Outage Performance for NOMA-Based FSO-RF Systems With a Dual Energy Harvesting Mode

Zhang, Jiliang; Zhang, Li; Pan, Gaofeng

doi:10.1109/jiot.2023.3267136

Cited by 8 publications

(1 citation statement)

References 43 publications

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“…A summary of recent works on NOMA systems is provided in Table 1. VLC Analytical method and power allocation method for better maximum sum-rate than fixed power allocation (FPA) and GRPA [52] VLC KKT optimality conditions to attain higher system sum-rate than FPA and NGDPA [53] Hybrid OMA and NOMA VLC Dynamic programming-based layer-recursion model for better achievability throughput than traditional NOMA and TDMA [54] RF communication Distance-dependent power allocation (DDPA) technique for mMIMO-aided NOMA [55] RF communication Energy-efficient power allocation for multiple-user MIMO-NOMA [56] RF communication Power allocation to ensure QoS requirements in NOMA systems [57] RF communication Power allocation to ensure individual QoS requirements in downlink NOMA systems [58] RF communication Binary continuous phase modulation (CPM) with modulation is considered into downlink symbol-asynchronous non-orthogonal multiple access (ANOMA) to improve spectral and power efficiency [59] Hybrid RF/FSO Superior performance of FSO backhauling for high-reliability and high-throughput NOMA systems compared to RF backhauling [60] Hybrid RF/FSO Superior outage performance for an FSO-RF system with NOMA under a dual energy harvesting (EH) mode compared to single EH mode [61] Hybrid RF/VLC Link selection and user pairing in cooperative-NOMA [62] Hybrid RF/VLC Outage performance and reliability improvement of cooperative-NOMA…”

Section: Introductionmentioning

confidence: 99%

Uplink and Downlink NOMA Based on a Novel Interference Coefficient Estimation Strategy for Next-Generation Optical Wireless Networks

Mohsan

Zhang

et al. 2023

Photonics

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Non-orthogonal multiple access (NOMA) has been widely recognized as a promising technology to improve the transmission capacity of wireless optical communication systems. NOMA considers the principle of successive interference cancellation (SIC) to separate a user’s signal at the receiver side. To improve the ability of optical signal detection, we developed a quantum dot (QD) fluorescent concentrator incorporated with multiple-input and single-output (MISO) to realize an uplink NOMA-based optical wireless system. However, inaccurate interference assessment of multiple users using the SIC detection algorithm at the receiver side may lead to more prominent error propagation problems and affect the bit error rate (BER) performance of the system. This research aims to propose a novel recurrent neural network-based guided frequency interference coefficient estimation algorithm in a NOMA visible light communication (VLC) system. This algorithm can improve the accuracy of interference estimation compared with the traditional SIC detection algorithm by introducing interference coefficients. It provides a more accurate reconstruction possibility for level-by-level interference cancellation and weakens the influence of error propagation. In addition, we designed uplink and downlink NOMA-VLC communication systems for experimental validation. When the power allocation ratio was in the range of 0.8 to 0.97, the experimental results of the downlink validated that the BER performance of both users satisfied the forward error correction (FEC) limit with the least squares (LS)-SIC and the long short-term memory recurrent neural networks (LSTM)-SIC detection strategy. Moreover, the BER performance of the LSTM-SIC algorithm was better than that of the LS-SIC algorithm for all users when the power allocation ratio was in the range of 0.92 to 0.93. In particular, our proposed system offered a large detection area of 2 cm2 and corresponding aggregate data rate up to 40 Mbps over 1.5 m of free space by using QDs, and we successfully achieved a mean bit error rate (BER) of 2.3 × 10−3 for the two users.

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Section: Introductionmentioning

confidence: 99%

Uplink and Downlink NOMA Based on a Novel Interference Coefficient Estimation Strategy for Next-Generation Optical Wireless Networks

Mohsan

Zhang

et al. 2023

Photonics

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Performance evaluation of NOMA networks powered by harvested energy with antenna selection under $$\kappa -\mu $$ shadowed fading

Ho-Van

2024

Telecommun Syst

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Improving the Security and Reliability of Energy-Constrained Two-Way Relay Systems With Nonlinear Energy Harvesting

Li,

Wang,

Liang

et al. 2023

IEEE Access

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This paper presents a novel three-time slot transmission protocol designed for energyconstrained two-way relay systems. In a departure from traditional energy sources, our approach serves a dual purpose by not only providing power to the system but also significantly enhancing its security. We leverage both Physical-layer network coding (PNC) and bit-level Exclusive OR (XOR) technology to amplify system capacity and bolster security. Given the unavailability of exact closed-form solutions, we utilize tight upper bounds for the signal-to-noise ratio (SNR) to derive approximate closed-form results, specifically focusing on outage and intercept performance under Rayleigh channel conditions. We also provide performance bounds for outage and intercept probabilities in the high SNR regime. Our simulation results validate the accuracy of our derived probabilities, demonstrating consistency with Monte Carlo simulations. Furthermore, our investigation reveals that the time allocation factor has minimal impact on the security and reliability of the proposed protocol, particularly under high SNR conditions. In addition, we conduct a comparative analysis between the XOR scheme introduced in this article and non-XOR (NXOR) systems. This analysis underscores the superior security-reliability tradeoff of our approach, particularly in scenarios characterized by poor channel conditions between the energy source user and potential eavesdroppers.INDEX TERMS two-way relay, energy harvesting, physical-layer network coding, cooperative communications, Rayleigh channel.

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Outage Performance for NOMA-Based FSO-RF Systems With a Dual Energy Harvesting Mode

Cited by 8 publications

References 43 publications

Uplink and Downlink NOMA Based on a Novel Interference Coefficient Estimation Strategy for Next-Generation Optical Wireless Networks

Uplink and Downlink NOMA Based on a Novel Interference Coefficient Estimation Strategy for Next-Generation Optical Wireless Networks

Performance evaluation of NOMA networks powered by harvested energy with antenna selection under $$\kappa -\mu $$ shadowed fading

Improving the Security and Reliability of Energy-Constrained Two-Way Relay Systems With Nonlinear Energy Harvesting

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