JSTS:Journal of Semiconductor Technology and Science

  • 제10권3호
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  • Pages.185-192
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  • 2010
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  • 1598-1657(pISSN)
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  • 2233-4866(eISSN)
대한전자공학회 (The Institute of Electronics and Information Engineers)
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VLSI Implementation of Auto-Correlation Architecture for Synchronization of MIMO-OFDM WLAN Systems

  • 투고 : 2010.06.28
  • 심사 : 2010.08.25
  • 발행 : 2010.09.30
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초록

This paper presents a hardware-efficient auto-correlation scheme for the synchronization of MIMO-OFDM based wireless local area network (WLAN) systems, such as IEEE 802.11n. Carrier frequency offset (CFO) estimation for the frequency synchronization requires high complexity auto-correlation operations of many training symbols. In order to reduce the hardware complexity of the MIMO-OFDM synchronization, we propose an efficient correlation scheme based on time-multiplexing technique and the use of reduced samples while preserving the performance. Compared to a conventional architecture, the proposed architecture requires only 27% logic gates and 22% power consumption with acceptable BER performance loss.

키워드

참고문헌

  1. A. V. Zelst and T.C.W. Schenk, “Implementation of a MIMO OFDM-Based Wireless LAN System,” IEEE Trans. Signal Processing, Feb., 2004. https://doi.org/10.1109/TSP.2003.820989
  2. Y. Yamanaka and H. Ochi, “Development of Prototype Board for IEEE802.11n and IP Set,” IEEE ICACT 2007.
  3. T. Kim and I. Park, “Two-step aprroach for coarse time synchronization and frequency offset estimation for IEEE 802.16d systems,” IEEE Workshop on Signal Processing Systems, Oct., 2007.
  4. H. Y. Liu and C.Y. Lee, “A Low-Complexity Synchronizer for OFDM-Based UWB System,” IEEE Trans. Circuits and Systems II: Exp. Briefs, Nov., 2006. https://doi.org/10.1109/TCSII.2006.882804
  5. A. Troya, K. Maharatna, M. Krstic, E. Grass, U. Jagdhold, and R. Kraemer, “Low-Power VLSI Implementation of the Inner Receiver for OFDMBased WLAN Systems,” IEEE Trans. Circuits and Systems I: Regular paper, Mar., 2008. https://doi.org/10.1109/TCSI.2007.913732
  6. IEEE P802.11nTM/D2.0, Feb., 2007.
  7. Erceg V. et al., “IEEE 802.11 document 03/940r2,” TGn channel models, Jan., 2004.

피인용 문헌

  1. A New Approach to Sign-Bit-Based Parameter Estimation in OFDM Receivers vol.34, pp.11, 2015, https://doi.org/10.1007/s00034-015-0025-5