A survey of CORDIC algorithms for FPGA based computers
FPGA '98 Proceedings of the 1998 ACM/SIGDA sixth international symposium on Field programmable gate arrays
An Improved Algorithm for the Generation of Nonparametric Curves
IEEE Transactions on Computers
WSEAS Transactions on Circuits and Systems
High-SFDR and multiplierless direct digital frequency synthesizer
WSEAS Transactions on Circuits and Systems
Design of a synchronous FFHSS modulator on a FPGA with system generator
WSEAS Transactions on Circuits and Systems
A study on multiple objects detection, loading and control in video for augmented reality
WSEAS Transactions on Computers
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The paper presents an analysis of a novel DDS architecture based on direct amplitude algorithmic generation in its capacity to generate pure and high frequency signals. The algorithm implementation requires very few resources and is linear in digital precision length. In its simplest form includes one compare, two additions and several increments per iteration step. A solution to compensate the known major drawback of the algorithm, sample phase non uniformity in time, is presented. The versatility of direct digital synthesizers in frequency switching and phase modulation applications is shown to be preserved in the new architecture. The paper also presents an analysis of the potential of the proposed architecture performance as reflected in the low harmonic spectrum of the quadrature output signals. A FPGA implementation of the architecture was synthesized and simulated using a VHDL description to validate the solution as proposed. Synthesis reports are compared with other FPGA direct frequency synthesizer implementations as reported in recent literature.