Buffer-aided relaying for the two-hop full-duplex relay channel with self-interference

Razlighi, Mohsen Mohammadkhani; Zlatanov, Nikola

doi:10.1109/twc.2017.2767582

Cited by 52 publications

(12 citation statements)

References 36 publications

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“…This article uses EH technology in [8][9][10][11][12], assuming that the energy at the D2D transmitter is derived entirely from the energy harvesting process. The energy harvesting source can be solar or radio frequency energy.…”

Section: B Queue Model and Assumptionmentioning

confidence: 99%

“…For both delay-constrained and delay-unconstrained transmission, an optimal power allocation and link selection policy was proposed. [9] investigated the fading two-hop full-duplex (FD) relay channel with self-interference. Three buffer-aided relaying schemes with adaptive reception-transmission at the FD relay were proposed, which enabled the FD relay to adaptively select to either receive, transmit, or simultaneously receive and transmit efficiently.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Buffer-Aided Energy Harvesting Device-to-Device Communications With Complex Boundary Behavior

et al. 2020

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In this paper, we investigate the performance analysis of the buffer-aided energy harvesting device-to-device (D2D) communication system. A joint data and energy resource scheduling problem is proposed considering the data packet and energy packet Poisson arrival but interactive departure. Considering the coupling relationship between data and energy, the joint resource scheduling problem is modeled as a data and energy coupled queuing model. We raise the expressions of carrier-to-interference and noise-ratio (CINR) interval division, which contains the dynamic interferences from cellular users and the other D2D users. To compromise between data delay and energy consumption, we propose a novel adaptive power transfer (APT) strategy that allows more energy consumption to improve data delay. Studying user mobility and APT strategies will lead to complex boundary behavior of the system transition state matrix. By random geometry theory and quasi-birth and death method to obtain steady-state transition probability, the expressions of throughput, delay and packet drop rate for both data queue and energy queue are derived. Simulations are demonstrated to verify the accuracy of the theoretical derivation results.

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Section: B Queue Model and Assumptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Buffer-Aided Energy Harvesting Device-to-Device Communications With Complex Boundary Behavior

et al. 2020

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“…Thus, the latency of the HD relay system is twice, as much as possible, that of direct transmissions with no relay and no retransmission during data transmission completion. In order to reduce the latency, a full-duplex (FD) relay, equipped with transmit antennas and receive antennas, has been widely studied in the literature, to enable simultaneous transmission and reception in the same frequency band, with theoretically doubled throughput [3]. The source and relay can successively transmit data in consecutive time slots.…”

Section: Introductionmentioning

confidence: 99%

Toward URLLC: A Full Duplex Relay System with Self-Interference Utilization or Cancellation

Jiang

Duan

Zhu

et al. 2021

IEEE Wireless Commun.

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Ultra-reliable and low-latency communication (URLLC) is one of the key use cases of the fifth generation (5G) wireless communications to facilitate specific application scenarios with stringent latency and reliability demands, such as industrial automation and Tactile Internet. A full-duplex (FD) relay with simultaneous transmission and reception in the same frequency band is an effective approach to enhance the reliability of cell-edge user terminals, by significantly suppressing self-interference (SI). However, the signal processing latency at FD relay due to SI cancellation, referred to as relaying latency, takes a significant part in the end-to-end latency, and therefore should be minimized, while guaranteeing high reliability. In this article, we first present an up-to-date overview of the end-to-end latency for an FD relay system, addressed on physical layer challenges. We investigate the possible solutions in the literature to achieve the goal of URLLC. The efficient solution is to allow a simple amplify-and-forward (AF) FD relay mode with low-complexity SI radio frequency and analog cancellations, and process the residual SI alongside the desired signal at base station in an adaptive manner, rather than being cancelled at relay in digital domain. Also, the residual SI can be utilized at base station to enhance the reliability and the degree of freedom in signal processing, not necessarily being cancelled as much as possible. The FD relay assisted system with adaptive SI utilization or cancellation enables extended network coverage, enhanced reliability and reduced latency, compared to the existing overview work.

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“…The optimization techniques designed for memoryless relaying nodes cannot be applied for BAR transmission. Thus, the problem of power allocation and link selection for the BAR has received significant attention in the research community [10][11][12][13][14][15][16][17][18][19][20]. Considering a full-duplex network, power allocation at the source and relay node was studied in [10].…”

mentioning

confidence: 99%

“…Under the total transmit power constraint at each node, this work presented a link selection and a power allocation strategy.The problem of cross-layer resource allocation considering asymmetric time duration over two hops was investigated in [13]. The work in [14] proposed different BAR schemes under full-duplex (FD) relay transmission with self-interference cancellation (SIC) capability at the relaying node. The results showed the considerable gains of the proposed scheme over the conventional FD relay transmission.…”

mentioning

confidence: 99%

Joint Power Allocation and Link Selection for Multi-Carrier Buffer Aided Relay Network

et al. 2019

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In this paper, we present a joint power allocation and adaptive link selection protocol for an orthogonal frequency division multiplexing (OFDM)-based network consists of one source node i.e., base station (BS), one destination node i.e., (MU) and a buffer aided decode and forward (DF) relay node. Our objective is to maximize the average throughput of the system via power loading over different subcarriers at source and relay nodes. A separate power budget is assumed at each transmitting node to make the system more practical. In order to form our solution more tractable, a decomposition framework is implemented to solve the mixed integer optimization problem. Further, less complex suboptimal approaches have also been presented and simulation results are provided to endorse the efficiency of our designed algorithms.Buffer aided relaying (BAR) emerged as a new paradigm for the wireless communication systems and has provided freedom to the link selection, i.e., the choice to choose a particular hop for transmission in a given time slot [9]. With this addition, the resource allocation problem becomes more challenging and is coupled with the link selection. The optimization techniques designed for memoryless relaying nodes cannot be applied for BAR transmission. Thus, the problem of power allocation and link selection for the BAR has received significant attention in the research community [10][11][12][13][14][15][16][17][18][19][20]. Considering a full-duplex network, power allocation at the source and relay node was studied in [10]. Authors maximized the source arrival rate under the assumption of imperfect self-interference cancellation and statistical delay constraints. For the underlay cognitive radio network with buffer aided DF relay, an adaptive link selection scheme was presented in [11]. A closed-form expression for the data rate was derived by assuming peak power and interference constraints at the secondary nodes. The authors in [12] considered a system where multiple source nodes are communicating with a single destination through a common BAR. Under the total transmit power constraint at each node, this work presented a link selection and a power allocation strategy.The problem of cross-layer resource allocation considering asymmetric time duration over two hops was investigated in [13]. The work in [14] proposed different BAR schemes under full-duplex (FD) relay transmission with self-interference cancellation (SIC) capability at the relaying node. The results showed the considerable gains of the proposed scheme over the conventional FD relay transmission. Further, the authors in [15] studied the security and the delay issues in the buffer enhanced dual-hop transmission. The relay selection schemes for links with equal weights have recently been explored in [16]. Depending on the status of the buffer at each relaying node, the authors in [17] proposed a max-link selection analysis framework. With the Markov chain approach, analytical expressions for the outage probability, the average bit error rate, a...

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Buffer-aided relaying for the two-hop full-duplex relay channel with self-interference

Cited by 52 publications

References 36 publications

Analysis of Buffer-Aided Energy Harvesting Device-to-Device Communications With Complex Boundary Behavior

Analysis of Buffer-Aided Energy Harvesting Device-to-Device Communications With Complex Boundary Behavior

Toward URLLC: A Full Duplex Relay System with Self-Interference Utilization or Cancellation

Joint Power Allocation and Link Selection for Multi-Carrier Buffer Aided Relay Network

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