Outage analysis of OFDM based cognitive radio network with full duplex relay selection

Rajkumar, Samikkannu; Thiruvengadam, Jayaraman S.

doi:10.1049/iet-spr.2016.0100

Cited by 16 publications

(6 citation statements)

References 20 publications

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“…Recently, the performance analysis and optimization of dual-hop CogFDR network has been carried out extensively by many researchers [20][21][22][23][24][25][26][27][28][29]. In [20], the authors have presented an analytical model to evaluate the outage probability of secondary user in dual-hop CogFDR network by considering a joint decoding scheme at the SR in which the signals arriving at the SR from ST and the relay are utilized together for the decoding purpose.…”

Section: Related Workmentioning

confidence: 99%

“…In [27], the authors have proposed an analytical model for evaluating the outage probability of a dual-hop CogFDR network by considering various locations for the relay node, while neglecting the impact of direct transmission link from ST to SR. In [28], the authors have derived a closed form expression for the outage probability of an OFDM-based CRN with relay selection considering a dual-hop secondary network. In [29], authors have considered optimal power allocation for maximizing the transmission rate in AF-based dual-hop CogFDR network.…”

Section: Related Workmentioning

confidence: 99%

“…However, all the above mentioned papers [30][31][32][33][34][35] consider the relay nodes to use HDR while the focus of the current work is on multi-hop CogFDR networks. Even though FDR has been employed in the secondary network of CRNs [20][21][22][23][24][25][26][27][28][29], majority of them consider dual-hop secondary network for their analysis of outage and other performance metrics. Finding the transmit power allocation that optimizes the performance of secondary network in multi-hop CogFDR network remains as an open problem.…”

Section: Related Workmentioning

confidence: 99%

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Selection of optimal transmit power in multi-hop underlay cognitive full-duplex relay networks

Poornima

Babu

2018

J Wireless Com Network

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This paper investigates optimization of underlay multi-hop cognitive full-duplex relay (CogFDR) networks in independent non-identically distributed Rayleigh fading channels. First of all, analytical expressions for the outage probability experienced in the secondary network is formulated, taking into account (i) residual self-interference (RSI) arising due to full-duplex operation, (ii) inter-relay interference (IRI) arising due to frequency re-use, and (iii) interference generated by the primary transmitter on the secondary network. Optimal power allocation (OPA) that either minimizes the end-to-end outage probability or maximizes the end-to-end instantaneous rate is investigated with constraints on total available power in the secondary network and tolerable interference power at the primary receiver. The OPA vector for the outage minimization problem is obtained by solving an equivalent geometric programming problem (GPP) and that for the rate maximization problem is obtained by applying the rate balancing criterion for each hop. Extensive performance evaluations conducted with the help of Monte Carlo simulations show that transmit power optimization can improve the end-to-end rate and outage probability performance of multi-hop CogFDR network in comparison to equal power allocation on average (EPA).

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Selection of optimal transmit power in multi-hop underlay cognitive full-duplex relay networks

Poornima

Babu

2018

J Wireless Com Network

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“…Third, the ST may act as a cooperative node and may probabilistically choose between the options of either cooperating with the PU or to transmit data to secondary receiver based on some performance criteria [122]. In addition, by applying a proper relay selection technique, higher data rates can be achieved as compared to the HD counterpart in relay-based cooperative DSS networks [123]. Despite these advantages, FD-based relay suffers from the residual SI and the cross-talk interference resulted due to imperfect channel estimation [119] and it is crucial to reduce the cooperative overhead in practical scenarios.…”

Section: Summary and Insightsmentioning

confidence: 99%

“…Moreover, authors in [123] analyzed the performance of OFDM-based underlay CR network considering the selection of FD relays. Subsequently, authors analyzed the outage probability of the considered network and showed that OFDM-based CR network with FD relay selection provides higher data rates than its HD counterpart.…”

Section: B Cooperative Fd-dss Networkmentioning

confidence: 99%

Dynamic Spectrum Sharing in 5G Wireless Networks With Full-Duplex Technology: Recent Advances and Research Challenges

Sharma

Bogale

et al. 2018

IEEE Commun. Surv. Tutorials

214

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Full-Duplex (FD) wireless technology enables a radio to transmit and receive on the same frequency band at the same time, and it is considered to be one of the candidate technologies for the fifth generation (5G) of wireless communications due to its advantages including potential doubling of the capacity, reduced end-to-end and feedback delays, improved network secrecy and efficiency, and starting with a detailed overview of FD-enabled DSS, we provide a comprehensive survey of recent advances in this domain. We then highlight several potential techniques for enabling FD operation in DSS wireless systems. Subsequently, we propose a novel communication framework to enable CST in DSS systems by employing a power control-based SI mitigation scheme and carry out the throughput performance analysis of this proposed framework. Finally, we discuss some open research issues and future directions with the objective of stimulating future research efforts in the emerging FD-enabled DSS wireless systems.

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Outage performance of cognitive two‐way amplify‐and‐forward relay network under different transmission schemes

Al‐Zubi

Issa

Jebreil

et al. 2020

Trans Emerging Tel Tech

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In this article, we study an orthogonal frequency division multiplexing‐based underlay cognitive two‐way amplify‐and‐forward (AF) relay network. We assume a system model consists of a primary network that has two primary users (PUs) and a secondary network that has two secondary users (SUs) exchanging information in two‐way through a half‐duplex AF relay node. The introduced interference from the secondary network on the primary network should not exceed a maximum allowable level. In our study, we assume a channel model called hybrid channel model. Based on this model, the channels between the PUs and SUs are modeled using free‐space path loss model, while the channels between the SUs are modeled using Nakagami‐m fading model. We analyze the proposed system model in terms of signal‐to‐noise‐ratio (SNR) and outage probability (OP) under three different transmission schemes; two time slots, three time slots, and four time slots schemes. The SNR and OP at one end of the secondary network over the three transmission schemes are mathematically derived. Moreover, Monte Carlo simulation is used to verify derivations. Simulation results coincide well with theoretical results, confirming the correctness of our mathematical derivations. In addition, different scenarios of the system are studied, from which we conclude that different factors, like the transmitted power by the primary transmitter and the positions of primary transmitter and receiver as well as the relay node, have significant effect on the outage performance of the secondary network.

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Outage analysis of OFDM based cognitive radio network with full duplex relay selection

Cited by 16 publications

References 20 publications

Selection of optimal transmit power in multi-hop underlay cognitive full-duplex relay networks

Selection of optimal transmit power in multi-hop underlay cognitive full-duplex relay networks

Dynamic Spectrum Sharing in 5G Wireless Networks With Full-Duplex Technology: Recent Advances and Research Challenges

Outage performance of cognitive two‐way amplify‐and‐forward relay network under different transmission schemes

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