This document summarizes the implementation of pseudorandom binary sequences (PRBS), specifically maximal length sequences (MLS), for CDMA2000 using MATLAB Simulink. It discusses the properties of MLS, including their use as spreading codes in 2G and 3G standards. The autocorrelation and cross correlation properties of MLS are studied through simulation and verification. Implementation of a 42-stage MLS generator according to the CDMA2000 polynomial is presented.