Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio
Spectrum scarcity has emerged as a primary problem in the communications technology. The combination of cognitive radio (CR) and ultra-wideband impulse radio (UWB-IR) has been proposed to solve the shortage problem by allowing smart and adaptive spectrum management, leading to UWB-CR. In a UWB-CR sc...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2012/390280 |
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| author | Lise Safatly Mohammed Al-Husseini Ali El-Hajj Karim Y. Kabalan |
| author_facet | Lise Safatly Mohammed Al-Husseini Ali El-Hajj Karim Y. Kabalan |
| author_sort | Lise Safatly |
| collection | DOAJ |
| description | Spectrum scarcity has emerged as a primary problem in the communications technology. The combination of cognitive radio (CR) and ultra-wideband impulse radio (UWB-IR) has been proposed to solve the shortage problem by allowing smart and adaptive spectrum management, leading to UWB-CR. In a UWB-CR scheme, secondary users are supposed to ensure interference avoidance by adaptively selecting the portions of the spectrum not being used by primary users. In this paper, three different techniques for the generation of adaptive UWB pulses are studied. The Parks-McClellan algorithm is employed, a neural network is trained, and a reconfigurable band stop filter is designed to generate an adaptive waveform with nulls at specific frequencies. Simulations, measurements, and analysis show that each generated UWB pulse has remarkable advantages in the frequency utilization, spectrum avoidance, and hardware implementation. |
| format | Article |
| id | doaj-art-b07607f4bbb641f5b5dac15b6c6510c4 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-b07607f4bbb641f5b5dac15b6c6510c42025-02-03T05:45:04ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772012-01-01201210.1155/2012/390280390280Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive RadioLise Safatly0Mohammed Al-Husseini1Ali El-Hajj2Karim Y. Kabalan3Department of Electrical and Computer Engineering, American University of Beirut, Beirut 1107-2020, LebanonDepartment of Electrical and Computer Engineering, American University of Beirut, Beirut 1107-2020, LebanonDepartment of Electrical and Computer Engineering, American University of Beirut, Beirut 1107-2020, LebanonDepartment of Electrical and Computer Engineering, American University of Beirut, Beirut 1107-2020, LebanonSpectrum scarcity has emerged as a primary problem in the communications technology. The combination of cognitive radio (CR) and ultra-wideband impulse radio (UWB-IR) has been proposed to solve the shortage problem by allowing smart and adaptive spectrum management, leading to UWB-CR. In a UWB-CR scheme, secondary users are supposed to ensure interference avoidance by adaptively selecting the portions of the spectrum not being used by primary users. In this paper, three different techniques for the generation of adaptive UWB pulses are studied. The Parks-McClellan algorithm is employed, a neural network is trained, and a reconfigurable band stop filter is designed to generate an adaptive waveform with nulls at specific frequencies. Simulations, measurements, and analysis show that each generated UWB pulse has remarkable advantages in the frequency utilization, spectrum avoidance, and hardware implementation.http://dx.doi.org/10.1155/2012/390280 |
| spellingShingle | Lise Safatly Mohammed Al-Husseini Ali El-Hajj Karim Y. Kabalan Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio International Journal of Antennas and Propagation |
| title | Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio |
| title_full | Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio |
| title_fullStr | Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio |
| title_full_unstemmed | Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio |
| title_short | Advanced Techniques and Antenna Design for Pulse Shaping in UWB Cognitive Radio |
| title_sort | advanced techniques and antenna design for pulse shaping in uwb cognitive radio |
| url | http://dx.doi.org/10.1155/2012/390280 |
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