Radix-2-4-8 CORDIC for fast vector rotation

Takafumi Aoki, Ichiro Kitaori, Tatsuo Higuchi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper presents a constant-scale-factor radix-2-4-8 CORDIC algorithm for fast vector rotation and sine/cosine computation. The CORDIC algorithm is a wellknown hardware algorithm for computing various elementary functions. Due to its sequential nature of computation, however, significant reduction in processing latency is required for realtime signal processing applications. The proposed radix-2-4-8 CORDIC algorithm dynamically changes the radix of computation during operation, and makes possible the reduction in the number of iterations by 37% for 64-bit precision. This paper also describes the hardware implementation of radix-2-4-8 CORDIC unit that can be installed into practical digital signal processors.

Original languageEnglish
Pages (from-to)1106-1112
Number of pages7
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number6
Publication statusPublished - 2000


  • Arithmetic circuits
  • Computer arithmetic
  • Digital signal processing
  • VLSI


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