Implementation of Interference Cancellation System for Relay Utilizing the CGM Algorithm

CGM 알고리즘을 이용한 중계기 간섭제거기 구현

  • 안성수 (명지전문대학 정보통신과) ;
  • 고정환 (인하공업전문대학 메카트로닉스과)
  • Published : 2012.03.30

Abstract

This paper shows a novel interference cancellation method of relay utilizing to the CGM algorithm in wireless communication environments. It is a problem that relay have interference cause by feedback signal of it. CGM algorithm obtained weight value that can remove the interference due to feedback signal of relay. In this paper, we confirm that performance of CGM algorithm is far superior with suitable cancellation value to remove the feedback signal. Also, we implement CGM module to verify the real-time processing of CGM algorithm using to DSP. Based on the analysis from computer simulation, it is observed that proposed algorithm is suitable for the relay in time-varying environment.

Keywords

References

  1. J. G. Prokis, and J. H. Miller, "An adaptive receiver for digital signaling through channels with intersymbol interference," IEEE Trans. Information Theory, Vol. IT-15, July 1969.
  2. 김민수, 안성수, "LMS 알고리즘을 이용한 RF 중계기의 궤환신호 제거 시스템," 대한전자공학회논문지, 제 45권, IE편, 제 1호, 2008, pp. 38-43.
  3. S. Sampei, Applications of digital wireless technologies to global wireless communications, Prentice Hall PTR, 1997, pp. 128-130.
  4. R. B. Ertel, P. Cardieri, K. W. Sowerby, T. S. Rappaport, and J. H. Reed, "Overview of spatial channel models for antenna array communication systems," IEEE Personal Comm., February, 1998, pp. 10-22,
  5. 박형근, "멀티캐리어 DS-CDMA 시스템을 위한 채널추정의 성능분석," 디지털산업정보학회 학술대회, 2006, pp. 40-48.
  6. H. Chen, T. K. Sakar, S. A. Dianat and J. D. Brule', "Adaptive spectral estimation by the conjugate gradient method," IEEE Trans. Acoust. Speech and Signal Proc., Vol. ASSP-34, No. 2, Apr. 1985.
  7. A. F. Naguib, Adaptive Antennas for CDMA Wireless Networks, Ph. D. Dissertation, Department of Electrical Engineering, Stanford Univ. Aug, 1996, pp. 54-55.
  8. S. Choi and D. shim, "A novel adaptive beamforming algorithm for a smart antenna system in a CDMA mobile communication environment," IEEE trans on Vehicular Tech, Sep, 2000, pp. 1793-1806.
  9. M. K. Presad, Third Generation Mobile Communication Systems, Artech House, 2000, pp. 33-34.
  10. J. Salz and J. Winters, "Effort of fading correlation on adaptive arrays in digital mobile radio," IEEE trans Vehicular Tech, vol. 43, no. 4, Nov, 1994, pp. 1040-1057.