Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Performance Evaluation of a Windowed-Sinc Function-Based PAPR Reduction Scheme for OFDM Polar Transmitters

OFDM polar transmitter를 위한 windowed-sinc 함수 기반의 PAPR 감소기법의 성능평가

  • Seo, Man-Jung (School of Electronic Engineering, Soongsil University) ;
  • Shim, Hee-Sung (School of Electronic Engineering, Soongsil University) ;
  • Im, Sung-Bin (School of Electronic Engineering, Soongsil University)
  • 서만중 (숭실대학교 정보통신전자공학부) ;
  • 심희성 (숭실대학교 정보통신전자공학부) ;
  • 임성빈 (숭실대학교 정보통신전자공학부)
  • Published : 2010.01.25
Download PDF
⟨ Previous Next ⟩

Abstract

The polar transmitter is applied to the narrowband communication systems such as GSM (Global System for Mobile Communications), EDGE (Enhanced Data Rates for GSM Evolution), and GPRS (General Packet Radio Service). To apply polar transmitter for the wideband communication like OFDM (Orthogonal Frequency Division Multiplexing) where the high PAPR (Peak-to-Average Power Ratio) problem occurs, this paper proposes a windowed-sinc function based PAPR reduction scheme. The proposed algorithm mitigates the effect of excessive suppression due to successive peaks or relatively high peaks of the signal. The BER (Bit Error Rate) and EVM (Error Vector Magnitude) performances are measured for various window types and lengths. The simulation results demonstrate that the proposed algorithm achieves significant improvement in terms of BER and PAPR reduction performance with similar spectrum performance to the conventional peak windowing scheme.

Polar transmitter는 현재 GSM (Global System for Mobile Communications), EDGE (Enhanced Data Rates for GSM Evolution), GPRS (General Packet Radio Service) 등과 같은 협대역 통신 방식에만 주로 적용되고 있다. 본 논문에서는 polar transmitter를 OFDM (Orthogonal Frequency Division Multiplexing)과 같은 광대역 통신방식에 적용하기 위해 OFDM 통신 시스템이 가지고 있는 높은 PAPR (Peak-to-Average Power Ratio)을 감소시킬 수 있는 windowed-sinc 함수 기반의 PAPR 감소기법을 제안한다. 이 방법은 기존의 피크 윈도잉 (peak windowing) 기법에서 매우 인접한 여러 개의 피크들 또는 주변 신호에 비해 상대적으로 큰 피크에 의해 발생하는 과도한 신호 왜곡 효과를 완화시킨다. 다양한 윈도우 형태와 길이를 적용하여 비트오율 (Bit Error Rate; BER)과 오차 벡터 크기 (Error Vector Magnitude; EVM)를 측정한 결과, 제안된 기법은 기존의 피크 윈도잉 기법과 유사한 스펙트럼 성능을 가지면서 비트오율의 향상 및 PAPR 감소 성능이 우수함을 나타내었다.

Keywords

References

  1. J. Groe, "Polar Transmitters for Wireless Communications," IEEE Commun. Mag., vol. 45, no. 9, pp. 58-63, Set. 2007.
  2. 김준형, 정재호, 권헌국, 이광천, "차세대 RF 트랜시버 기술 동향," 전자통신동향분석, vol. 23, no. 3, pp. 72-81, 2008년 6월.
  3. M. Talonen and S. Lindfors, "System Requirements for OFDM Polar Transmitter," Proc. Circuit Theory and Design 2005, vol. 3, pp. 69-72, Aug. 2005.
  4. R. Prasad, OFDM for Wireless Communications Systems, Artech House, 2004.
  5. S. C. Cripps, RF Power Amplifiers for Wireless Communications, Northwood, MA: Artech House, 1999.
  6. A. Chini, Y. Wu, M. El-Tanny, and S. Mahmoud, "Hardware nonlinearities in digital TV broadcasting using OFDM modulation," IEEE Trans. Broadcast., vol. 44, no. 1, pp. 12-21, Mar. 1998. https://doi.org/10.1109/11.713052
  7. E. Costa, M. Midrio, and S. Pupolin, "Impact of amplifier nonlinearities on OFDM transmission system performance," IEEE Commun. Lett., vol. 3, no. 2, Feb. 1999.
  8. X. Li and L. J. Cimini, "Effects of Clipping and Filtering on the Performance of OFDM," IEEE Commun. Lett., vol. 2, no. 5, pp. 131-133, May 1998. https://doi.org/10.1109/4234.673657
  9. R. Van Nee and A. De Wild, "Reducing the peak-to-average power ratio of OFDM," Proc.IEEE VTC'98, vol. 3, pp. 2072-2076, May 1998.
  10. A. E. Jones, T. A. Wilkinson, and S. K. Barton, "Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes," IEE Electr. Lett., vol. 30, no. 25, pp. 2098-2099, Dec. 1994. https://doi.org/10.1049/el:19941423
  11. R. W. Bauml, R. F. H. Fischer, and J. B. Huber, "Reducing the peak-to-average power ratio of multicarrier modulation by selective mapping," IEE Electr. Lett., vol. 32, no. 22, pp. 2056-2057, Oct. 1996. https://doi.org/10.1049/el:19961384
  12. L. J. Cimini Jr. and N. R. Sollenberger, "Peak-to average power ratio reduction of OFDM signal using partial transmit sequences," IEEE Commun. Lett., vol. 4, no. 3, pp. 86-88, Mar. 2000. https://doi.org/10.1109/4234.831033
  13. L. R. Kahn, "Single sideband transmission by envelope elimination and restoration," Proc. IRE, vol. 40, no. 7, pp. 803-806, Jul. 1952.
  14. L. R. Kahn, "Single sideband transmission by envelope elimination and restoration," Proc. IRE, vol. 40, no. 7, pp. 803-806, Jul. 1952.
  15. O. Vaananen, J. Vankka, and K. Halonen, Effect of Clipping in Wideband CDMA System and Simle Algorithm for Peak Windowing, Helsinki University of Technology, 2002.
  16. O. Vaananen, J. Vankka, and K. Halonen, "Simple algorithm for peak windowing and its application in GSM, EDGE and WCDMA systems," IEE Proc.-Commun., vol. 152, no. 3, pp. 357-362, Jun. 2005.
  17. 서만중, 심희성, 임성빈, 정재호, 이광천, "OFDM Polar Transmitter에서 피크 윈도잉 기반의 PAPR 감소기법의 성능평가," 대한전자공학회논문지, Vol.45, No. 12, pp. 42-48, Dec. 2008.