Earticle

초록

영어

A blind-mode integer frequency offset estimation algorithm is proposed for an OFDM system. Imperfect integer frequency offset estimation causes ambiguity in the data sub-carrier position. Morelli's blind integer frequency offiet estimation algorithm exploits the likelihood function by comparing the power in sub-carriers. It, however, shows performance degradation when there is the fractional frequency offset. The proposed algorithm solves this by using interpolation in the frequency domain. In this algorithm, it is exploited that the effect of the frequency offset is shown as a shift of power spectrum. By calculating the covariance of over-sampled samples, most approximate samples to integer point are obtained. It enables integer frequency offset estimation less affected by fractional frequency offset.

목차

Abstract
 1 Introduction
 2 Signal Modeling
 3 Conventional Integer Frequency Offset Estimation Algorithm
 4 Proposed Integer Frequency Offset Estimation Algorithm
 5 Simulation
 6 Conclusion
 References

키워드

저자

• Yoon, Dae-Gung [ Department of Electrical and Computer Engineering, University of Minnesota ]
• Han, Dong-Seog [ School of EECS, Kyungpook National University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국정보기술응용학회 학술대회

• 간기

  부정기

• 수록기간

  2001~2011

• 십진분류

  KDC 005 DDC 005