Title :
Theory and test procedure for symmetries in the frequency response of complex two-dimensional delta operator formulated discrete-time systems
Author :
Reddy, Hari C. ; I-Hung Khoo ; Moschytz, George S. ; Stubberud, Allen R.
Author_Institution :
Dept. of Electr. Eng., California State Univ., Long Beach, CA, USA
Abstract :
This paper provides the theory and an efficient tabular algorithm to test for various symmetries in the magnitude response of two-dimensional (2-D) complex-coefficient delta operator formulated discrete-time systems. In general, centro symmetry is not preserved in the complex case. The conditions under which this is preserved is discussed in the paper. It is to be noted that as the sampling period (Δ) goes to zero, the symmetry conditions merge with that of 2-D continuous-time case
Keywords :
discrete time filters; frequency response; mathematical operators; polynomials; symmetry; two-dimensional digital filters; discrete-time system; frequency response; magnitude response; symmetry; tabular algorithm; two-dimensional complex-coefficient delta operator; Algorithm design and analysis; Discrete time systems; Filters; Frequency response; Information processing; Polynomials; Process design; Sampling methods; Signal processing; System testing;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612800
