Details

Autor(en) / Beteiligte

• Hattab, Ghaith
• Ibnkahla, Mohamed

Titel

Multiband Spectrum Access: Great Promises for Future Cognitive Radio Networks

Ist Teil von

• Proceedings of the IEEE, 2014-03, Vol.102 (3), p.282-306

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2014

Quelle

IEEE/IET Electronic Library (IEL)

Beschreibungen/Notizen

• Cognitive radio has been widely considered as one of the prominent solutions to tackle the spectrum scarcity. While the majority of existing research has focused on single-band cognitive radio, multiband cognitive radio represents great promises toward implementing efficient cognitive networks compared to single-based networks. Multiband cognitive radio networks (MB-CRNs) are expected to significantly enhance the network's throughput and provide better channel maintenance by reducing handoff frequency. Nevertheless, the wideband front-end and the multiband spectrum access impose a number of challenges yet to overcome. This paper provides an in-depth analysis on the recent advancements in multiband spectrum sensing techniques, their limitations, and possible future directions to improve them. We study cooperative communications for MB-CRNs to tackle a fundamental limit on diversity and sampling. We also investigate several limits and tradeoffs of various design parameters for MB-CRNs. In addition, we explore the key MB-CRNs performance metrics that differ from the conventional metrics used for single-band-based networks.