Rate-Energy Balanced Precoding Design for SWIPT Based Two-Way Relay Systems

Garg, Navneet; Zhang, Junkai; Ratnarajah, Tharmalingam

doi:10.1109/jstsp.2021.3086736

Cited by 7 publications

(3 citation statements)

References 61 publications

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“…In order to proceed our analysis with the calculation of the probability of error in terms of SER, we have to consider the ML criterion from (16). With the appropriate substitutions and calculations, the ML decision rule follows…”

Section: B Rf Combinermentioning

confidence: 99%

“…Same-wise, SWIPT has also been an area of research for attracting interest on multiple antennas. Specifically, in [16] the authors study a two-way relay system with multiple users and a multi-antenna relay employing SWIPT strategy, where splitting the received signal leads to a rate-energy trade-off. In [17], authors investigate SWIPT with a multi-antenna transmitter sending data and energy to single antenna receivers adopting a time switching circuit.…”

Section: Introductionmentioning

confidence: 99%

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A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

Goudeli

Psomas

Krikidis

2023

IEEE Trans. on Green Commun. Netw.

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Smart devices and their applications led to a rapid evolution of the Internet of Things. As a result, there is an emerging need on energizing those low-power devices, while at the same time achieving information transfer. In this context, simultaneous wireless information and power transfer (SWIPT) is considered as an appealing technology, since it can power wirelessly and remotely such devices, simultaneously with information transfer. Motivated by this, we herein propose a system model with an integrated SWIPT receiver, succeeding enhanced performance in terms of information decoding (ID) and energy harvested (EH). Specifically, we adopt a single input multiple output topology, where at the receiver's side we examine two antenna architectures, one based on the direct-current (DC) combining and the other on the radio-frequency (RF) combining. For both schemes, we consider multiple receive antennas and rectifiers, comparing their performances. Furthermore, we adopt a piece-wise linear EH model, which takes into account the sensitivity and saturation effects of the rectifiers. By using a maximum likelihood-based soft decoding, a non-coherent energy detection is achieved. Finally, an asymptotic analysis is conducted, providing upper and lower bounds for ID and EH, respectively. Simulation results along with theoretical analysis, validate the enhanced performance both in terms of ID and EH.

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Section: B Rf Combinermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

Goudeli

Psomas

Krikidis

2023

IEEE Trans. on Green Commun. Netw.

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“…Given κ i,E value, we compute its relation to the chordal distance. Using chordal distance decomposition [29], [30], Vi,E and V i have the relation as…”

Section: B Precoding and Transmitted Signalsmentioning

confidence: 99%

Power Allocation For Full-duplex Two-way Wiretap Channel

Garg

Ratnarajah

2022

2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC)

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In this paper, we consider a two-way wiretap Multi-Input Multi-Output Multi-antenna Eve (MIMOME) channel, where both nodes (Alice and Bob) transmit and receive in an in-band full-duplex (IBFD) manner. For this system with keyless security, we provide a novel artificial noise (AN) based signal design, where the AN is injected in both signal and null spaces. We present an ergodic secrecy rate approximation to derive the power allocation algorithm. We consider scenarios where AN is known and unknown to legitimate users and include imperfect channel information effects. To maximize secrecy rates subject to the transmit power constraint, a two-step power allocation solution is proposed, where the first step is known at Eve, and the second step helps to improve the secrecy further. We also consider scenarios where partial information is known by Eve and the effects of non-ideal self-interference cancellation. The usefulness and limitations of the resulting power allocation solution are analyzed and verified via simulations. Results show that secrecy rates are less when AN is unknown to receivers or Eve has more information about legitimate users. Since the ergodic approximation only considers Eve's distance, the resulting power allocation provides secrecy rates close to the actual ones.

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Energy-balanced path optimization of UAV-assisted wireless power and information system

Guo

Yang

et al. 2022

Wireless Netw

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Rate-Energy Balanced Precoding Design for SWIPT Based Two-Way Relay Systems

Cited by 7 publications

References 61 publications

A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

A Detection Scheme for Integrated SWIPT Receivers With Rectenna Arrays

Power Allocation For Full-duplex Two-way Wiretap Channel

Energy-balanced path optimization of UAV-assisted wireless power and information system

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