gun55, array signal processing refers both to signal processing of an array of signals as it occurs in a multiple antenna situation, and to the mapping of such algorithms onto parallel hardware platforms. In other words it is a part of signal processing that uses sensors that are organized in arrays, to detect signals and to determine information about them.
From your title "wideband blind beamforming in array processing" i'm guessing you are looking for Matlab code on the application of blind adaptive algorithms using antenna arrays in Wideband CDMA.