Title :
VIRGO: hierarchical DSP code generator based on vectorized signal flow graph description
Author :
Kumamoto, Norichika ; Aoki, Keiji ; Kunieda, Hiroaki
Author_Institution :
Fac. of Eng., Tokyo Inst. of Technol., Japan
Abstract :
A hierarchical digital signal processor (DSP) code generator, VIRGO, for large-scale general signal processing algorithms is proposed. Hierarchical structured vectorized signal flow graph (V-SFG) description is used as input specification. The DSP independent optimization procedure for both the program size and the execution time is performed, module by module, hierarchically with regard to operation order, memory assignment, and register allocation. Efficient code generation is demonstrated by comparing both instruction steps and dynamic steps of a practical adaptive differential pulse-code modulation (ADPCM) encoder/decoder with a conventional method
Keywords :
hierarchical systems; optimisation; program compilers; pulse-code modulation; signal processing; telecommunications computing; vector quantisation; VIRGO; adaptive differential pulse-code modulation; dynamic steps; encoder/decoder; execution time; hierarchical DSP code generator; instruction steps; large-scale general signal processing algorithms; memory assignment; operation order; optimization procedure; program size; register allocation; vectorized signal flow graph description; Digital signal processing; Digital signal processors; Flow graphs; Large-scale systems; Modulation coding; Pulse generation; Pulse modulation; Registers; Signal generators; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271294
