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Analysis of CFO effects on and phase compensation method for SC-FDMA systems

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Abstract

Discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) based single carrier-frequency division multiple access (SC-FDMA) is accepted as the uplink transmission scheme by the 3GPP-long term evolution standardization organization. In this paper, the effects of carrier frequency offset (CFO) on DFT-S-OFDM system are analyzed for both single user and multiple user accessing scenarios. According to the analysis, the CFO results in the attenuation, linear phase rotation, inter-symbol interference (ISI) and inter-sub-carrier interference (ICI) on the demodulated symbols of each desired user, and the multi-user interference (MUI) among uplink users. The theoretical values of ISI, ICI, and signal to interference ratio (SIR) are presented for the DFT-S-OFDM system with full and partial bandwidth detection respectively. A phase compensation method is proposed to reduce the effect of linear phase rotation on the demodulated symbols. Finally, the analytical values are verified by the simulation results.

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Authors and Affiliations

  1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China

    MingQi Li & Yun Rui

Authors
  1. MingQi Li
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  2. Yun Rui
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Correspondence to MingQi Li.

Additional information

Supported by the National High-Tech Research & Development Program of China (Grant No. 2006AA01Z280), and the National Key Project of China during the 11th Five-Year Plan Period (Grant No. 2009ZX03003-006-03)

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Li, M., Rui, Y. Analysis of CFO effects on and phase compensation method for SC-FDMA systems. Sci. China Ser. F-Inf. Sci. 52, 2397–2405 (2009). https://doi.org/10.1007/s11432-009-0200-z

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  • DOI: https://doi.org/10.1007/s11432-009-0200-z

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