Title	A Blind Chaos-Based Complex Wavelet-Domain Image Watermarking Technique
Author	S. Mabtoul, E. Ibn-Elhaj, D. Aboutajdine
Citation	Vol. 6  No. 3  pp. 134-139
Keywords	Image watermarking, chaos, dual tree complex wavelet transform, spread spectrum.

Title	Combined ML-MMSE Receiver of an STBC-CDMA System for PSK/QAM Modulation
Author	Radhia Gharsallah, Ridha Bouallegue
Citation	Vol. 7  No. 1  pp. 254-258
Keywords	STBC, PSK, QAM, spread spectrum, MAI, ML decoder, Rayleigh fading channel, multi user detection, MMSE

Title	Multiple Audio Watermarking With Spectrum Pyramid
Author	Roumen Kountchev, Mariofanna Milanova, Vladimir Todorov, Roumiana Kountcheva
Citation	Vol. 7  No. 2  pp. 191-200
Keywords	Digital watermarking, Spectrum pyramid, Complex Hadamard Transform

Title	Study of Optical Spectral CDMA Zero Cross-correlation Code
Author	E. I. Babekir, N. M. Saad, N. Elfadel, A.Mohammed, A.A. Aziz, M.S.Anuar, S.A.Aljunid, M.K. Abdullah
Citation	Vol. 7  No. 7  pp. 315-320
Keywords	Code Division Multiple Access (CDMA), Optical Spectrum Code Division Multiple Access (OSCDMA), Multiple Access Interference (MAI), Zero Cross Correlation (ZCC) code.