Title :
A design method for a periodically time-varying digital filter for spectrum scrambling
Author :
Ishii, Rokuya ; Kakishita, Masahiro
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
fDate :
7/1/1990 12:00:00 AM
Abstract :
A spectrum scrambling method is presented using the bifrequency map. It is proposed that a periodically time-varying digital filter can be designed using a bifrequency map and a conventional filter design method. A structure for a periodically time-varying digital filter which can be implemented easily on a digital signal processor is presented
Keywords :
digital filters; filtering and prediction theory; time-varying networks; bifrequency map; design method; digital signal processor; periodically time-varying digital filter; spectrum scrambling; Acoustical engineering; Design methodology; Digital filters; Digital signal processors; Frequency conversion; Joining processes; Privacy; Sampling methods; Telephony; Vehicles;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
