NDLI: FPGA implementation of optimum distributed sensing for cognitive radio network

Content Provider	IEEE Xplore Digital Library
Author	Srinu, S. Sabat, S.L.
Copyright Year	2012
Description	Author affiliation: University of Hyderabad, Hyderabad-500046, India (Srinu, S.; Sabat, S.L.)
Abstract	Spectrum sensing is an essential component in the cognitive radio (CR) systems for opportunistic usage of unutilized radio spectrum. In this paper, spectrum sensing is performed using energy measurement in a particular frequency band. This approach is extended for distributed/cooperative sensing using different hard decision fusion rules to mitigate the fading and shadowing effects in the medium. The sensing period and number of CR users required in cooperation are critical parameters in spectrum sensing. In this work, optimal sensing period is computed to maximize the achievable throughput for the Cognitive/Secondary user network with constraint that the licensed users are sufficiently protected. Moreover, the optimum number of nodes required for distributed sensing is computed based on total error rate. The sensing algorithm is also implemented with optimum number of nodes in Xilinx Virtex-4 Field Programmable Gate Array (FPGA) using MOST fusion logic.
Starting Page	897
Ending Page	902
File Size	375143
Page Count	6
File Format	PDF
ISBN	9781467348065
e-ISBN	9781467348058
DOI	10.1109/WICT.2012.6409202
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-30
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cognitive Radio Network Sensing period Error analysis Distributed spectrum sensing Throughput Cognitive radio Sensing performance FPGA Implementation Simulation Hard decision fusion logic Sensors Field programmable gate arrays Signal to noise ratio
Content Type	Text
Resource Type	Article

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