The Murchison Widefield Array Correlator. - Stephen M. Ord; Brian Crosse; David Emrich; Dave Pallot; Randall B. Wayth; Michael A. Clark; Steven E. Tremblay; Wayne Arcus; David Barnes; Martin E. Bell; Gianni Bernardi; N. D. Ramesh Bhat; et al. (CoRR, 2015)