Spectral Sculpting for OFDM based Cognitive Radio

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Provided by: International Journal of Computer Applications
Topic: Mobility
Format: PDF
Main idea behind OFDM (Orthogonal Frequency Division Multiplexing) is to split data stream into N parallel streams of reduced data rate and transmit each on a separate subcarrier. In this paper, the authors describe the software-controllable spectral capabilities available in OFDM based UWB (Ultra Wide Band) signals. Here they intend to show how MB-OFDM signal might adapt local regulations; remedy future interference situations prepare UWB for the opportunities of cognitive radio. Spectrum sculpting for interference control is more easier and more effective with OFDM based UWB used in cognitive radio than Direct Sequence-Ultra Wide Band (DS-UWB).
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