Cosine Modulated Filterbank Technique for Cognitive UWB

Ultra wideband (UWB) communication systems can achieve high data rate by utilizing high spectrum bandwidth. This signal typically overlaps with many existing and potentially futuristic services. In the recent years, cognitive radio (CR) has been an emerging approach for a more efficient usage of the precious radio spectrum resources. Therefore, an UWB device will successful if it has the intelligence of the cognitive radio in terms of spectrum usage. In this paper, we study different aspects of cosine modulated filterbank (CMFB) techniques over other techniques, like OFDM and multitaper method, the popular candidate schemes for spectral sensing. We intend to justify that cognitive system based on CMFB technique is more resource conscious than the traditional OFDM technique. Our study indicates that the filterbank technique is more powerful than the other techniques, when used spectral analysis. Hence, the CMFB can be an ideal candidate for cognitive UWB systems.