Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-07-17
2007-07-17
Pham, Chi (Department: 2616)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S441000
Reexamination Certificate
active
09945483
ABSTRACT:
A method of increasing utilization of user link bandwidth for a code division multiple access communications system is disclosed that includes the steps of selecting a set of orthogonal complex codes each having a code length that is greater than a code length of an optimum real code and less than or equal to a spreading code length; and transferring symbols across at least one of a plurality of user links to or from at least one of a corresponding plurality of user terminals wherein the symbols are represented by a corresponding one of the set of orthogonal complex codes.
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Chang Donald C. D.
Chang Ming U.
Feria Ying J.
Grunebach Georgann S.
Ly Anh-Vu
Pham Chi
The DirectTV Group, Inc.
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