Browse > Article
http://dx.doi.org/10.12673/jant.2011.15.5.735

Effect of SNR Estimation Error on MMSE-DFE in High-speed Binary CDMA System  

Kang, Sung-Jin (Korea Univ. of Tech. and Educ., School of EEC)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.5, 2011 , pp. 735-741 More about this Journal
Abstract
In this paper, we have analyzed the effect of SNR estimation error on the BER performance of MMSE-DFE in high-speed binary CDMA system. Since MMSE equalization algorithm requires the SNR value of input signal, it should be estimated using CAZAC sequence in preamble. However, when AWGN and ISI exist simultaneously, it is impossible to estimate the exact SNR value of input signal and thereby equalizer's performance may be deteriorated. The simulation results can be used as a guideline for selection of SNR estimation algorithm for MMSE-DFE design.
Keywords
Binary CDMA; CAZAC; SNR estimation error; MMSE; DFE;
Citations & Related Records
연도 인용수 순위
  • Reference
1 지충원, 최현석, 김정선, "Binary CDMA 기반의 무선 홈 오디오 시스템," 한국정보과학회 가을 학술발표논문집, vol.34, No.2(D), pp.417-421, 2007.
2 ISO/IEC 24771, MAC/PHY standard for ad hoc wireless network to support QoS in an industrial work environment, April 2009.
3 김용성, 조진웅, "Binary CDMA 기반 Guardian Modem의 구현 및 성능 분석," 대한전자공학회 하계종합학술대회, pp.197-198, 2009.
4 A. Milewski, "Periodic Sequences with Optimal Properties for Channel Estimation and Fast Start-Up Equalization," IBM Journal of Research and Development, Vol.27, No.5, pp.426-431, Sept. 1983.
5 Wireless Medium Access Control(MAC) and Physical Layer(PHY) Specifications for High Rate Wireless Personal Area Networks (WPANs), IEEE Std 802.15.3-2003.
6 N. Al-Dhahir, J. Cioffi, "Fast Computation of Channel-Estimate Based Equalizers in Packet Data Transmission," IEEE Trans. on Signal Proc., vol.43, no.11, pp.2462-2473, Nov. 1995.   DOI   ScienceOn
7 W. Li, M. Tomisawa, "A New Receiver Architecture for Joint Carrire, Channel, and Data Estimatin for High-rate WPAN Systems," in Proc. of VTC 2002, pp.1637-1641, Sept. 2002.
8 M. Pukkila, "Iterative Receivers and Multichannel Equalisation for Time Division Multiple Access Systems," Ph.D Dissertation, Helsinki University of Technology, 2003.
9 M. Magarini, A. Spalvieri, "MMSE Decision Feedback Equalizer from Channel Estimate," in Proc. of PIMRC, pp.1722-1726. 2002