Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prototyping scalable digital signal processing systems for radio
  astronomy using dataflow models   There is a growing trend toward using high-level tools for design and
implementation of radio astronomy digital signal processing (DSP) systems. Such
tools, for example, those from the Collaboration for Astronomy Signal
Processing and Electronics Research (CASPER), are usually platform-specific,
and lack high-level, platform-independent, portable, scalable application
specifications. This limits the designer's ability to experiment with designs
at a high-level of abstraction and early in the development cycle.
  We address some of these issues using a model-based design approach employing
dataflow models. We demonstrate this approach by applying it to the design of a
tunable digital downconverter (TDD) used for narrow-bandwidth spectroscopy. Our
design is targeted toward an FPGA platform, called the Interconnect Break-out
Board (IBOB), that is available from the CASPER. We use the term TDD to refer
to a digital downconverter for which the decmation factor and center frequency
can be reconfigured without the need for regenerating the hardware code. Such a
design is currently not available in the CASPER DSP library.
  The work presented in this paper focuses on two aspects. Firstly, we
introduce and demonstrate a dataflow-based design approach using the dataflow
interchange format (DIF) tool for high-level application specification, and we
integrate this approach with the CASPER tool flow. Secondly, we explore the
trade-off between the flexibility of TDD designs and the low hardware cost of
fixed-configuration digital downconverter (FDD) designs that use the available
CASPER DSP library. We further explore this trade-off in the context of a
two-stage downconversion scheme employing a combination of TDD or FDD designs.

31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th