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- Title
Architectural Synthesis of Fixed-Point DSP Datapaths Using FPGAs.
- Authors
Caffarena, Gabriel; López, Juan A.; Leyva, Gerardo; Carreras, Carlos; Nieto-Taladriz, Octavio
- Abstract
We address the automatic synthesis of DSP algorithms using FPGAs. Optimized fixed-point implementations are obtained by means of considering (i) a multiple wordlength approach; (ii) a complete datapath formed of wordlength-wise resources (i.e., functional units, multiplexers, and registers); (iii) an FPGA-wise resource usage metric that enables an efficient distribution of logic fabric and embedded DSP resources. The paper shows (i) the benefits of applying a multiple wordlength approach to the implementation of fixed-point datapaths and (ii) the benefits of a wise use of embedded FPGA resources. The use of a complete fixed-point datapath leads to improvements up to 35%. And, the wise mapping of operations to FPGA resources (logic fabric and embedded blocks), thanks to the proposed resource usage metric, leads to improvements up to 54%.
- Subjects
FIELD programmable gate arrays; DIGITAL signal processing; COMPUTER architecture; SYSTEMS development; COMPUTER systems; SYSTEMS design; SYSTEMS engineering; EMBEDDED computer systems; COMPUTERS
- Publication
International Journal of Reconfigurable Computing, 2009, p1
- ISSN
1687-7195
- Publication type
Article
- DOI
10.1155/2009/703267