Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-07-11
2006-07-11
Fan, Chieh M. (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S149000, C375S148000, C375S346000, C375S150000, C375S142000, C375S343000, C375S147000, C455S561000, C455S456100, C370S326000, C379S406080
Reexamination Certificate
active
07075974
ABSTRACT:
In a multi-path detection circuit for use in a CDMA communication system, a first peak is detected by searching a maximum value over a whole of data blocks composed of delay profile data. A second and the following peaks are detected by carrying out maximum value searching operation again only about a data block that is renewed in the delay profile data. As the remaining data blocks, a maximum value searched a previous time is preserved and used a next time and, therefore, reduction is possible in connection with the number of detection cycles necessary for detecting the second and the following peaks.
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Fan Chieh M.
Foley & Lardner LLP
NEC Corporation
Pathak Sudhanshu C.
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