Exploiting hybrid time switching-based and power splitting-based relaying protocol in wireless powered communication networks with outdated channel state information

Nguyen, Hoang-Sy; Do, Dinh‐Thuan; Nguyen, Thanh-Sang; Vozňák, Miroslav

doi:10.1080/00051144.2017.1372124

Cited by 26 publications

(16 citation statements)

References 22 publications

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“…wave, solar, wind, etc.) can be collected to transform into electricity [1][2][3][4][5][6][7]. In particular, the authors in [8] proposed two relaying protocols so-called time switching-based relaying (TSR) protocol and power splittingbased relaying (PSR) protocol to enable EH and information processing at the relay node.…”

Section: Introductionmentioning

confidence: 99%

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Nguyen

Vozňák

2017

Automatika

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Because of the short battery life of user equipments (UEs), and the requirements for better quality of service have been more demanding, energy efficiency (EE) has emerged to be important in device-to-device (D2D) communications. In this paper, we consider a scenario, in which D2D UEs in a half-duplex decode-and-forward cognitive D2D communication underlying a traditional cellular network harvest energy and communicate with each other by using the spectrum allocated by the base station (BS). In order to develop a practical design, we achieve the optimal time switching (TS) ratio for energy harvesting. Besides that, we derive closedform expressions for outage probability, sum-bit error rate, average EE and instantaneous rate by considering the scenario when installing the BS near UEs or far from the UEs. Two communication types are enabled by TS-based protocol. Our numerical and simulation results prove that the data rate of the D2D communication can be significantly enhanced.

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Section: Introductionmentioning

confidence: 99%

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Nguyen

Vozňák

2017

Automatika

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“…Fig. 1 demonstrates a relay-aided CR-NOMA network having a primary source P S and several intermediate relays {R k |k = 1, 2, ..., K} employing relaying protocols [31], [32], [33], i.e. DF scheme.…”

Section: System Model Figurementioning

confidence: 99%

Performance Evaluation of Relay-Aided CR-NOMA for Beyond 5G Communications

Nguyen

Jameel

et al. 2020

IEEE Access

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Non-orthogonal multiple access (NOMA) is considered as one of the most promising technologies to handle the issue of spectrum scarcity in beyond fifth-generation (5G) networks. Integrating NOMA in cognitive radio (CR) network is expected to usher a new era of reliable, seamless, and massive connectivity. In this regard, this work explores the relay selection problem in CR networks when operating in the spectrum sharing model. Specifically, the secondary users (SUs) in the CR-NOMA network opportunistically access the licensed spectrum resources to boost the number of accessible SUs sharing the limited and dynamic spectrum resources. Moreover, to improve the performance of far users, partial relay selection architecture is exploited at full-duplex (FD) and half duplex (HD) relays for both uplink and downlink communications. For in-depth performance evaluation, we provide closed-form expressions of the outage probabilities of the users in FD and HD relay-aided CR-NOMA networks. In addition to this, the analytical expressions of asymptotic outage probabilities and ergodic capacity are also provided which unveils the critical factors affecting the performance of CR-NOMA networks. To validate the derived expressions, extensive simulations are performed that demonstrate the accuracy of analytical expressions for FD and HD relay-aided CR-NOMA networks. INDEX TERMS Cognitive radio network, full-duplex, relay selection, Non-orthogonal multiple access (NOMA).

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“…To overcome the problem of less performance, a new technique namely repeated relay selection is proposed that is based on updated CSI. It is shown that the throughput of updated CSI is much better as compared to outdated CSI .…”

Section: Relay Selection Techniquesmentioning

confidence: 99%

Cooperative communications using relay nodes for next‐generation wireless networks with optimal selection techniques: A review

Asshad

Khan

Kavak

et al. 2019

IEEJ Transactions Elec Engng

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In the next-generation wireless networks, cooperative communication is one of the auspicious techniques through which spatial diversity could be achieved by permitting the single antenna to act as virtual multiple input multiple output (VMIMO). The fundamental principle of cooperative communication was established on different types of relaying protocols and implementation of different relaying protocols according to the requirements of communication scenarios. The challenging task for achieving a high performance in cooperative communication is to find out the optimal relay node (RN) among different prevailing RNs. The basic purpose of cooperative communication is to maximize the performance of the network and minimize the overhead triggered by RNs by considering different communication metrics, i.e., signal to noise ratio (SNR), channel state information (CSI), and bit error rate (BER). This study presents a review of different cooperative relaying protocols with best relay selection techniques in the next-generation wireless network. Moreover, the different challenges faced by millimeter wave in 5G wireless networks and the role of cooperative communication to overcome those challenges are discussed. Turkey is that it transmits the duplicates of a signal to the destination independently. Many ideas regarding cooperative communication were first derived by Nichola et al. [5]. In the next-generation wireless network, cooperative communication may be one of the promising approaches for achieving the high data rates as well as efficient utilization of the bandwidth. Cooperative communication uses a RN, to provide coverage in the holes within the Long-Term Evolution-Advanced (LTE-A) cellular networks [6]. Similarly, in mm-wave communication that is considered in 5G, the relaying techniques are used to overcome different challenges of link blockage, backhaul connectivity, and path loss etc. Moreover, to make this technology more efficient and reliable, further improvements are required to achieve these goals.This study presents a broad overview of different relaying protocols with optimal relay selection methods used in different wireless networks. In addition, this study presents the potential benefits of using cooperative communication to overcome different challenges faced by the next generation of wireless networks. The remainder of this article is organized as follows. Section 2 presents existing research on cooperative communication. Section 3 gives an overview of cooperative communication, in which different relaying protocols are presented and comparison between them. In Section 4, we discuss the review of optimal relay selection techniques. In Section 5, we explain the different challenges faced by mm-wave and how to overcome them by cooperative communication. Section 6 summarizes the future challenges in cooperative communication and finally the conclusion is given in Section 7. Sami et al. [7] demonstrate a survey and taxonomy on medium access control for cooperative communication. This study classifies ...

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Exploiting hybrid time switching-based and power splitting-based relaying protocol in wireless powered communication networks with outdated channel state information

Cited by 26 publications

References 22 publications

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Wireless powered D2D communications underlying cellular networks: design and performance of the extended coverage

Performance Evaluation of Relay-Aided CR-NOMA for Beyond 5G Communications

Cooperative communications using relay nodes for next‐generation wireless networks with optimal selection techniques: A review

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