A memory-efficient and high-speed sine/cosine generator based on parallel CORDIC rotations

The sine/cosine function generator is based on parallelization of the original CORDIC algorithm by predicting all the rotation directions directly from the binary bits of the initial input angle. Unlike previous approaches that require complicated circuits or exponentially increased ROM, our propose...

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Bibliographic Details
Published in:IEEE signal processing letters 2004-02, Vol.11 (2), p.152-155
Main Authors: Hsiao, S.-F., Hu, Y.-H., Juang, T.-B.
Format: Article
Language:English
Subjects:
Algorithms
Arithmetic
Circuits
Computation
Computer science
Delay
Equations
Error correction
Frequency
Generators
High speed
Parallel processing
Prediction algorithms
Read only memory
Signal generators
Signal processing
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Summary:The sine/cosine function generator is based on parallelization of the original CORDIC algorithm by predicting all the rotation directions directly from the binary bits of the initial input angle. Unlike previous approaches that require complicated circuits or exponentially increased ROM, our proposed architecture has a relatively simple prediction scheme through an efficient angle recoding. The critical path delay is also reduced by utilizing the predicted rotation directions to design an efficient multioperand carry-save addition structure.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2003.821705