Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spec... more Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spectrum of the existing licensed spectrum. This is carried out to expand the usage range. Therefore, many research works have been conducted to improve spectrum-sharing methods between primary and secondary uses. However, the biggest problem in Cognitive radio is the interference with PUs, especially how to determine the exact position of hidden primary user's receivers (PU RX). One of the fastest growing fields of research is cooperative sensing as shown by practical swarm optimization (PSO). It is expected to be a fundamental enabling technology for proficiently sensing of range in future. As a result, some spectrum vacant can be detected. This is known as spectrum holes which can be assigned to the unlicensed user without interfering with the program of the primary one. To detect spectrum holes in cognitive radios steadfastly and promptly, optimization methods must be used. This paper examines the challenges in decision faced by a cognitive radio using PSO to optimize an unlicensed or secondary user (SU). The main parameters that should be optimizing are (modulation scheme, transmit power, and packet length). For this reason, the proposed model is introduced, which determines the exact position of users. The proposed method provides better performance as compared to other techniques reported to handle this problem.
The increased demand of services and applications on the wireless communication networks in the f... more The increased demand of services and applications on the wireless communication networks in the future requires wider ranges of spectrum. This enforces the designers to develop new techniques and solutions to use the scarce spectrum efficiently. One of the proposed solutions is moving to new higher frequencies, but it is observed that the licensed spectrum is not completely used where some parts are unused and others are not utilized. Cognitive radio is an intelligent technique used in wireless networks to take advantage of unused or underutilized spectrum. This may be performed by allocating secondary users in the spectrum holes in order to enhance the efficiency of radio resource allocations. In this paper; spectrum sensing methods and secondary user allocation are performed to utilize the spectrum holes. The simulation Model is carried out using Matlab simulation program in order to study the performance of the proposed cognitive radio system.
Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spec... more Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spectrum of the existing licensed spectrum. This is carried out to expand the usage range. Therefore, many research works have been conducted to improve spectrum-sharing methods between primary and secondary uses. However, the biggest problem in Cognitive radio is the interference with PUs, especially how to determine the exact position of hidden primary user's receivers (PU RX). One of the fastest growing fields of research is cooperative sensing as shown by practical swarm optimization (PSO). It is expected to be a fundamental enabling technology for proficiently sensing of range in future. As a result, some spectrum vacant can be detected. This is known as spectrum holes which can be assigned to the unlicensed user without interfering with the program of the primary one. To detect spectrum holes in cognitive radios steadfastly and promptly, optimization methods must be used. This paper examines the challenges in decision faced by a cognitive radio using PSO to optimize an unlicensed or secondary user (SU). The main parameters that should be optimizing are (modulation scheme, transmit power, and packet length). For this reason, the proposed model is introduced, which determines the exact position of users. The proposed method provides better performance as compared to other techniques reported to handle this problem.
The increased demand of services and applications on the wireless communication networks in the f... more The increased demand of services and applications on the wireless communication networks in the future requires wider ranges of spectrum. This enforces the designers to develop new techniques and solutions to use the scarce spectrum efficiently. One of the proposed solutions is moving to new higher frequencies, but it is observed that the licensed spectrum is not completely used where some parts are unused and others are not utilized. Cognitive radio is an intelligent technique used in wireless networks to take advantage of unused or underutilized spectrum. This may be performed by allocating secondary users in the spectrum holes in order to enhance the efficiency of radio resource allocations. In this paper; spectrum sensing methods and secondary user allocation are performed to utilize the spectrum holes. The simulation Model is carried out using Matlab simulation program in order to study the performance of the proposed cognitive radio system.
Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spec... more Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spectrum of the existing licensed spectrum. This is carried out to expand the usage range. Therefore, many research works have been conducted to improve spectrum-sharing methods between primary and secondary uses. However, the biggest problem in Cognitive radio is the interference with PUs, especially how to determine the exact position of hidden primary user's receivers (PU RX). One of the fastest growing fields of research is cooperative sensing as shown by practical swarm optimization (PSO). It is expected to be a fundamental enabling technology for proficiently sensing of range in future. As a result, some spectrum vacant can be detected. This is known as spectrum holes which can be assigned to the unlicensed user without interfering with the program of the primary one. To detect spectrum holes in cognitive radios steadfastly and promptly, optimization methods must be used. This paper examines the challenges in decision faced by a cognitive radio using PSO to optimize an unlicensed or secondary user (SU). The main parameters that should be optimizing are (modulation scheme, transmit power, and packet length). For this reason, the proposed model is introduced, which determines the exact position of users. The proposed method provides better performance as compared to other techniques reported to handle this problem.
The increased demand of services and applications on the wireless communication networks in the f... more The increased demand of services and applications on the wireless communication networks in the future requires wider ranges of spectrum. This enforces the designers to develop new techniques and solutions to use the scarce spectrum efficiently. One of the proposed solutions is moving to new higher frequencies, but it is observed that the licensed spectrum is not completely used where some parts are unused and others are not utilized. Cognitive radio is an intelligent technique used in wireless networks to take advantage of unused or underutilized spectrum. This may be performed by allocating secondary users in the spectrum holes in order to enhance the efficiency of radio resource allocations. In this paper; spectrum sensing methods and secondary user allocation are performed to utilize the spectrum holes. The simulation Model is carried out using Matlab simulation program in order to study the performance of the proposed cognitive radio system.
Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spec... more Cognitive radio (CR) technology enables unlicensed (or secondary) users to use the available spectrum of the existing licensed spectrum. This is carried out to expand the usage range. Therefore, many research works have been conducted to improve spectrum-sharing methods between primary and secondary uses. However, the biggest problem in Cognitive radio is the interference with PUs, especially how to determine the exact position of hidden primary user's receivers (PU RX). One of the fastest growing fields of research is cooperative sensing as shown by practical swarm optimization (PSO). It is expected to be a fundamental enabling technology for proficiently sensing of range in future. As a result, some spectrum vacant can be detected. This is known as spectrum holes which can be assigned to the unlicensed user without interfering with the program of the primary one. To detect spectrum holes in cognitive radios steadfastly and promptly, optimization methods must be used. This paper examines the challenges in decision faced by a cognitive radio using PSO to optimize an unlicensed or secondary user (SU). The main parameters that should be optimizing are (modulation scheme, transmit power, and packet length). For this reason, the proposed model is introduced, which determines the exact position of users. The proposed method provides better performance as compared to other techniques reported to handle this problem.
The increased demand of services and applications on the wireless communication networks in the f... more The increased demand of services and applications on the wireless communication networks in the future requires wider ranges of spectrum. This enforces the designers to develop new techniques and solutions to use the scarce spectrum efficiently. One of the proposed solutions is moving to new higher frequencies, but it is observed that the licensed spectrum is not completely used where some parts are unused and others are not utilized. Cognitive radio is an intelligent technique used in wireless networks to take advantage of unused or underutilized spectrum. This may be performed by allocating secondary users in the spectrum holes in order to enhance the efficiency of radio resource allocations. In this paper; spectrum sensing methods and secondary user allocation are performed to utilize the spectrum holes. The simulation Model is carried out using Matlab simulation program in order to study the performance of the proposed cognitive radio system.
Uploads
Papers by Emhamed Aldaba