Title :
Realization of a nonlinear digital filter on a DSP array processor
Author :
Kwan, Hercule ; Powers, Edward J. ; Swartzlander, Earl E., Jr.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
This paper presents the performance evaluation of a fast third-order Volterra digital filtering algorithm mapped onto an AT&T DSP-3 parallel processor. Five different implementations are considered. Speed-up results indicate that the “time-skewing” method is currently the fastest. An application to nonlinear communication channel equalization using a 64-QAM signal constellation is presented
Keywords :
digital filters; digital signal processing chips; parallel processing; performance evaluation; quadrature amplitude modulation; 64-QAM signal constellation; AT&T DSP-3 parallel processor; nonlinear communication channel equalization; nonlinear digital filter; performance evaluation; third-order Volterra digital filtering algorithm; time-skewing; Communication channels; Convolution; Digital filters; Digital signal processing; Discrete Fourier transforms; Filtering algorithms; Frequency; Kernel; Navigation; Nonlinear filters;
Conference_Titel :
Application-Specific Systems, Architectures and Processors, 1997. Proceedings., IEEE International Conference on
Conference_Location :
Zurich
Print_ISBN :
0-8186-7959-X
DOI :
10.1109/ASAP.1997.606809
