Outage Constrained Robust Secrecy Energy Efficiency Maximization for EH Cognitive Radio Networks

Ni, Lei; Da, Xinyu; Hu, Hang; Zhang, Miao; Cumanan, Kanapathippillai

doi:10.1109/lwc.2019.2955121

Cited by 26 publications

(27 citation statements)

References 21 publications

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“…In [44], authors optimize spectral efficiency and energy efficiency in MIMO system for secure transmission. In [45] and [46], it is optimized in secure cognitive radio networks, while in MIMO-NOMA Systems in [47]. [48] studies energy efficiency in a MISO downlink transmission system.…”

Section: A Motivation and Related Workmentioning

confidence: 99%

Joint TS Beamforming and Hybrid TS-PS Receiving Design for SWIPT Systems

Wang

2021

IEEE Access

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Simultaneously wireless information and power transfer technology enables information and energy to be transmitted over the same radio frequency (RF) signal. We investigate a multiple input simple output (MISO) system where the multiple-antenna base station not only transmits information to singleantenna users, but also supplies all power they need. The same beamforming at base station under two modes of energy transfer and information transmission causes the problem of low system energy efficiency. To solve this, we put forward a novel transmission scheme where beamforming is divided by time switching (TS) into two parts, energy beamforming and information beamforming, and users receive by hybrid time switching and power splitting (hybrid TS-PS) correspondingly. Under constraints of information and energy, we aim to achieve the maximal energy efficiency by jointly optimize power splitting, time allocation, beamforming for energy transfer and information transmission phase respectively. In the solving process, we transfer the maximal energy efficiency problem into the minimal energy consumption problem, analyze the feasibility, then prove the existing of optimal solution. Furthermore, we put forward a semidefinite relaxation (SDR) based algorithm to solve the problem optimally and two sub-optimal designs to simplify computing complexity. Simulation results illustrate that our proposed design can achieve the optimal energy efficiency and prove the asymptotic optimality of two sub-optimal solutions. INDEX TERMS Beamforming, energy efficiency, power splitting, SWIPT, time switching.

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Section: A Motivation and Related Workmentioning

confidence: 99%

Joint TS Beamforming and Hybrid TS-PS Receiving Design for SWIPT Systems

Wang

2021

IEEE Access

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“…, and λ E, k are slack variables. It is noticed that although (6) itself is non-convex, for any feasible β, its inner optimisation (7) is equivalent to SDP (12). Encouragingly, with a given β, (12) is easily tackled through CVX software.…”

Section: Determining the Optimal An-aided Robust Beamforming Via A Sementioning

confidence: 99%

“…Encouragingly, with a given β, (12) is easily tackled through CVX software. Therefore, by performing linear search over β, we can solve (6) via a series of SDPs (12).…”

Section: Determining the Optimal An-aided Robust Beamforming Via A Sementioning

confidence: 99%

“…Besides, step c holds due to Tr W ≤ P. Without loss of generality, we let W ⋆ , Q z ⋆ represent the optimal joint design of (4). Suppose that we derive β ⋆ , W ′ , Q z ′ after onedimensional search over β and solving (6) via a series of SDPs such as (12). As indicated in Lemma 1, we cannot guarantee that rank(W ′ ) = 1 must hold.…”

Section: Determining the Optimal An-aided Robust Beamforming Via A Sementioning

confidence: 99%

“…In this context, many multi-antenna related physical-layer security works have been developed to investigate secure transmission schemes (e.g, [3][4][5][6]). Additionally, these multi-antenna secure transmission schemes have been fully investigated over the various wireless communications systems, including conventional cellular systems [7], wireless powered heterogeneous network [8,9], hybrid satellite-terrestrial relay network [10], device-to-device underlaid cellular network [11], energy harvesting cognitive radio network [12] etc. Generally speaking, most of the multi-antenna secure transmission schemes fall into two broad categories: transmit beamforming [12][13][14][15][16][17] and joint optimisation of beamforming and artificial noise (AN) [9,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

AN‐aided probabilistic robust and secure beamforming with imperfect LCSI and statistical ECSI

2020

IET Communications

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Outage and throughput performance analysis of smart UAV‐assisted full‐duplex NOMA‐based energy harvesting cognitive radio networks

Kumar Bag,

Samanta,

Kumar De

et al. 2023

Int J Communication

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SummaryIn this paper, the throughput and outage performance for an unmanned aerial vehicle (UAV)‐assisted non‐orthogonal multiple access (NOMA)‐based hybrid cognitive radio (CR) network are examined under m‐Nakagami fading channel. To be more specific, a secondary source transmitter () broadcasts a NOMA‐enabled mixed signal to secondary destinations via UAV relay, which operates in full‐duplex (FD) mode and employs decode‐and‐forward protocol. In our approach, an energy harvesting (EH) circuit is employed at both and UAV to harvest energy from the PU radio frequency (RF) signals. These secondary transmitters are also incorporated with energy detector (ED) circuit as well, which detects the activity of the primary user (PU). The status of PU to be busy or idle is confirmed on the basis of the energy detector's results. In turn, this drives and UAV to switch between underlay and overlay protocols in an adaptive manner to increase spectrum efficiency (SE). The closed form mathematical expressions of the secondary outage probability for NOMA‐based UAV equipped CR networks under imperfect successive interference cancellation (i‐SIC) conditions have been evaluated. The administration of the power allocation policy at the and UAV is assessed while maintaining the PU quality of service (QoS). Finally, MATLAB simulation testbed has been used to verify all the analytical closed form expressions.

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Outage Constrained Robust Secrecy Energy Efficiency Maximization for EH Cognitive Radio Networks

Cited by 26 publications

References 21 publications

Joint TS Beamforming and Hybrid TS-PS Receiving Design for SWIPT Systems

Joint TS Beamforming and Hybrid TS-PS Receiving Design for SWIPT Systems

AN‐aided probabilistic robust and secure beamforming with imperfect LCSI and statistical ECSI

Outage and throughput performance analysis of smart UAV‐assisted full‐duplex NOMA‐based energy harvesting cognitive radio networks

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