Optimal power allocation and throughput performance of full-duplex DF relaying networks with wireless power transfer-aware channel

Nguyen, Xuan-Xinh; Do, Dinh‐Thuan

doi:10.1186/s13638-017-0936-x

Cited by 44 publications

(40 citation statements)

References 32 publications

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“…The paper [32] provides a survey on radio resource management solutions, including link adaptation on orthogonal frequency-division multiple access (OFDMA)-based networks with DF relaying. In [33,34], optimal power allocation schemes are designed for DF relay network with continues power and rate adaptation. Throughput optimization of DF relay with discrete rate adaptation is addressed in [35][36][37].…”

Section: Relay Network and Utilizing Link Adaptationmentioning

confidence: 99%

Delay constrained throughput optimization in multi-hop AF relay networks, using limited quantized CSI

Taki

Svensson

Nezafati

2019

J Wireless Com Network

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In this paper, we analyze the throughput of multi-hop amplify and forward (AF) relay networks in delay-constrained scenario. Using quantized channel state information (CSI), the transmission rates and powers are discretely adapted with individual average power constraint on each node. A sub-gradient projection-based algorithm is utilized, by which there is no need for probability density functions (PDFs) to solve the optimization problem. Our numerical evaluations show that the sub-gradient projection-based algorithm results in a comparable performance with an analytical approach using PDFs. As shown, a considerably better performance obtained by the designed scheme compared to previous schemes with constant power transmission. More than 70% throughput improvement is achieved by our scheme compared to constant power transmission with just two more feedback bits and a short training time required at the beginning of the transmission.

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Section: Relay Network and Utilizing Link Adaptationmentioning

confidence: 99%

Delay constrained throughput optimization in multi-hop AF relay networks, using limited quantized CSI

Taki

Svensson

Nezafati

2019

J Wireless Com Network

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“…Following the principle of energy harvesting [14][15][16][17][18][19], the harvested power is given by…”

Section: A First Phase: Energy Harvestingmentioning

confidence: 99%

“…In this section, the outage probability is main metric considered in our proposed model. The outage performance is defined in many works [14][15][16][17]. We now consider outage probability for such NOMA transmission as below.…”

Section: Outage Performance Analysis In Scheme Imentioning

confidence: 99%

Outage Performance Analysis of Cell-Center/Edge Users Under Two Policies of Energy Harvesting

Do¹,

Le²,

Le³

et al. 2019

ELEKTRON ELEKTROTECH

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In this paper, two energy harvesting policies deploying in cooperative non-orthogonal multiple access (NOMA) systems are considered. After period of wireless power transfer, the NOMA users including cell-edge and cell-center users simultaneously transmit the superposition coded symbols to the base station (BS). In the last time slot, the BS decodes to achieve its signal based on superposition coded symbol with corresponding power allocation factors. This paper provides exact expressions of outage probability in two schemes. Performance gap of two NOMA users can be raised by providing different power allocation factors. It is confirmed by numerical result. Distance and data rate are main factors affecting outage performance. Scheme I exhibit scenario where power beacon transmits energy signal to NOMA user while the BS feeds energy to NOMA user in Scheme II. It is shown that outage performance of Scheme I is better than that of Scheme II.

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“…In EH technique, solar and wind are considered as popular energy resources that are intermittent under impacts the environmental alteration. More specifically, radio frequency (RF) signal is considered as a new viable source, which can be applied in wireless power transfer (WPT) . Nevertheless, regarding traditional relay nodes using batteries to power and hence such mobile devices meet limited performance due to the short battery lifespan.…”

Section: Introductionmentioning

confidence: 99%

Impact of fixed power allocation in wireless energy harvesting NOMA networks

2019

Int J Communication

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The time switching-based relaying (TSR) scheme is considered in energy harvesting protocol to implement with its advantage to nonorthogonal multiple access (NOMA) system. In particular, decode-and-forward (DF) mode is proposed to employ in relay to forward signal to serve two far NOMA users. There are two main metrics including outage probability and ergodic rate, which are derived in exact expressions with respect to varying performance under impacts of energy harvesting fractions. To evaluate system performance, outage event and related capacity are illustrated, and we tailor performance gap among two NOMA users and such gap can be controlled by selecting of appropriate power allocation factors assigned for each user to obtain optimal performance. By examining node arrangement, target rates and varying transmit signal to noise ratio (SNR), it can be further achieved performance in several situations of such NOMA. As important result, the considered NOMA system outperforms than the conventional multiple access scheme, and this expected result is confirmed in numerical result and theoretical results. We also explore impacts of transmit power at source, noise power, the other key parameters of energy harvesting scheme to exhibit outage, and ergodic performance. Simulation results are presented to corroborate the proposed methodology. KEYWORDS decode and forward, energy harvesting, non-orthogonal multiple access, outage probability Int J Commun Syst. 2019;32:e4016.wileyonlinelibrary.com/journal/dac

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Optimal power allocation and throughput performance of full-duplex DF relaying networks with wireless power transfer-aware channel

Cited by 44 publications

References 32 publications

Delay constrained throughput optimization in multi-hop AF relay networks, using limited quantized CSI

Delay constrained throughput optimization in multi-hop AF relay networks, using limited quantized CSI

Outage Performance Analysis of Cell-Center/Edge Users Under Two Policies of Energy Harvesting

Impact of fixed power allocation in wireless energy harvesting NOMA networks

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