Upper bound for the performance metrics of amplify-and-forward cooperative networks based on harmonic mean approximation

Behnad, Aydin; Parseh, Reza; Khodakarami, Hamid

doi:10.1109/cts.2011.5898909

Cited by 11 publications

(2 citation statements)

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“…In [22], [23], it is shown that the difference between Λ a and Λ ex is always less than 1 4 , i.e., 0 Λ a − Λ ex 1 4 , regardless of the fading model being used. In particular, defining the exact and approximate outage probabilities as a function of the threshold λ th as…”

Section: System Model and Performance Analysismentioning

confidence: 99%

Jamming in Dual-Hop Amplify-and-Forward Relaying

Behnad

Wang

2015

IEEE Trans. Veh. Technol.

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The performance of a dual-hop amplify-andforward relaying system in the presence of a jammer is analyzed by obtaining the end-to-end outage probability for the scenario where the system is interference-limited and operates in either Nakagami-0.5 or Rayleigh fading environments. Then, the optimal power allocation and transmission towards the relay and destination for maximizing the outage probability is analyzed. It is shown that for both fading environments when the jammer power is sufficiently large, jamming the relay and destination with equal power allocation is optimal, while when the jamming power is low, more power should be allocated to jam any of the source-relay and relay-destination links having lower receiving signal power. In addition, the difference between the optimal and the equal power allocation performance is investigated. Analytical results are verified and illustrated by some numerical results and simulations.

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Section: System Model and Performance Analysismentioning

confidence: 99%

Jamming in Dual-Hop Amplify-and-Forward Relaying

Behnad

Wang

2015

IEEE Trans. Veh. Technol.

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“…1 This approximation is widely adopted in the literature because the effect of the approximation error can be ignored in the high SNR regime. Actually, the difference between the approximation and the exact value is not more than 1/4 [24]. (7.811.5) in [19] to calculate the first integration as…”

Section: Channel and System Modelsmentioning

confidence: 99%

Secrecy performance evaluation of cooperative vehicular relay networks against location‐uncertain eavesdroppers

Huang

Zhao

et al. 2022

Electronics Letters

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This letter is concerned with the physical layer security of the cooperative vehicular relay network where a source vehicle communicates with a destination vehicle via both a direct link in the presence of a locationuncertain eavesdropping vehicle and an indirect link with the help of an amplify-and-forward relay vehicle. Based on the double-Rayleigh fading model for all links, an approximate analytical expression of the average secrecy capacity of the considered system is derived. This analysis on the average secrecy capacity is shown to be validated by Monte-Carlo simulations and numerical computations. The simulation and numerical results also demonstrate the effects of the uncertainty of the eavesdropper's location and the relay's location on the average secrecy capacity.

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