Proceedings ArticleDOI
A unified algorithm for elementary functions
J. S. Walther
- pp 379-385
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This paper describes a single unified algorithm for the calculation of elementary functions including multiplication, division, sin, cos, tan, arctan, sinh, cosh, tanh, arCTanh, In, exp and square-root.Abstract:
This paper describes a single unified algorithm for the calculation of elementary functions including multiplication, division, sin, cos, tan, arctan, sinh, cosh, tanh, arctanh, In, exp and square-root The basis for the algorithm is coordinate rotation in a linear, circular, or hyperbolic coordinate system depending on which function is to be calculated The only operations required are shifting, adding, subtracting and the recall of prestored constants The limited domain of convergence of the algorithm is calculated, leading to a discussion of the modifications required to extend the domain for floating point calculationsread more
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Journal ArticleDOI
Versatile COFDM demodulator design based on the CORDIC-algorithm
TL;DR: The advantages of the CORDIC-algorithm compared to complex multiplication in butterfly-operations and NCOs (numerical controlled oscillator), which are often used in digital transmission systems, are discussed.
Journal ArticleDOI
Digital SPWM synthesis for the design of single phase inverters
Lucien Ngalamou,Leary Myers +1 more
TL;DR: In this paper, an all-digital concept for sinusoidal pulsewidth modulation (SPWM) generation is presented, which uses modern arithmetic algorithms to impose a sinusoid variation of the switching pulses that control the power transistors of a single-phase inverter, thus improving the linear characteristics of the inverter output signal.
Proceedings ArticleDOI
High-radix CORDIC for vector rotation with pipelined FPGA implementation
TL;DR: A new, mixed-radix ( radix-4/radix-2) CORDIC algorithm for vector rotation and an efficient, pipelined implementation in Atmel's AT40K technology are presented.
Book ChapterDOI
Adaptive Arrays for Communications
TL;DR: The aim of this paper is to review the state of the art about adaptive arrays for communications, to discuss some novel ideas and very recent contributions, and to give a future perspective of lines of work.
Proceedings ArticleDOI
CORDIC iterations based architecture for low power and high quality DCT
TL;DR: The proposed CORDIC based 2D DCT architecture is simulated using Modelsim and the experimental results show that the reconfigurable DCT achieves power savings with improved image quality.
References
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Journal ArticleDOI
The CORDIC Trigonometric Computing Technique
TL;DR: The trigonometric algorithms used in this computer and the instrumentation of these algorithms are discussed in this paper.
Journal ArticleDOI
Decimal-Binary Conversions in CORDIC
TL;DR: The CORDIC conversion technique is sufficiently general to be applied to decimal-binary conversion problems involving other mixed radix systems and other decimal codes.