• Publications
  • Influence
Direct Digital Synthesizers: Theory, Design and Applications
TLDR
This book was written to find possible applications for radio communication systems that can be precisely and rapidly manipulated under digital processor control. Expand
Methods of mapping from phase to sine amplitude in direct digital synthesis
  • J. Vankka
  • Computer Science, Medicine
  • IEEE Transactions on Ultrasonics, Ferroelectrics…
  • 5 June 1996
TLDR
A computer program has been created to simulate the effects of the memory compression and algorithmic techniques on the output spectrum of the DDS. Expand
Digital Synthesizers and Transmitters for Software Radio
TLDR
Book of digital synthesizers and transmitters for software radio, as an amazing reference becomes what you need to get. Expand
A direct digital synthesizer with an on-chip D/A-converter
TLDR
A Direct Digital Synthesizer with an on-chip D/A-converter is designed and processed in 0.8 µm BiCMOS to reduce power consumption and the complexity of the chip has a complexity of 19,100 transistors. Expand
Finnish resources for evaluating language model semantics
TLDR
This research presents three resources for evaluating the semantic quality of Finnish language distributional models: a semantic similarity judgment resource, a word analogy and a word intrusion test set. Expand
Spur reduction techniques in sine output direct digital synthesis
  • J. Vankka
  • Engineering, Computer Science
  • Proceedings of IEEE International Frequency…
  • 5 June 1996
TLDR
Three novel spur reduction methods in the DDS will be presented: modified Nicholas phase accumulator, a high-pass filtered amplitude dither and a tunable amplitude error feedback structure. Expand
A digital modulator with bandpass delta-sigma modulator
A digital quadrature modulator with a bandpass /spl Delta//spl Sigma/-modulator is presented that interpolates orthogonal input carriers by 16 and performs a digital quadrature modulation at carrierExpand
A GSM/EDGE/WCDMA modulator with on-chip D/A converter for base stations
A global system for mobile communication (GSM)/enhanced data rates for GSM evolution (EDGE)/wideband code division multiple access (WCDMA) modulator with a 14-bit on-chip digital-to-analog (D/A)Expand
Multicarrier QAM modulator
TLDR
The multicarrier QAM modulator was designed to fulfil the spectrum and error vector magnitude (EVM) specification of the wideband code division multiple access (WCDMA) system. Expand
...
1
2
3
4
5
...