VLSI Architecture for Energy Detection Based Spectrum Sensing

摘要

Wireless communication and network has been increased in a modern world, as wireless devices dominating the market. This situation results in shortage of spectrum. In order to overcome this spectrum scarcity problem, one promising technology called Cognitive radio (CR) is used. This CR 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. In this paper we have implemented newly optimized energy detection architecture, in which the area and power performance will be optimized. And another ED block with reduced delay is also implemented. Such energy detection based spectrum sensing can be developed by Verilog coding using XILINX ISE software.