Volume : IV, Issue : VIII, August - 2014

Evolution from SDR to Cognitive Radio

Shilpa Jain, Nidhi Taneja

Abstract :

Software Defined Radio (SDR) is a flexible radio architecture which can be configured to adapt various waveforms, frequency bands, bandwidths, modes of operations and wireless standards simply by altering the physical layer behavior through changes in its software. This paper presents a detailed survey of the existing hardware and software platform for SDRs. However, an SDR can switch functions and operations only on demand; it is not capable of reconfiguring itself into the most effective form without its user even knowing it. Therefore, Cognitive radio (CR) came into existence which extends the software radio with radio–domain model–based reasoning and would be trainable in a oad sense, instead of just programmable. In this paper a survey of spectrum sensing methodologies for cognitive radio is presented. These cognitive technologies may be considered as an application on top of a basic SDR platform.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Shilpa Jain, Nidhi Taneja Evolution from SDR to Cognitive Radio Indian Journal of Applied Research, Vol.4, Issue.8 August 2014

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