NDLI: A polyphase filter for GPUs and multi-core processors

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A polyphase filter for GPUs and multi-core processors

Content Provider	ACM Digital Library
Author	van der Veldt, Karel van Nieuwpoort, Rob Varbanescu, Ana Lucia Jesshope, Chris
Abstract	Software radio telescopes are a new development in radio astronomy. Rather than using expensive dishes, they form distributed sensor networks of tens of thousands of simple receivers. Signals are processed in software instead of custom-built hardware, taking advantage of the flexibility that software solutions offer. In turn, the data rates are high and the processing requirements challenging. GPUs and multi-core processors are promising devices to provide the required processing power. $LOFAR^{1},$ the largest radio telescope, is a prime example of a software radio telescope. In this paper, we discuss an optimized implementation of the polyphase filter bank used by LOFAR. We compare the following architectures: Intel Core i7, NVIDIA GTX580, ATI HD5870, and MicroGrid[7]. We present a novel way to compute polyphase filters efficiently on GPUs, and also discuss hardware limitations and energy efficiency.
Starting Page	33
Ending Page	40
Page Count	8
File Format	PDF
ISBN	9781450313384
DOI	10.1145/2286976.2286986
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2012-06-18
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Radio astronomy Microgrid Fir filter Lofar Digital signal processing Polyphase filter Opencl Cuda
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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