Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2006-10-17
2006-10-17
Gesesse, Tilahun (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C370S503000, C370S509000, C375S354000
Reexamination Certificate
active
07123929
ABSTRACT:
Once slot synchronization has been obtained in a first step, during a second step there is acquired, by means of correlation of the received signal (r) with the synchronization codes, the information corresponding to the codegroup and to the fine slot synchronization. The synchronization codes are split into codesets. In a first step, a synchronization code identifying a corresponding codeset (CS) is identified by means of correlation and search for the maximum value of correlation energy. In a second step, the received signal (r) is correlated with the remaining codes belonging to the codeset identified. The information thus obtained, which corresponds to all the synchronization codes comprised in the codeset identified, is used for obtaining frame synchronization and codegroup identification. Preferential application is in mobile communication systems based upon standards, such as UMTS, CDMA2000, IS95 or WBCDMA.
REFERENCES:
patent: 4636583 (1987-01-01), Bidell et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6625200 (2003-09-01), Dent
patent: 2003/0156574 (2003-08-01), Raaf
patent: 1 154 662 (2001-11-01), None
patent: WO 00/74276 (2000-12-01), None
Avellone Giuseppe
Galluzzo Agostino
Pappalardo Francesco
Rimi Francesco
Visalli Giuseppe
Gesesse Tilahun
Hogan & Hartson L.L.P.
STMicroelectronics S.R.L.
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