High-radix CORDIC algorithms for VLSI signal processing

Aoki, Takafumi; Nogi, H.; Higuchi, T.

doi:10.1109/sips.1997.626115

Cited by 2 publications

(2 citation statements)

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“…The cell can execute all the computing functions needed in the processor; the unique structure and simplicity of the arrays are demonstrated by typical VLSI manufacturing [10]. The production of the VLSI is possible via an FFT element [3]. DSP was achieved in FFT.…”

Section: ░ 2 Related Workmentioning

confidence: 99%

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CORDIC Processors: A Comparative Perspective of Radix-8, Radix-4, and Radix-2

Rajesh

Parvateesam

Satyanarayana

et al. 2022

IJEER

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Some data streaming applications make use of digital signal processing (DSP). The DSP algorithms include transcendental functions like trigonometry, inverse trigonometry, logarithms, exponentials, and other functions in addition to the basic arithmetic operations of multiplication and division. By modifying a few simple parameters, it is relatively simple to generate a large range of functions, including logarithmic, exponential, and trigonometric ones. Since the CPU needs around n rounds to process n bits of incoming data, the CORDIC radix-2 causes a substantial amount of latency. Therefore, radix-4 (which is radix-4 plus one) and radix-8 (which is radix-8 plus one) may be used to reduce the amount of time needed for the calculation. As a result, the total iterations drop from n/2 to n/4. As simulated and synthesized, it was shown that the radix-8 design had a significantly higher power consumption, with greater throughput than the radix-2 and radix-4 Coordinate Rotational Digital Computer (CORDIC) designs with an additional area overhead. The new algorithm also reduces the amount of twiddle elements to a minimum while also simplifying the address generating process. A novel approach makes integrating FFT processors on single chips much easier. This approach is demonstrated to be notably efficient in procedures such as SVD or matrix triangularization, in which the calculation of the rotation angle is necessary.

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Section: ░ 2 Related Workmentioning

confidence: 99%

“…Radix is the number of unique digits, including the digit zero. A lot of different locations in microprocessor design use radix multipliers [3]. For digital signal processing applications, multipliers are significant as well.…”

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confidence: 99%