Title :
A new approach for signal synthesis from smoothed versions of the Wigner distribution
Author :
Qian, Shi-E ; Morris, Joel M.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., Baltimore, MD, USA
Abstract :
A pseudo-simulated annealing (PSA) technique for signal synthesis from smoothed versions of the Wigner distribution is proposed. The PSA adopts a deterministic local search strategy to complement the global search of traditional simulated annealing and accomplish a faster convergence. The squared-error in the joint time-frequency domain is minimized with relation to the real sample sequence directly and, thereby, reduces the phase ambiguity to either 0 or π. Simulation results are provided to indicate the effectiveness of this approach
Keywords :
filtering and prediction theory; signal synthesis; simulated annealing; Wigner distribution; convergence; deterministic local search strategy; joint time-frequency domain; phase ambiguity; pseudo-simulated annealing; signal synthesis; smoothed versions; squared-error; Autocorrelation; Convergence; Eigenvalues and eigenfunctions; Random processes; Signal analysis; Signal processing; Signal synthesis; Simulated annealing; Spectrogram; Time frequency analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150140
