Outage Performance Improvement by Selected User in D2D Transmission and Implementation of Cognitive Radio-Assisted NOMA

Do, Dinh‐Thuan; Nguyen, Minh-Sang Van; Lee, Byung Moo

doi:10.3390/s19224840

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…This work, nonetheless, computed the sum rate via numerical results in place of the rigorous mathematical framework. Authors in [23] studied the outage probability of the cognitive radio D2D transmission. The amount of fading (AoF) of the D2D networks was investigated in [24,25], however, it was derived based on the Fox-H function, which is not stable and mathematically intractable.…”

Section: State-of-the-artmentioning

confidence: 99%

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: State-of-the-artmentioning

confidence: 99%

On the Performance of Underlay Device-to-Device Communications

Nguyen

et al. 2022

Sensors

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“…It allows allocating one frequency channel to multiple users at the same time within the same cell either in the power domain or the code domain. Moreover, NOMA offers a number of advantages, including improved spectral efficiency, enhanced resource allocation, higher cell-edge throughput, and lower latency (no scheduling request from users to base station is required) [9][10][11].…”

Section: Our Contributionsmentioning

confidence: 99%

D2D Mobile Relaying Meets NOMA—Part I: A Biform Game Analysis

Driouech

Sabir

Ghogho

et al. 2021

Sensors

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Structureless communications such as Device-to-Device (D2D) relaying are undeniably of paramount importance to improving the performance of today’s mobile networks. Such a communication paradigm requires implementing a certain level of intelligence at device level, allowing to interact with the environment and select proper decisions. However, decentralizing decision making sometimes may induce some paradoxical outcomes resulting, therefore, in a performance drop, which sustains the design of self-organizing, yet efficient systems. Here, each device decides either to directly connect to the eNodeB or get access via another device through a D2D link. Given the set of active devices and the channel model, we derive the outage probability for both cellular link and D2D link, and compute the system throughput. We capture the device behavior using a biform game perspective. In the first part of this article, we analyze the pure and mixed Nash equilibria of the induced game where each device seeks to maximize its own throughput. Our framework allows us to analyse and predict the system’s performance. The second part of this article is devoted to implement two Reinforcement Learning (RL) algorithms enabling devices to self-organize themselves and learn their equilibrium pure/mixed strategies, in a fully distributed fashion. Simulation results show that offloading the network by means of D2D-relaying improves per device throughput. Moreover, detailed analysis on how the network parameters affect the global performance is provided.

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“…Optimization of power allocation and time of energy harvesting in secondary user for outage minimization is done in [10]. Device-to-device (D2D) transmission together with traditional communication is presented in [11] to form a new system model in NOMA. The perfect Successive Interference Cancellation (SIC) is assisted to cancel the interference.…”

Section: Introductionmentioning

confidence: 99%

Outage analysis of cognitive communication system using opportunistic relay selection and secondary users as relays

Javadzadeh

Zahedi

2022

International Journal of Electronics Letters

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Efficient bandwidth utilization is significant in new communication systems where secondary users can be used besides of primary users considering interference issues and idle state of primary users. Using secondary users as relays to transmit their own signals in addition to the primary signals can be applied for more reliability of the system where opportunistic relay selection can significantly enhance the performance of the system. The best-condition secondary user is selected as the optimum relay for retransmission of primary/secondary signal. Outage probability is analyzed in this paper based on decode and forward techniques in secondary users while the closed-form statement for outage probability is provided and verified by numerical evaluations.

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Outage Performance Improvement by Selected User in D2D Transmission and Implementation of Cognitive Radio-Assisted NOMA

Cited by 6 publications

References 39 publications

On the Performance of Underlay Device-to-Device Communications

On the Performance of Underlay Device-to-Device Communications

D2D Mobile Relaying Meets NOMA—Part I: A Biform Game Analysis

Outage analysis of cognitive communication system using opportunistic relay selection and secondary users as relays

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