Inventors:
Jung Ah Lee - Pittstown NJ
Steven Andrew Wood - Hotwells, GB
Gregory J Wroclawski - Kinnelon NJ
Woodson Dale Wynn - Basking Ridge NJ
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H04L 2730
US Classification:
375142, 375143, 375150, 375152, 375343
Abstract:
Known sequences are detected and identified in a fast fading environment using a segmented correlator and FHT (Fast Hadamard Transform) architecture. 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 summed with the corresponding output of other correlator/FHT segments. Each sum is compared with a threshold to determine whether a particular sequence has been detected and identified.