Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-11-15
2005-11-15
Liu, Shuwang (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S136000, C375S142000, C375S149000, C370S209000, C370S342000
Reexamination Certificate
active
06965633
ABSTRACT:
The invention discloses a pilot synchronization channel structure for mobile communication systems. The channel structure includes a pilot channel overlapping a synchronization channel (SCH), defined in the wideband code division multiple access (WCDMA) protocol. Each frame of the pilot channel consists of plural time slots. Each time slot is packed with pre-selected pilot symbols, after spread spectrum and scrambling. The overlap can be defined as search code of one symbol length with pilot signal of m−1 symbols length by intermittent overlap. The overlap can also be defined as search code of one symbol length with pilot signal of m symbols length by continuous overlap. The invention combines organically both CDMA 2000 and WCDMA standards to provide better pilot and synchronization functions.
REFERENCES:
patent: 5828662 (1998-10-01), Jalali et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 5991330 (1999-11-01), Dahlman et al.
patent: 6504830 (2003-01-01), Ostberg et al.
patent: 6526091 (2003-02-01), Nystrom et al.
patent: 6731673 (2004-05-01), Kotov et al.
patent: 1227993 (1999-09-01), None
International Search Report from corresponding International Application No. PCT/CN00/00219 dated Oct. 5, 2000.
Li Changzhu
Sun Ling
Alston & Bird LLP
Huawei Technologies Co. Ltd.
Liu Shuwang
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