Procedure for the recognition of active code sequences

Details Procedure for the recognition of active code sequences Procedure for the recognition of active code sequences

2007-08-14

2007-08-14

Nguyen, Chau (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C370S335000

Reexamination Certificate

active

10210810

ABSTRACT:
A procedure for determining active code sequences of a plurality of overlaid code sequences (ca(v)·ga), wherein the active code sequences have a greater gain factor (ga) than the inactive code sequences, includes: (1) formation of a cost function (L) dependent upon unknown estimated values ({tilde over (g)}a,ĝa) of the gain factors (ga) of composite code sequences (ca(v)·ga), (2) partial differentiation of the cost function (L) in accord with the unknown estimated values ({tilde over (g)}aĝa) of the gain factors (ga), (3) formation of an equation system from the presupposition that all partial differentials of the cost function (L) are zero and a minimum of the cost function (L) is present, (4) determination of the estimated values ({tilde over (g)}, ĝa) of the gain factors (ga) by solving the equation system, and (5) determining that an active code sequence exists, if the estimated values ({tilde over (g)}a, ĝa) of the corresponding gain factors (ga) are greater than a specified threshold value.

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