A GPU-Based Wide-Band Radio Spectrometer

Abstract

The Graphics Processing Unit (GPU) has become an integral part of astronomical instrumentation, enabling high-performance online data reduction and accelerated online signal processing. In this paper, we describe a wide-band reconfigurable spectrometer built using an off-the-shelf GPU card. This spectrometer, when configured as a polyphase filter bank (PFB), supports a dual-polarization bandwidth of up to 1.1 GHz (or a single-polarization bandwidth of up to 2.2 GHz) on the latest generation of GPUs. On the other hand, when configured as a direct FFT, the spectrometer supports a dual-polarization bandwidth of up to 1.4 GHz (or a single-polarization bandwidth of up to 2.8 GHz).

arXiv comment5 pages, 3 figures, Accepted for publication in PASA

References in corpus (2)

• Accelerating incoherent dedispersion
• Real-time, fast radio transient searches with GPU de-dispersion

Cited by in corpus (6)

• HIPSR: A Digital Signal Processor for the Parkes 21-cm Multibeam Receiver
• An International Survey of Front-End Receivers and Observing Performance of Telescopes for Radio Astronomy
• A polyphase filter for many-core architectures
• Introduction to the Special Issue on Digital Signal Processing in Radio Astronomy
• Observational demonstration of a low-cost fast Fourier transform spectrometer with a delay-line-based ramp-compare ADC implemented on FPGA
• Efficient channelization on a Graphics Processing Unit