Patent ID: 7245599
Filing Date: 2007-07-17
Classification: H04B,H04J

Abstract:
1. A method of optimizing utilization of user link bandwidth for a code division multiple access communications system comprising the steps of: selecting a set of orthogonal complex codes, an optimum real code, and a spreading code, each of the set of orthogonal complex codes, the optimum real code, and the spreading code being associated with each of the others and each of the set of orthogonal complex codes, the optimum real code, and the spreading code being related to a value n, the value n being an integer and being the same for each of the codes, the value n being related to a code length for each of the set of orthogonal complex codes, the optimum real code, and the spreading code; selecting a code length for the set of orthogonal complex codes that is greater than a code length of the associated optimum real code and less than or equal to a code length of the associated spreading code, the length of the set of orthogonal complex codes being chosen so that utilization of a bandwidth of at least one of a plurality of user links is optimized; and transferring symbols across the at least one of a plurality of user links to or from at least corresponding one of a plurality of user terminals wherein the symbols are represented by a corresponding one of the set of orthogonal complex codes.