Performance Evaluation of Incremental Relaying in Underlay Cognitive Radio Networks with Imperfect CSI

Tu, Lam-Thanh; Tung, Phan Lam; Chien, Trinh Van; Duy, Tran Trung; Hoa, Nguyen Tien

doi:10.1109/icce48956.2021.9352039

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…Moreover, to further improve the system performance, multiple antennae at the transmitters and/or receivers can be adopted to exploit the diversity gain via diversity combining techniques [61][62][63][64]. The impact of the imperfect channel state information on the system performance is also valuable to address in future work [56,[65][66][67][68]. Another promising extension of the present paper is to enhance the system performance of both the D2D and cellular networks with the support of the reconfigurable intelligent surface (RIS) [69][70][71] and/or utilizing interference alignment to mitigate mutual interference between two networks [72,73].…”

Section: Discussionmentioning

confidence: 99%

“…Outage probability is referred to the probability that the end-to-end SINR is below a predefined threshold [55]. More precisely, let us denote OP s k (γ) as the outage probability of the k-th D2D receiver under the s ∈ {equ, ran, pl} scheme, it can be computed as [56] OP (b) is held with the help of Theorem 1. In the following, we compute the average rate of the D2D networks.…”

Section: Op Of the D2d Usermentioning

confidence: 99%

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On the Performance of Underlay Device-to-Device Communications

Nguyen

et al. 2022

Sensors

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This paper comprehensively investigates the performance of the D2D underlaying cellular networks where D2D communications are operated concurrently with cellular networks provided that the aggregate interference measured on licensed users is strictly guaranteed. In particular, we derive the outage probability (OP), the average rate, and the amount of fading (AoF) of the D2D networks in closed-form expressions under three distinct power allocation schemes, i.e., the path-loss-based, equal, and random allocation schemes. It is noted that the considered networks take into consideration the impact of the intra-D2D networks, the inter-interference from the cellular networks and background noise, thus involving many random variables and leading to a complicated mathematical framework. Moreover, we also reveal the behavior of the OP with respect to the transmit power based on the rigorous mathematical frameworks rather than the computer-based simulation results. The derived framework shows that increasing the transmit power is beneficial for the OP of the D2D users. Regarding the cellular networks, the coverage probability (Pcov) of the cellular users is computed in closed-form expression too. Monte Carlo simulations are given to verify the accuracy of the proposed mathematical frameworks. Our findings illustrate that the power allocation method based on prior path-loss information outperforms the other methods in the average sum rate.

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Section: Discussionmentioning

confidence: 99%

Section: Op Of the D2d Usermentioning

confidence: 99%

On the Performance of Underlay Device-to-Device Communications

Nguyen

et al. 2022

Sensors

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“…Considering that both the primary network and the secondary network initiate information transmission simultaneously, the underlay mode should be adopted. The authors in [27] studied the performance of the primary network and the secondary network in the underlay mode with the help of assistance of incremental amplify-and-forward relay and proposed a power control coefficient to balance the performance of the two networks. However, when the secondary network sends information, it is easy to cause interference to the primary network in underlay mode.…”

Section: Introductionmentioning

confidence: 99%

Outage Performance Analysis of CR-NOMA Based on Incremental Relay

Song

Haisong

et al. 2022

Wireless Communications and Mobile Computing

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Considering the problem of limited spectrum and relay resources, we proposed a scheme using incremental relay protocol to improve the secondary network outage performance. Firstly, a CR-NOMA network system model combined with incremental relay protocol is constructed. The primary network and the secondary network share the same relay for communication. When the user of the secondary network fails to receive information, the node closest to the shared relay is selected as an incremental relay to assist transmission. Secondly, the exact expressions of outage probability and throughput are derived, and the Monte Carlo method is used to verify the results. Based on the outage probability and throughput of the secondary network, the transmission power ratio between primary and secondary networks and the power distribution of shared relay are optimized. Compared with the average power allocation schema, it is proved that the optimized schema has advantages in improving the outage performance and throughput. Through simulation and analysis of outage performance with or without using incremental relay protocol, it is concluded that adding an incremental relay in the shared relay network can reduce the probability of system outage and improve network reliability.

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“…Cooperative communication and relaying techniques [1]- [5] are widely used in self-organized networks (such as IoTs networks) to enhance performance. So far, the cooperative relaying has been applied into various developed wireless networks such as secure communication at physical layer [6], wirelessly EH (energy harvesting) [7], NOMA (Non-Orthogonal Multiple Access) [8], IRS (Intelligent Reflecting Surface) [9], underlay spectrum sharing cognitive radio [10], etc.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation Of Multi-Hop Relaying IoTs Networks Using Hop-By-Hop Cooperative Transmission Under Impact of Co-channel Interference

An¹,

Sơn²,

Nguyen³

et al. 2022

Proceedings of the Seventh International Conference on Research in Intelligent and Computing in Engineering

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4The performance of the multi-hop relaying networks applied to Internet of Things (IoT) networks is investigated in the present work. To ameliorate the reliability of the whole network, for each hop, we employ cooperative communications subject to co-channel interference. In particular, several cooperative schemes are applied in the present work namely, incremental relaying, selection combining, and maximal ratio combining. In this context, we derive the exact closedform expressions of end-to-end (e2e) outage probability (OP) of the whole systems over Rayleigh fading distribution. Numerical results based on the Monte-Carlo method are then employed to not only confirm the accuracy of the proposed mathematical framework but also to illustrate the advantages of the considered schemes compared with the conventional multi-hop relaying without using cooperative communications.Index Terms4Cooperative communication, multi-hop relaying, co-channel interference, outage probability.

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Performance Evaluation of Incremental Relaying in Underlay Cognitive Radio Networks with Imperfect CSI

Cited by 10 publications

References 13 publications

On the Performance of Underlay Device-to-Device Communications

On the Performance of Underlay Device-to-Device Communications

Outage Performance Analysis of CR-NOMA Based on Incremental Relay

Performance Evaluation Of Multi-Hop Relaying IoTs Networks Using Hop-By-Hop Cooperative Transmission Under Impact of Co-channel Interference

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