Joint Time Allocation and Power Splitting Schemes for Amplify-and-forward Relaying Network over Log-normal Fading Channel

Shen, Jianmei; Liu, Yingting; Yang, Hongwu; Yan, Chunman

doi:10.1109/wcsp.2018.8555892

Cited by 3 publications

(9 citation statements)

References 13 publications

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“…Even if there are multiple UAVs in the scenario, only one UAV with the best channel conditions participates in the relay transmission and can utilize the fixed power in different periods of the whole motion, while other UAVs are not working. According to the locations of 3 or 2 hovering UAV relays, we adopt (14,20,24) and (17,24) as time-splitting points of 3-UAV scheme and 2-UAV scheme. In detail, during 0 -14s, 14 -20s and 20 -24s, 3 UAV relays work in turn.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…where β and θ 1 are defined in (14) and (15) respectively. Based on (17), SER of this scheme with BPSK modulation can be finally obtained as:…”

Section: B Calculation Of Snr and Sermentioning

confidence: 99%

“…Based on these cooperative relaying protocols, performance of traditional stationary relay system including bit error ratio (BER) and outage probability have been well evaluated in [4] - [14], moreover, power allocation strategies have also been proposed. However, all these schemes have their shortages.…”

Section: Introduction a Motivation And Related Workmentioning

confidence: 99%

“…[13] combines relay system with energy harvesting, two antennas are used at the source, but only one antenna with the best performance is chosen for transmission and this scheme has not considered the highspeed movement of the source. As shown in [14], energy harvesting is performed at the relay first, then time splitting ratio (TSR) and power splitting ratio (PSR) strategies are adopted in multi-antenna-based AF system respectively, but the mathematical relationship between PSR and the end-toend distance as well as the trajectory of the source is not emphasized. Although multiple antennas are adopted, the above papers are mainly based on stationary relays and sources, so their power allocation schemes are not strongly related to real-time channel conditions, causing limited flexibility.…”

Section: Introduction a Motivation And Related Workmentioning

confidence: 99%

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UAV-Assisted Relaying Transmission Design and Optimization for High-Speed Moving Sources

2020

IEEE Access

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In state of the art relay-assisted transmission schemes, analysis of symbol error ratio (SER) and throughput mainly focuses on static or low-speed sources, where relay strategies and power allocation strategies are studied. However, when the sources move quickly with variable trajectories, the power allocation strategy of relays is affected by the sources' movement and time-varying channels, and should be adjusted dynamically according to the sources' trajectories with corresponding motion scenarios. Therefore, previous schemes are no longer applicable to solve the problem brought by high-speed sources because their channels and power allocation strategies are lack of correlation with the sources' movement. In this paper, taking full advantage of the flexibility of unmanned aerial vehicle (UAV) combined with multi-antenna technology, we propose two UAV-assisted relaying transmission schemes to serve high-speed moving sources. Through derivation and optimization of system's symbol error ratio (SER), new dynamic power allocation and adjustment strategies of the source and each UAV are obtained when the total power of the system is limited. Moreover, the proposed schemes utilize time-based power allocation lists to save signaling overhead. Simulation results demonstrate that our schemes outperform the compared schemes. INDEX TERMS moving sources, UAV relays, dynamic power allocation.

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Section: Simulation Resultsmentioning

confidence: 99%

“…where β and θ 1 are defined in (14) and (15) respectively. Based on (17), SER of this scheme with BPSK modulation can be finally obtained as:…”

Section: B Calculation Of Snr and Sermentioning

confidence: 99%

Section: Introduction a Motivation And Related Workmentioning

confidence: 99%

Section: Introduction a Motivation And Related Workmentioning

confidence: 99%

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UAV-Assisted Relaying Transmission Design and Optimization for High-Speed Moving Sources

2020

IEEE Access

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“…Moreover, for lower SINR value TS protocol provide higher throughput than PS protocol. From [25][26][27][28][29], authors have used both TS and PS protocol to develop hybrid model in sensor network and show that hybrid protocol outperforms the TS or PS enabled SWIPT protocol in terms of data rate (throughput), energy harvesting and energy efficiency. However, in the above literatures sensor node has used only the source node's RF signal for energy harvesting and it left out neighbors' (unintended transmitters) RF signals, which is a valid source of energy and has a notable impact on energy efficiency of the system.…”

Section: Introductionmentioning

confidence: 99%

Green computing in IoT: Time slotted simultaneous wireless information and power transfer

Jaiswal

Kumar

Kaiwartya

et al. 2021

Computer Communications

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Secrecy Performance by Power Splitting in Cooperative Dual-Hop Relay Wireless Energy Harvesting

Sehito

Yang

Alharbi

et al. 2022

Wireless Communications and Mobile Computing

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In wireless communication systems, for secure communication between a transmitter and receiver over the communication channel, the physical layer security is widely utilized. The paper presents a dual-hop wireless full-duplex relay (FDR) network with a source relay and destination relay between two nodes and listening devices. The relay and source use energy harvesting to gain energy from power beacon. Two cooperative techniques are utilized to investigate the amplify-forward (AF) and decode-forward (DF) secrecy capacity in the energy harvesting power splitting system. It is shown that the secrecy performance of an AF relay is better than the secrecy performance of a DF relay in the given form. At 40-meter distance between the relay and the eavesdropper in an energy harvesting system, the AF relay outperforms the DF relay. The simulation is performed using the Monte-Carlo method in MATLAB.

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Joint Time Allocation and Power Splitting Schemes for Amplify-and-forward Relaying Network over Log-normal Fading Channel

Cited by 3 publications

References 13 publications

UAV-Assisted Relaying Transmission Design and Optimization for High-Speed Moving Sources

UAV-Assisted Relaying Transmission Design and Optimization for High-Speed Moving Sources

Green computing in IoT: Time slotted simultaneous wireless information and power transfer

Secrecy Performance by Power Splitting in Cooperative Dual-Hop Relay Wireless Energy Harvesting

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