detection and identification of known sequences such as sequences composed of walsh - hadamard sequence and scrambling sequence are provided in a fast fading and frequency offset environment using a segmented correlator and fht architecture with frequency offset compensation . the incoming sequence of samples or data is segmented into blocks . each block is individually detected using a correlator / fht segment . each sequence identifying output of each correlator / fht segment is multiplied by a sinusoid for frequency offset compensation . the frequency offset compensated output from each correlator / fht segment is summed with the corresponding frequency offset compensated output of other correlator / fht segments . each sum is compared with a threshold to determine whether a particular sequence has been detected and identified .