FEEDBACK SHIFT REGISTER SEQUENCES VERSUS UNIFORMLY DISTRIBUTED RANDOMSEQUENCES FOR CORRELATION CHROMATOGRAPHY

Two alternative input sequences are commonly employed in correlation c hromatography (CC). They are sequences derived according to the algori thm of the feedback shift register (i.e., pseudo random binary sequenc es (PRBS)) and sequences derived by using the uniform random binary se quences (URBS). These two sequences are compared. By applying the ''cl eaning'' data processing technique to the correlograms that result fro m these sequences, we show that when the PRBS is used the S/N of the c orrelogram is much higher than the one resulting from using URBS.