Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2006-07-11
2006-07-11
Ngo, Ricky Q. (Department: 2663)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S208000, C370S320000, C370S335000, C370S342000
Reexamination Certificate
active
07075885
ABSTRACT:
Modulation codes for code division multiple access (CDMA) cellular communications systems that are mutually orthogonal may be generated as a sequence of Walsh codes. A method of assigning Walsh codes includes the steps of (404) receiving as input a status vector (200) for a Walsh code system of length 2nand a selected Walsh code length j=2n−k; (406)–(418) creating a new status vector for a selected Walsh code length of j from the status vector; (416) creating a search mask for the selected Walsh code length j; (418) creating a search sequence for the selected Walsh code length j; and (434)–(442) searching the search sequence for the next available Walsh code. The status vector is updated (500) to track the assignment and release of each Walsh code of each Walsh code length in the Walsh code system.
REFERENCES:
patent: 5353352 (1994-10-01), Dent et al.
patent: 5751761 (1998-05-01), Gilhousen
patent: 6163524 (2000-12-01), Magnusson et al.
patent: 6526091 (2003-02-01), Nystrom et al.
patent: 6724738 (2004-04-01), Storm et al.
patent: 2001/0046205 (2001-11-01), Easton et al.
patent: 2002/0146059 (2002-10-01), Kodani et al.
patent: 0 994 593 (2000-04-01), None
patent: WO 95/03652 (1995-02-01), None
Declerck Daniel J.
Thorson Dean E.
Anolick Simon B.
Liou Jonathan
Motorola Inc.
Ngo Ricky Q.
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