A New Side-lobe Canceller with Adaptive Compensator

  • Park, Keun-Soo (Dept. of Electronics Eng., Pusan National University) ;
  • Lee, Young-Ho (Dept. of Electronics Eng., Pusan National University) ;
  • Park, Jang-Sik (Dept. of Visual Technologies, Dongeui Institute Technology) ;
  • Son, Kyung-Sik (Dept. of Electronics Eng., Pusan National University)
  • 발행 : 2002.09.01

초록

In the conventional generalized side-lobe canceller (GSC), the output is an estimated error signal that causes the adaptive filter weights do not converge to the optimal value. This paper presents a new side-lobe canceller with adaptive compensator th it reduces the misadjustment of the adaptive filter coefficients for the structural problem in the GSC. The adaptive compensator separates the output signal from the estimated error. The newly estimated error signal converges to the zero while the output signal tracks the target signal. This paper shows improvement of the performance by comparing the computer simulation of the output signal of GSC with the output signal of the proposed algorithm.

키워드

참고문헌

  1. D. H. Johnson and D. E. Dudgeon, Array signal Processing: Concepts and techniques, Prentice Hall, 1993
  2. B. Widrow and S. D. Stearns, Adaptive Signal Processing, Prentice Hall, 1985
  3. J. H. Cho and J. S. Lehnert, 'Blind adaptive multiuser detection for DS/SSMA communications with generalized random spreading,' IEEE Trans. on Communications, 49, 1082-1091, Jun. 2001 https://doi.org/10.1109/26.930638
  4. O. L. Frost-III, 'An algorithm for Iinearly constrained adaptive array processing,' Proceedings of the IEEE, 60, 926-935, Aug. 1972 https://doi.org/10.1109/PROC.1972.8817
  5. L. J. Griffiths and C. W. Jim, 'An alternative approach to linearly constrained adaptive beamforming,' IEEE Trans. on Antennas Propagat., AP-30, 27-34, Jan. 1982 https://doi.org/10.1109/TAP.1982.1142739
  6. P. M. Clarkson, Optimal and adaptive signal processing, CRC Press, 1993
  7. M. Joho and J. Moschytz, 'On the design of the target-signal filter in adaptive beamforming,' IEEE Trans. on Circuits and Systems II, 46, 963-966, Jul. 1999 https://doi.org/10.1109/82.775395
  8. A. L. Swindlehurst, S. Daas, and J. Yang, 'Analysis of a decision directed beamformer,' IEEE Trans. on Signal Processing, 43, 2920-2927, Dec. 1995 https://doi.org/10.1109/78.476435
  9. J. A. Flynn, W. L. Fox, J. A. Ritcey, D. R. Jackson and D. Rouseff, 'Decision-directed passive phase conjugation for underwater acoustic communications with results from a shallow-water trial,' Record of the Thirty-Fifth Asilomar Conference on Signals, Systems and Computers, 2, 1420-1427, Aug. 2001
  10. K. S. Son, 'Adaptive noise canceller with adaptive compensator and their adaptive algorithms,' Kyungpook National Univ., Ph.D., Jun. 1991
  11. K. C. Ho, 'A minimum misadjustment adaptive FIR filter,'IEEE Trans. on Signal Processing., 44 (3), 577-585 Mar. 1996 https://doi.org/10.1109/78.489031
  12. M. Tanaka, Y. KAneda, S. Makino and J. Kojima, 'Fast projection algorithm and its step size control,' Proceedings of Int. Conf. Acoustics, Speech, and Signal Processing, Detroit, MI, 945-948, 1995