Erschienen: 19.03.2018 Abbildung von Mansour | DFT Modulated Filter Bank Transceivers for Interweave and Underlay Cognitive Radio | 2018

Mansour

DFT Modulated Filter Bank Transceivers for Interweave and Underlay Cognitive Radio

lieferbar (3-5 Tage)

Buch. Softcover

2018

Kassel University Press. ISBN 978-3-7376-0470-3

Format (B x L): 15.2 x 21.1 cm

Gewicht: 272 g

Produktbeschreibung

DFT modulated filter banks for non-orthogonal multicarrier transmission are considered a strong tool to implement both dynamic spectrum access and spectrum sensing in cognitive radio systems where signaling schemes have to meet different objectives. A constrained optimization approach is presented to design a cognitive radio transceiver which can be tailored to system specifications with a reasonable trade-off between performance and implementation efficiency. In interweave cognitive radio, the secondary user receiver is synchronized in time and frequency by designing a synthesis filter bank preamble with periodic symbols in analogy to short training fields in IEEE 802.11a. A simple post-detection integration at the secondary user receiver is employed for differently coherent detection. In underlay cognitive radio, a novel transmission scheme for secondary user power adaptation is proposed aiming to minimize the secondary user average probability of error for bit-interleaved coded modulation. The powers of the subcarrier signals are adapted subject to total power and stochastic chance-based interference constraints in order to provide a confidence level for limiting the interference at the licensed primary user receiver.

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