Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
A scalable correlator architecture based on modular FPGA hardware, reuseable gateware, and data packetization
Publications of the Astronomical Society of the Pacific, Volume 120, No. 873, Year 2008
Notification
URL copied to clipboard!
Description
A new generation of radio telescopes is achieving unprecedented levels of sensitivity and resolution, as well as increased agility and field of view, by employing high-performance digital signal-processing hardware to phase and correlate signals from large numbers of antennas. The computational demands of these imaging systems scale in proportion to BMN2, where B is the signal bandwidth, M is the number of independent beams, and N is the number of antennas. The specifications of many new arrays lead to demands in excess of tens of PetaOps per second. To meet this challenge, we have developed a general-purpose correlator architecture using standard 10-Gbit Ethernet switches to pass data between flexible hardware modules containing Field Programmable Gate Array (FPGA) chips. These chips are programmed using open-source signal-processing libraries that we have developed to be flexible, scalable, and chip-independent. This work reduces the time and cost of implementing a wide range of signal-processing systems, with correlators foremost among them, and facilitates upgrading to new generations of processing technology. We present several correlator deployments, including a 16-antenna, 200-MHz bandwidth, 4-bit, full-Stokes parameter application deployed on the Precision Array for Probing the Epoch of Reionization. © 2008. The Astronomical Society of the Pacific. All rights reserved.
Authors & Co-Authors
Parsons, Aaron R.
United States, Berkeley
University of California, Berkeley
Backer, Donald C.
United States, Berkeley
University of California, Berkeley
Siemion, Andrew P.V.
United States, Berkeley
University of California, Berkeley
Chen, Henry
United States, Berkeley
Space Sciences Laboratory
Werthimer, Dan J.
United States, Berkeley
Space Sciences Laboratory
Droz, Pierre
United States, Berkeley
University of California, Berkeley
Filiba, Terry
United States, Berkeley
University of California, Berkeley
Manley, Jason R.
United States, Berkeley
University of California, Berkeley
South Africa, Cape Town
Karoo Array Telescope
McMahon, Peter
United States, Berkeley
University of California, Berkeley
South Africa, Cape Town
Karoo Array Telescope
Parsa, Arash
United States, Berkeley
University of California, Berkeley
MacMahon, David Harold Edward
United States, Berkeley
University of California, Berkeley
Wright, Melvyn C.H.
United States, Berkeley
University of California, Berkeley
Statistics
Citations: 74
Authors: 12
Affiliations: 3
Identifiers
Doi:
10.1086/593053