Reconfigurable hybrid spectrum sensing technique for cognitive radio

V. Nithish Kumar, K. Venkata Reddy, S. Geethu, G. Lakshminarayanan, Mathini Sellathurai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


Due to massive entry of wireless services with inefficient spectrum resource utilization led to an apparent scarcity of usable radio bandwidth. Cognitive radio is well organized to utilize vacancy in the radio spectrum due to absence of primary user. Spectrum sensing i.e., detecting the presence of primary users in a licensed spectrum is the fundamental task in cognitive radio. This leads to emergence of a variety of approach to detect the presence of primary user. A two stage spectrum sensing can be used to mitigate the disadvantages of single stage detection and append the advantages of individual methods. However, the two stage detection increases the hardware and time taken to sense the spectrum. In our work, the two stage detection algorithm that was originally presented in [12] is efficiently implemented on Xilinx xc5vlx110t-1ff1136 FPGA using Dynamic Partial Reconfiguration (DPR) approach. The proposed architecture shows hardware improvement in terms of area and reconfiguration time over the conventional single stage detection techniques.

Original languageEnglish
Title of host publicationIEEE 8th International Conference on Industrial and Information Systems, ICIIS 2013
Number of pages4
ISBN (Print)978-1-4799-0908-7
Publication statusPublished - 2013
Event2013 IEEE 8th International Conference on Industrial and Information Systems - Peradeniya, United States
Duration: 17 Dec 201320 Dec 2013


Conference2013 IEEE 8th International Conference on Industrial and Information Systems
Abbreviated titleICIIS 2013
Country/TerritoryUnited States


  • Cognitive Radio (CR)
  • Covariance Absolute Value (CAV)
  • Dynamic Partial Reconfiguration (DPR)
  • Energy detection (ED)
  • Field Programmable Gate Array (FPGA)

ASJC Scopus subject areas

  • Information Systems


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