to realize optimal relay selection and cooperative control. A new cooperative Non-orthogonal multiple access (NOMA) transmission scheme is proposed 31 for three-user downlink system, which is significantly superior to the prior art in terms of rate. A real-time scheme based on evolutionary fuzzy game is proposed, 32 which is used to make cooperative decisions on data distribution strategies of neighboring nodes on the road.…”

Section: Related Workmentioning

confidence: 99%

Evolutionary modeling and robustness analysis of multi-domain cooperative communication network under the environment of Internet of things

Wang

Zhang

Wang

et al. 2022

International Journal of Distributed Sensor Networks

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In the future, the Internet of things will reduce the cell radius and increase the number of low-power nodes to support thousands of times of traffic growth under 5G. As a virtual multiple input multiple output technology, cooperative communication technology can solve these problems effectively. According to the evolution characteristics of cooperative communication networks, a multi-domain cooperative communication network evolution model with preferential attachment and random attachment is constructed in this article. And then, the network properties and robustness are analyzed using the mean-field method and different attacks. Aiming at the resource constraints and resource allocation problems of communication nodes, a relay selection strategy based on the combination of maximum degree and minimum clustering coefficient is proposed. The simulation results show that the relay node selection strategy based on the combination of maximum degree and minimum clustering coefficient has significant advantages in selection steps and selection time, which greatly enhanced the performance of relay selection in multi-domain cooperative communication networks. Through real-time monitoring and updating of the performance and security indicators of the multi-domain cooperative communication networks, it provides a strong guarantee for the node deployment and security management of the Internet of things cooperative communication system.

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“…As discussed in Section 3, if xp sc ¼ z t sc for the received signal r p u in ( 10) is detected at the receiver of User-u, then according to (6), xp u ¼ z k u u , u [1 : n] are also consequently detected. In general, the proposed generalized threshold-based detection algorithm includes two phases: estimation of x p sc and estimation of x p u .…”

Section: Generalized Threshold-based Signal Detectionmentioning

confidence: 99%

“…Two DL-NOMA systems, two users and three users, are considered in Assaf et al 4 Taking into account SIC, the bit error rate of the two-user DL-NOMA systems with quadrature phase shift keying (QPSK) modulation is derived in Assaf et al 4 The bit error performance of the multiuser DL-NOMA system with QPSK and SIC is investigated in Garnier et al 5 In Garnier et al, 5 the theoretical results are further validated by simulation and experimental results. A three-user cooperative NOMA system has been investigated in Fang et al 6 A closed-form expression of the sum rate for the NOMA system is also derived in Fang et al 6 In power-domain NOMA systems, symbols from different users are multiplexed by allocating different transmitted power in superposition coding. However, there exist interferences among different users in the DL-NOMA system.…”

mentioning

confidence: 99%

Fast generalized threshold‐based signal detection for multiuser downlink NOMA systems with arbitrary power allocation

Pillay

2021

Int J Communication

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Summary Non‐orthogonal multiple access (NOMA) is a technique to improve spectral efficiency. Based on the constellation relationship (CR) between the superposition‐coded signal and individual user's signals, in the literature, a simple detection scheme threshold‐based signal detection has been proposed for the two‐user downlink NOMA (DL‐NOMA) system with specific power allocations, not arbitrary power allocation. Furthermore, the average symbol error probability (ASEP) with squared M‐ary quadrature amplitude modulation for two‐user DL‐NOMA systems has also been derived based on this CR. Based on the threshold‐based signal detection for the two‐user DL‐NOMA systems with specific power allocation, in this paper, a generalized threshold‐based signal detection is proposed for all users in the multiuser DL‐NOMA systems with arbitrary power allocation, and then a fast generalized threshold‐based signal detection is further proposed. The generalized ASEP for each individual user in the multiuser DL‐NOMA system is further derived in Rayleigh fading channels. Both theoretical ASEP and simulated symbol error rate results validate the fast generalized threshold‐based signal detection scheme and the generalized ASEP for multiuser DL‐NOMA systems with arbitrary power allocations.

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Three-User Cooperative NOMA Transmission

Cited by 23 publications

References 9 publications

Three-User Cooperative Dual-Stage Non-Orthogonal Multiple Access for Power Line Communications

Three-User Cooperative Dual-Stage Non-Orthogonal Multiple Access for Power Line Communications

Evolutionary modeling and robustness analysis of multi-domain cooperative communication network under the environment of Internet of things

Fast generalized threshold‐based signal detection for multiuser downlink NOMA systems with arbitrary power allocation

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