MSE Analysis of Sampling Frequency Offset Estimation Scheme for OFDM-Based Digital Radio Mondiale (DRM) Systems

  • Authors:

  • Won-Jae Shin;Jeongwook Seo;Young-Hwan You

  • Affiliations:

  • School of Computer Engineering, Sejong University, Seoul, Korea 143-747;Mobile Convergence Platform Research Center, Korea Electronics Technology Institute, Seoul, Korea;School of Computer Engineering, Sejong University, Seoul, Korea 143-747

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2013

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Abstract

A precise estimation and compensation of sampling frequency offset (SFO) is an important issue in an orthogonal frequency division multiplexing (OFDM) system because of its time-variant behavior. This paper considers the problem of SFO estimation for OFDM-based digital radio mondiale (DRM) systems. In this study, we develop expressions for the mean square error (MSE) of the conventional SFO estimators used in the OFDM-based DRM system. Their low-complexity variants and computation complexity are reported. The theoretical MSE analysis for different algorithms are validated by Monte-Carlo simulations within the framework of the OFDM parameter and pilot pattern defined in the DRM specification. It is also shown that the computation complexity of the low-complexity variants is significantly reduced, compared with that of original versions.