Search Results - Spectrum optimization

Optimal Sensing for Opportunistic Spectrum Access in Cognitive Radio by Armi, Nasrullah, M Saad, M Naufal, Yusoff, Mohd Zuki, Arshad, Muhammad

“…The derivation of greedy approach proves that sensing problem can be solved either optimally or approximate the optimal solution. Computer simulation is used to evaluate the performances both of optimal and sub optimal strategy.…”
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MAC Protocol for Opportunistic Spectrum Access in Cognitive Radio System by Armi, Nasrullah, M Saad, M Naufal, Yusoff, Mohd Zuki, Arshad, Muhammad

“…The derivation of greedy approach proves that sensing problem can be solved either optimally or approximate the optimal solution. Computer simulation is used to evaluate the performances both of optimal and sub optimal strategy.…”
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Cognitive radio based optimal sensing for resource allocation in smart cities/villages by M. N., Morshed, Sabira, Khatun, V., Vijayasarveswari, Fakir, Md Moslemuddin, M. Z., Ibrahim, Kamarul Hawari, Ghazali, Mohd Hisyam, Mohd Ariff

“…Cognitive radio is the cutting edge wireless technology that is used to solve the spectrum saturation problem. In cognitive radio, secondary users use primary user’s spectrum (licensed band) during primary user’s absence. …”
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An energy-efficient spectrum-aware reinforcement learning-based clustering algorithm for cognitive radio sensor networks by Mustapha, Ibrahim, Mohd Ali, Borhanuddin, A. Rasid, Mohd Fadlee, Sali, Aduwati, Mohamad, Hafizal

“…In this paper, we propose a reinforcement learning-based spectrum-aware clustering algorithm that allows a member node to learn the energy and cooperative sensing costs for neighboring clusters to achieve an optimal solution. …”
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Predicting autistic spectrum disorder for toddler using ant colony optimization / Nur Ibtisyam Zafri by Zafri, Nur Ibtisyam

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Assignment of spectrum demands by merits via analytic hierarchy process and integer programming by Ramli, Razamin, Jamaluddin, Faathirah, Engku Abu Bakar, Engku Muhammad Nazri, Alias, Mohamad Yusoff, Mahat, Nor Idayu, Abdul Karim, Mohd Zaini

“…The integrated optimization model is able to tackle a multi-criteria spectrum problem and then solve the assignment problem by way of maximizing the total efficiency. …”
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Summary of best efficient algorithms on cognitive radio cooperative spectrum sensing to improve QoS by Akbari, M., Reza, A.W., Noordin, K.A., Manesh, M.R., Hindia, M.N.

“…In fact, all steps of genetic algorithm (GA), particle swarm optimization (PSO) and imperialistic competitive algorithm (ICA) will be well mentioned in details and investigated on cognitive radio cooperative spectrum sensing (CRCSS) method. …”
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Recent Efficient Iterative Algorithms on Cognitive Radio Cooperative Spectrum Sensing to Improve Reliability and Performance by Akbari, M., Reza, A.W., Noordin, K.A., Dimyati, K., Manesh, M.R., Hindia, M.N.

“…In fact, all steps of genetic algorithm (GA), particle swarm optimization (PSO), and imperialistic competitive algorithm (ICA) will be well mentioned in detail and investigated on cognitive radio cooperative spectrum sensing (CRCSS) method. …”
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Dynamic smart grid communication parameters based cognitive radio network by Haider H.T., Muhsen D.H., Shahadi H.I., See O.H., Elmenreich W.

“…The demand for more spectrums in a smart grid communication network is a significant challenge in originally scarce spectrum resources. …”

E-D2CARP: a joint path and spectrum diversity based routing protocol with an optimized path selection for cognitive radio ad hoc networks by Che-Aron, Zamree, Hassan Abdalla Hashim, Aisha, Hassan, Wan Haslina, Abdullah, Khaizuran, Rahman, Muhammad ArafatuR

“…This paper proposes a joint path and spectrum diversity based routing protocol with an optimized path selection for CRAHNs, referred to the Enhanced Dual Diversity Cognitive Ad-hoc Routing Protocol (E-D2CARP). …”
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EFFECT OF WINDSPEED TO WAVE HEIGHT ON CONTINENTAL SHELF MALAYSIA by Khaidzi, Sharifah Nur Ainiza

“…Correlation between wind speed and wave height need to take into consideration when designing offshore platform in order to optimize the usage of the platform material and optimize the operational period. …”
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Performance analysis of OFDM-PSK system for optimization of fiber optic dispersion by Ibrahimy, Muhammad Ibn, Akhter, Fowzia, Siddiquei, Hasin Reza

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Prospects and problems of cognitive radio network architectures in wireless sensor networks by Salami, Abdulazeez F., Hussaini, Mukhtar, Anwar, Farhat, Bello-Salau, Habeeb

“…Spectrum sensing gathers up-to-date spectrum usage data, spectrum management determines the optimal spectrum access timing and scheme, and spectrum sharing ensures that users are served in a fair and timely manne…”
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Improving spectrum efficiency on cognitive radio spectrum sensing with enhanced diversity concept / Mohsen Akbari by Mohsen, Akbari

“…These capabilities can be realized through spectrum management functions that address four main challenges: spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility. …”
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A reinforcement learning-based energy-efficient spectrum-aware clustering algorithm for cognitive radio wireless sensor network by Mustapha, Ibrahim

“…Firstly, a RL based spectrum-aware clustering scheme in which a cluster member node learns energy and cooperative sensing costs for neighbouring clusters through exploration and imposes pairwise constraint to select optimal cluster. …”
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A novel hybrid photovoltaic current prediction model utilizing singular spectrum analysis, adaptive beluga whale optimization, and improved extreme learning machine by Mohammed Ridha, Hussein, Ahmadipour, Masoud, Alghrairi, Mokhalad, Hizam, Hashim, Mirjalili, Seyedali, Zubaidi, Salah L., Mohammed S, Marwa Y.

“…This paper introduces a novel prediction hybrid model based on singular spectrum analysis (SSA), adaptive beluga whale optimization (ABWO), and an improved extreme learning machine (IELM). …”
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Quality of service (QoS) on auto free channel discovery using Metageeks wispy 2.4x spectrum analyzer / Noor Azlina Md Norani by Md Norani, Noor Azlina

“…This research comes out with an objective aim to optimize auto free channel discovery on Metageeks Wi-Spy 2.4x spectrum analyzer at Business Information Technology (M) Sdn Bhd. …”
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Antenna arrays in multi-user detection of spread spectrum signals by Karim, M.R., Wei, S.

“…In a code division multiple access (CDMA) spread spectrum system, each user is assigned a unique scrambling code. …”
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CYCLOSTATIONARY FEATURES OF PAL TV AND WIRELESS MICROPHONE FOR COGNITIVE RADIO APPLICATIONS by ALHASSAN MOSSA, ALFATEH MOHAMMED

“…Frequency spectrum being a scarce resource in communication system design, spectrum sharing seems to be the solution to an optimal utilization of frequency spectrum. …”
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Distributed joint power control, beamforming and spectrum leasing for cognitive two-way relay networks by Iranpanah, Havzhin

“…A search method with numerous advantages over conventional algorithms, has been designed to solve the optimization problems with an enhanced global optimality and convergence speed. …”
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