International Journal of Engineering Science and Generic Research http://www.ijesar.in/index.php/ijesar <p style="text-align: justify;">&nbsp;</p> <p style="text-align: justify;"><span style="font-family: lucida sans unicode,lucida grande,sans-serif;"><span style="font-size: 14px;"><strong>International Journal of Engineering Science and Generic Research (IJESAR) is a full-text database of OJS journal</strong></span></span></p> <p style="text-align: justify;"><span style="font-family: 'lucida sans unicode', 'lucida grande', sans-serif;">IJESAR is International publisher of academic and research journals; IJESAR publishes and develops titles in groups with the world's most prestigious learned societies and publishers. 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IJESAR only charge the fees necessary to recoup cost associated with running the journal</span></p> <p style="text-align: justify;"><strong style="font-family: 'lucida sans unicode', 'lucida grande', sans-serif;">Other features:</strong><span style="font-family: 'lucida sans unicode', 'lucida grande', sans-serif;">&nbsp;DIDS Assigned and Implemented the Open Review System (ORS).</span></p> en-US <p><img style="border-width: 0;" src="http://i.creativecommons.org/l/by/4.0/88x31.png" alt="Creative Commons License" width="60" height="21" border="0"><strong>International Journal of Engineering Science and&nbsp;Generic Research (IJESAR)</strong><span style="line-height: 1.3em;">&nbsp;</span><span style="line-height: 1.3em;">by </span><span style="line-height: 1.3em;">Articles</span><span style="line-height: 1.3em;"> is licensed under a </span><a style="line-height: 1.3em;" title="Journal of Biomedical and Pharmaceutical Research" href="http://creativecommons.org/licenses/by/4.0/" target="_blank" rel="license noopener">Creative Commons Attribution 4.0 International License</a><span style="line-height: 1.3em;">.</span></p> innovativelibrary6@gmail.com (Innovative Library) editor@ijesar.in (Dr A Gupta) Fri, 26 Mar 2021 04:58:39 -0400 OJS 3.2.1.1 http://blogs.law.harvard.edu/tech/rss 60 VLSI ARCHITECTURE FOR ENERGY DETECTION BASED SPECTRUM SENSING BY USING PARALLEL PREFIX ADDERS http://www.ijesar.in/index.php/ijesar/article/view/182 <p>The increase in Wireless communication and network has resulted in shortage of spectrum. In order to overcome this spectrum scarcity problem, Cognitive radio (CR) technology is used. This technology provides the way for utilization of spectrum completely by means of identifying the unused holes in the spectrum band. But the spectrum has to be sensed for identifying the available spectrum which is somewhat complicated. However the sensing of spectrum can be done by energy detection technique. Through this ED technique, complexities faced during implementation of detection process will be reduced. A newly optimized energy detection architecture has been designed, in which the area and power performance will be optimized. And another ED block with reduced delay is also implemented. To achieve better performance, in terms of area and delay, the adder is replaced with Parallel prefix adders (PPA), such as Kogge stone adder and Brent kung adder. Such energy detection based spectrum sensing has been developed by Verilog coding using XILINX ISE 14.7 software.</p> <p><strong>Keywords</strong>: Cognitive radio (CR); sensing scheme; Energy detection; spectrum utilization; ED technique; Parallel prefix adders (PPA)</p> Utukuri Roja, T. Prasanna, K. Bramaramba Copyright (c) 2021 http://creativecommons.org/licenses/by/4.0 http://www.ijesar.in/index.php/ijesar/article/view/182 Thu, 25 Mar 2021 00:00:00 -0400