A new spectrum sensing scheme using cyclic prefix for OFDM-based cognitive radio systems

Gosan Noh, Jemin Lee, Hano Wang, Seungjin You, Daesik Hong

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

7 Citations (Scopus)

Abstract

In cognitive radio systems, spectrum sensing schemes for detecting primary users in a licensed spectrum are essential to utilize the spectrum effectively. As a matter of fact, sensing accuracy is regarded as the most important factor for spectrum sensing with the intension of sufficient protection for the primary user. In this paper, we propose a new spectrum sensing scheme which exploits the cyclic prefix of an orthogonal frequency-division multiplexing (OFDM) symbol as well as idle period containing no information symbols. Redundant information in the cyclic prefix enables spectrum sensing to be more accurate and efficient. With analysis and simulation, we show that the proposed scheme can improve sensing accuracy and increase system throughput compared with the conventional system which uses only idle period.

Original languageEnglish
Title of host publication2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Pages1891-1895
Number of pages5
DOIs
Publication statusPublished - 2008
Event2008 IEEE 67th Vehicular Technology Conference-Spring, VTC - Marina Bay, Singapore
Duration: 2008 May 112008 May 14

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
CountrySingapore
CityMarina Bay
Period08/5/1108/5/14

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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