## Abstract

The authors consider the factorization of the 1-D and 2-D spectral density functions (z-transforms of real-valued autocorrelation sequences), S(z) and S(z//1,z//2) in the forms Sz equals F(z)F(z**-**1) and S(z//1, z//2) equals F(z//1, z//2) F(z//1**-**1, z//2**-**1), respectively where the coefficient of polynomials F(z) and F(z//1, z//2) are constrained to be nonnegative. The problem is solved only in special cases. In the general situation, the scopes for adapting and generalizing the iterative techniques available for the classical 1-D spectral factorization problem to tackle the nonnegativity constrained spectral factorization problem under study have been analyzed.

Original language | English (US) |
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Pages (from-to) | 1766-1769 |

Number of pages | 4 |

Journal | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |

State | Published - Jan 1 1988 |

## All Science Journal Classification (ASJC) codes

- Software
- Signal Processing
- Electrical and Electronic Engineering