Masahiro
Yukawa
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My Contributions on Set-Theoretic Adaptive Filtering

Summary of My Contributions:

During my Ph.D. course, I have developed several techniques based on the set-theoretic adaptive filtering, and applied them to acoustic and communication systems (see Ph.D. Thesis [6]). To be precise, I have proposed the following:

    1. Simultaneous Use of Multiple State Data for Stereo Acoustic Echo Cancellation [1]

    2. Embedded Constraint Parallel Projection Techniques for linearly constrained adaptive filtering [2]
           ♦ Application to CDMA Wireless Communication Systems (High data-rate wireless communication for multiple users in CDMA system) [2]
           ♦ Application to Adaptive Beamforming and showed situations in which the method is particularly useful [5]

    3. Optimal Weight-Designing Strategy named "Pairwise Optimal WEight Realization (POWER)" [3]
           ♦ Application to Stereo Acoustic Echo Cancellation (High quality stereophonic acoustic telecommunication systems) [4]

    4. Adaptive Parallel Quadratic-Metric Projection Techniques [7]
           ♦ Application to Acoustic Echo Cancellation

Key Papers:
    1. Masahiro Yukawa and Isao Yamada, "Efficient adaptive stereo echo canceling schemes based on simultaneous use of multiple state data," IEICE Trans. Fundamentals, vol. E87-A, no. 8, pp. 1949--1957, Aug. 2004.

    2. Masahiro Yukawa, Renato L. G. Cavalcante and Isao Yamada, "Efficient blind MAI suppression in DS/CDMA systems by embedded constraint parallel projection techniques," IEICE Trans. Fundamentals, vol. E88-A, no. 8, pp. 2062--2071, Aug. 2005.

    3. Masahiro Yukawa and Isao Yamada, "Pairwise optimal weight realization ---Acceleration technique for set-theoretic adaptive parallel subgradient projection algorithm," IEEE Trans. Signal Processing, vol. 54, no. 12, pp. 4557--4571, Dec. 2006.

    4. Masahiro Yukawa, Noriaki Murakoshi and Isao Yamada, "Efficient fast stereo acoustic echo cancellation based on pairwise optimal weight realization technique," EURASIP Journal on Applied Signal Processing, vol. 2006, Article ID 84797, 15 pages, 2006 [ PDF].

    5. Masahiro Yukawa and Isao Yamada, "Adaptive beamforming by constrained parallel projection in the presence of spatially-correlated interferences," in Proc. 31st IEEE ICASSP, pp. 1009--1012, Toulouse: France, May 2006.

    6. Masahiro Yukawa, "A study of efficient adaptive filtering algorithms and their applications to acoustic and communication systems", Ph.D. thesis, Tokyo Institute of Technology, Sept. 2006. [PDF]

    7. Masahiro Yukawa, Konstantinos Slavakis and Isao Yamada, "Adaptive parallel quadratic-metric projection algorithms," IEEE Trans. Audio, Speech and Language Processing, vol.15, no.5, pp.1665--1680, July 2007.