Title :
A methodology and design environment for DSP ASIC fixed point refinement
Author :
Cmar, R. ; Rijnders, L. ; Schaumont, P. ; Vernalde, S. ; Bolsens, I.
Author_Institution :
IMEC, Leuven, Belgium
Abstract :
Complex signal processing algorithms are specified in floating point precision. When their hardware implementation requires fixed point precision, type refinement is needed. The paper presents a methodology and design environment for this quantization process. The method uses independent strategies for fixing MSB and LSB weights of fixed point signals. It enables short design cycles by combining the strengths of both analytical and simulation based methods
Keywords :
application specific integrated circuits; circuit optimisation; digital signal processing chips; error statistics; fixed point arithmetic; floating point arithmetic; hardware description languages; hardware-software codesign; integrated circuit design; object-oriented methods; quantisation (signal); C++ object oriented description; DSP ASIC; LSB weights; MSB weights; VHDL; complex signal processing algorithms; design environment; error statistics; fast convergence; fixed point refinement; floating point precision; hardware implementation; independent strategies; quantization process; short design cycles; simulation statistics; type refinement; Analytical models; Application specific integrated circuits; Design methodology; Digital signal processing; Electrical capacitance tomography; Modems; Monitoring; Quantization; Signal processing; Signal processing algorithms;
Conference_Titel :
Design, Automation and Test in Europe Conference and Exhibition 1999. Proceedings
Conference_Location :
Munich
Print_ISBN :
0-7695-0078-1
DOI :
10.1109/DATE.1999.761133
