Cognitive Radio-Based Directional Comparison Blocking Relaying Scheme

Haj-ahmed, Mohammed A.; Hawa, Mohammed

doi:10.1109/tia.2022.3146112

Cited by 3 publications

References 27 publications

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Mathematical Analysis and Performance Evaluation of the Cell-Free mMIMO Networks Based on Cognitive Relays

Shalaby

Shahein

Shokair

2022

Wireless Pers Commun

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The Cell-Free mMIMO networks can provide a satisfied performance for 5G networks and beyond even there are shadowed users or indoor ones. The performance of cell-Free mMIMO networks was mathematically analyzed and simulated. This work aims to apply the cognitive relays in cell-Free mMIMO networks. The cell-Free mMIMO system, based on cognitive relays, is mathematically analyzed and simulated. The proposed work depends on two axes. Firstly, the relays can improve the performance of cell-Free mMIMO networks especially at shadowed users and cell-edge ones. Secondly, the cognitive radio can mitigate the interference in a cell-Free mMIMO network. The Cell-Free mMIMO network, based on cognitive relays, is proposed. The system is mathematically analyzed and simulated. The spectral efficiency SE and signal to interference plus noise ratio SINR is deduced and given in a closed form formula. It can be concluded that the cognitive relays can improve; SINR, SE, and Energy Efficiency EE of a cell-Free mMIMO network.

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Mathematical Analysis and Performance Evaluation of the Cell-Free mMIMO Networks Based on Cognitive Relays

Shalaby

Shahein

Shokair

2022

Wireless Pers Commun

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Communication Assisted Permissive Underreach Transfer Tripping Scheme

Haj-Ahmed,

Hawa,

Becker

2024

2024 IEEE/IAS 60th Industrial and Commercial Power Systems Technical Conference (I&CPS)

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Enhanced sensitive phase alpha plane scheme against high resistance ground faults

Gangolu

Sarangi

2023

International Journal of Emerging Electric Power Systems

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Phase-based Alpha (α) Plane Relaying (APR) scheme has numerous advantages over the Current Differential Relay (CDR) for transmission line protection. Since the large Restraining Region (RR) in the APR makes high security against CT saturation, channel delay, line charging current and synchronization error. However, the APR loses its sensitivity for high resistance ground faults, especially single line to ground faults under outfeed conditions. Also, losing its dependability under close-in low resistance three-phase faults. Thereby, the sequence-based APR provides enhanced sensitivity with the cost of computational burden and complexity. Hence, in this paper, the concept of the average value (I Avg) of both end instantaneous currents is used as an auxiliary logic. In which, the polarity of I Avg is incorporated as an add-on logic to the conventional APR to confirm high resistance internal faults. Thereby, the requirement of sequence components can be avoided (negative and zero). To validate the proposed auxiliary logic, it is tested for the WSCC (Western System Coordinating Council) 9-bus, 110 kV, 50 Hz. System. The simulated results under various fault cases found authenticated results. In addition, the comparative assessment and validation with real-world data reveal the enhanced sensitivity of the proposed logic under high-resistance ground faults.

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Cognitive Radio-Based Directional Comparison Blocking Relaying Scheme

Cited by 3 publications

References 27 publications

Mathematical Analysis and Performance Evaluation of the Cell-Free mMIMO Networks Based on Cognitive Relays

Mathematical Analysis and Performance Evaluation of the Cell-Free mMIMO Networks Based on Cognitive Relays

Communication Assisted Permissive Underreach Transfer Tripping Scheme

Enhanced sensitive phase alpha plane scheme against high resistance ground faults

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