# HIPSR: A Digital Signal Processor for the Parkes 21-cm Multibeam Receiver

## TL;DR

HIPSR is a versatile digital signal processing system that enhances bandwidth, resolution, and real-time detection capabilities for radio astronomy observations at Parkes, supporting advanced pulsar and transient surveys.

## Contribution

It introduces a heterogeneous FPGA-GPU architecture enabling higher bandwidth and spectral resolution for 21-cm observations and real-time FRB detection.

## Key findings

- Supports wider bandwidth and higher spectral resolution.
- Enables real-time detection of Fast Radio Bursts.
- Improves pulsar survey data processing.

## Abstract

HIPSR (HI-Pulsar) is a digital signal processing system for the Parkes 21-cm Multibeam Receiver that provides larger instantaneous bandwidth, increased dynamic range, and more signal processing power than the previous systems in use at Parkes. The additional computational capacity enables finer spectral resolution in wideband HI observations and real-time detection of Fast Radio Bursts during pulsar surveys. HIPSR uses a heterogeneous architecture, consisting of FPGA-based signal processing boards connected via high-speed Ethernet to high performance compute nodes. Low-level signal processing is conducted on the FPGA-based boards, and more complex signal processing routines are conducted on the GPU-based compute nodes. The development of HIPSR was driven by two main science goals: to provide large bandwidth, high-resolution spectra suitable for 21-cm stacking and intensity mapping experiments; and to upgrade the Berkeley-Parkes-Swinburne Recorder (BPSR), the signal processing system used for the High Time Resolution Universe (HTRU) Survey and the Survey for Pulsars and Extragalactic Radio Bursts (SUPERB).