Utilization of discrete transforms to conquer the problems of multi-tone systems. - Samir Abd Elghafar; Salaheldin M. Diab; Bassiouny M. Sallam; Emad S. Hassan; Mona Shokair; Waleed Al-Nuaimy; Moawad I. Dessouky; El-Sayed M. El-Rabaie; Saleh A. Alshebeili; Fathi E. Abd El-Samie (J. Frankl. Inst., 2014)