VLSI ARCHITECTURE FOR ENERGY DETECTION BASED SPECTRUM SENSING BY USING PARALLEL PREFIX ADDERS
Keywords:Cognitive radio (CR); sensing scheme; Energy detection; spectrum utilization; ED technique; Parallel prefix adders (PPA)
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.
Keywords: Cognitive radio (CR); sensing scheme; Energy detection; spectrum utilization; ED technique; Parallel prefix adders (PPA)
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This work is licensed under a Creative Commons Attribution 4.0 International License.
International Journal of Engineering Science and Generic Research (IJESAR) by Articles is licensed under a Creative Commons Attribution 4.0 International License.