Secrecy Performance Analysis of Hybrid AF-DF Relaying Under Multi Hop Environment

Pal, Shweta; Jindal, Poonam

doi:10.1007/s11277-019-06954-2

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…where M γ l s ð Þ is obtained in (27) and γ S,D is the average SNR corresponding to the direct link between the source and destination node. Now, resorting to McKay et al, 34,Equation (10) the symbol error probability is obtained as follows:…”

Section: Performance Analysis Assuming Mrc At the Destination Nodementioning

confidence: 99%

“…Authors have used machine learning technique to dynamically allocate transmit power to all signal, based on which the AF and DF mode is selected, which improved the overall throughput. Another work 27 has investigated a secrecy analysis in single-hop, multihop, and relaying networks using, AF, DF, and hybrid AF/DF protocols. In another similar work, 28 a multihop AF relay network considering delay is consideblack.…”

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confidence: 99%

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Exact analysis of the multihop multibranch hybrid AF/DF relaying networks

Forghani

Hassan

Mabrouk

et al. 2020

Int J Communication

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Summary In this paper, the exact analysis of a multihop multibranch (MHMB) relaying network is investigated wherein each relay can operate in amplify‐and‐forward (AF) or decode‐and‐forward (DF) modes depending upon the decoding result of its received signal. If a relay decodes the received signal correctly, it works in DF mode; otherwise, the relay operates in AF mode. Therefore, we name such relaying network as hybrid amplify‐and‐forward and decode‐and‐forward (hybrid AF/DF) relaying network. We first investigate the signal transmission from source to destination node via n number of relays in a hybrid AF/DF MHMB mode. Then, we obtained the statistical features and analyze the end‐to‐end signal‐to‐noise ratio (SNR). Finally, a comprehensive performance analysis is conducted by using maximal ratio combining (MRC) scheme at the destination node. For comparison, we also obtained the results using selection combining (SC) scheme at the destination node. To the best of our knowledge, very few works in the literature have considered a general system model of MHMB relaying network wherein each relay can operate in AF or DF modes, that is, a hybrid AF/DF relaying network. Accordingly, the analysis of our system model is not only novel and exact, but also is comprehensive and can be employed in the future works.

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Section: Performance Analysis Assuming Mrc At the Destination Nodementioning

confidence: 99%

mentioning

confidence: 99%

Exact analysis of the multihop multibranch hybrid AF/DF relaying networks

Forghani

Hassan

Mabrouk

et al. 2020

Int J Communication

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“…We note that in [23][24][25], the authors consider AF and DF together to form a model in which the relay can adaptively select the collaboration method. Considering the integration of the respective advantages and disadvantages of AF and DF collaboration approaches, the literature [23] proposes a threshold-based adaptive relay collaboration approach, which makes the relay a better collaboration performance. In [24], a hybrid AF/DF cooperative system is formed to improve the achievable end-to-end performance.…”

Section: Introductionmentioning

confidence: 99%

Hybrid NOMA Protocol with Relay Adaptive AF/DF Collaboration and Its Modeling Analysis in NB-IoT

Li,

Gao,

Jia

et al. 2023

Electronics

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In order to meet the demand for large-scale device access in Narrowband Internet of Things (NB-IoT) and to overcome the problem that some resources are wasted due to the use of single decode-and-forward (DF) or amplify-and-forward (AF) collaboration in traditional collaborative communication, this paper introduces a non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA) hybrid access method into the NB-IoT and proposes a new Hybrid NOMA transmission protocol with relay adaptively selectable collaboration, which is represented as an algorithm. Based on this protocol, we classify the whole transmission process into five states after deriving the outage probability of each link. We then consider the system as a discrete-time Markov model, the closed expressions of the system outage probability and throughput are derived based on the system steady-state probability. In order to improve the system’s reliability, we further optimize the above protocol by allowing the source node to retransmit the unsuccessful received superimposed signals a limited number of times. Numerical results and simulations show that the outage probability is lower when multiple retransmissions are possible. The proposed relay adaptive collaborative hybrid NOMA transmission protocol has advantages over the pure OMA transmission mode.

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