Atacama Compact Array Correlator for Atacama Large   Millimeter/submillimeter Array
  We have developed a FX-architecture digital spectro-correlator, Atacama Compact Array Correlator for the Atacama Large Millimeter/submillimeter Array. The ACA Correlator processes four pairs of dual polarization signals, whose bandwidth is 2 GHz, from up to sixteen antennas, and calculates auto- and cross-correlation spectra including cross-polarization in all combinations of sixteen antennas. We report the detailed design of the correlator and the verification results of the correlator hardware. 
Sachiko K. Okumura, Yoshihiro Chikada, Takeshi Kamazaki, Takeshi   Okuda, Yasutaka Kurono, and Satoru Iguchi
astro-ph.IM