Method and apparatus for assigning Walsh codes

Details Method and apparatus for assigning Walsh codes Method and apparatus for assigning Walsh codes

2006-06-13

2006-06-13

Tran, Khai (Department: 2637)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S130000, C375S141000, C370S208000, C370S209000

Reexamination Certificate

active

07061965

ABSTRACT:
A Walsh code assigning apparatus includes a retaining unit retaining assignment order information about an order of assignment of the plural Walsh codes such that one Walsh code having a smaller bit length becomes unable to he orthogonally separated as being precedent over another Walsh code having a larger bit length and a controller including a retrieving unit retrieving an idle Walsh code having an assignment request bit length in accordance with the assignment order information retained in the retaining unit, and assigning unit assigning the idle Walsh code, which has been obtained by the retrieving unit, to the spreading code of a last-named communication channel for which the assignment request is issued.

REFERENCES:
patent: 5204876 (1993-04-01), Bruckert et al.
patent: 6041034 (2000-03-01), Fukumasa et al.
patent: 6173005 (2001-01-01), Kotzin et al.
patent: 6646979 (2003-11-01), Chen et al.
patent: 10-190520 (1998-07-01), None
patent: 2000-232432 (2000-08-01), None

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