NDLI: Flexibility and Reusability in the Digital Front-End of Cognitive Radio Terminals

Content Provider	Springer Nature Link
Author	Michael, Navin Vid, A. P. Moy, Christophe Palicot, Jacques
Copyright Year	2011
Abstract	Emerging communication paradigms like the cognitive radio require extremely flexible physical layer functional units that can be parameterized at runtime for supporting multiple modes. Parameterizing the hardware accelerators in the cognitive radio baseband incurs a latency penalty, which is a function of the amount of reconfiguration data required by the accelerators. In an opportunistic spectrum access scenario, the cumulative latency required to reconfigure all the physical layer units when switching to a new channel reduces the useful time available for transmission, leading to a lower system throughput. Against this background, this paper gives an overview of the amount of reconfiguration data required by different candidate accelerator architectures for performing the computationally intensive channelization function, in the digital front-end of the cognitive radio terminal. The paper also identifies opportunities for reusing hardwired stages of a channelization accelerator across multiple modes, while minimizing the reconfiguration overhead.
Starting Page	799
Ending Page	821
Page Count	23
File Format	PDF
ISSN	0278081X
Journal	Circuits, Systems, and Signal Processing
Volume Number	30
Issue Number	4
e-ISSN	15315878
Language	English
Publisher	SP Birkhäuser Verlag Boston
Publisher Date	2011-05-04
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Channelization Cognitive radio Digital front-end Flexibility hardware reuse Opportunistic spectrum access Reconfiguration latency Electronics and Microelectronics, Instrumentation Electrical Engineering Signal, Image and Speech Processing Circuits and Systems
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Signal Processing

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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