Detecting Linear Block Codes in Noise using the GLRT
  In this paper, we consider the problem of distinguishing the noisy codewords of a known binary linear block code from a random bit sequence. We propose to use the generalized likelihood ratio test (GLRT) to solve this problem. We also give a formula to find approximate number of codewords required and compare our results with an existing method. 
Arti D. Yardi, Saravanan Vijayakumaran
cs.IT math.IT