[1] K. N. Ngan and R. Stelle, IEEE Trans. Commun. 30, 257 (1982).
[2] K. M. Rose and A. Heiman, IEEE Trans. Commun. 37, 373 (1989).
[3] J. Wu and C. Wu, Chin. Opt. Lett. 2, 325 (2004).
[4] W. M. Lam, A. R. Reibman, and B. Liu, IEEE Int. Conf. Acoustics, Speech, Signal Proc. 5, 417 (1993).
[5] Y. Wang and Y. Q. Zhang, in Video Processing and Communications (Tsinghua University Press, Beijing, 2003) chap.9, p.299.
