Title :
Turbo quantization of frames
Author :
Mansour, Mohamed F.
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
We describe an iterative algorithm for quantizing overcomplete frames that achieves more than 18 dB/Octave improvement in the reconstruction error due to quantization. It starts with the trellis quantization path then successively refines the estimation with monotonically improving quantization through turbo iterations. We call the procedure turbo quantization because it resembles turbo coding in the error control coding literature.
Keywords :
error correction codes; iterative methods; quantisation (signal); signal reconstruction; signal sampling; trellis codes; turbo codes; error control coding; iterative algorithm; overcomplete frame quantization; reconstruction error; trellis quantization path; turbo coding; turbo iteration; turbo quantization; Context; Measurement; Optimization; Quantization (signal); Redundancy; Signal processing algorithms; Turbo codes; frames; integer programming; optimization; oversampling; quantization;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on
Conference_Location :
Vancouver, BC
DOI :
10.1109/ICASSP.2013.6638775
