rfsoc_dds
Systemverilog for direct digital synthesis of high-purity sinusoids for use with RFSoCs running at full sample rate
Science Score: 26.0%
This score indicates how likely this project is to be science-related based on various indicators:
-
○CITATION.cff file
-
✓codemeta.json file
Found codemeta.json file -
✓.zenodo.json file
Found .zenodo.json file -
○DOI references
-
○Academic publication links
-
○Academic email domains
-
○Institutional organization owner
-
○JOSS paper metadata
-
○Scientific vocabulary similarity
Low similarity (7.0%) to scientific vocabulary
Keywords
Repository
Systemverilog for direct digital synthesis of high-purity sinusoids for use with RFSoCs running at full sample rate
Basic Info
Statistics
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
- Releases: 2
Topics
Metadata Files
README.md
rfsoc_dds
Systemverilog for direct digital synthesis of high-purity sinusoids at full sample rate for use with RFSoCs. Also includes a sample buffer that can perform basic amplitude discrimination on input signals to generate sparse sequences of samples that are time-tagged.
Repo structure
dds_test.srcs:
Systemverilog for simulation and synthesis. The key module for direct digital synthesis (DDS) is here. DDS is implemented multiple phase increment registers configured in parallel. A four-quadrant lookup table is used (I didn't have the energy to optimize a single quadrant scheme to minimize phase quantization noise for only 4x improvement in storage space). To reduce phase quantization noise, a maximal linear-feedback shift register (LFSR) is used to provide a 1-LSB dither signal. While this increases the floor of the phase noise as compared to a 0.5-LSB dither, I found in testing that it reduced the correlated phase noise and improved the spurious-free dynamic range of the output.
Owner
- Name: QNN Group
- Login: qnngroup
- Kind: organization
- Location: Massachusetts Institute of Technology
- Website: https://www.rle.mit.edu/qnn/
- Repositories: 16
- Profile: https://github.com/qnngroup
Quantum Nanostructures & Nanofabrication group at Massachusetts Institute of Technology