CDMA system using quasi-orthogonal codes

Details CDMA system using quasi-orthogonal codes CDMA system using quasi-orthogonal codes

2006-11-07

2006-11-07

Vu, Huy D. (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S203000, C370S320000, C370S335000, C370S342000

Reexamination Certificate

active

07133353

ABSTRACT:
A CDMA communication system uses a set of quasi-orthogonal codes to supplement the standard set of Walsh codes used in conventional systems. Users are assigned a code selected from the set of Walsh codes, if available. If the number of users exceeds the number of available Walsh codes, selected users are assigned to quasi-orthogonal codes. The users assigned quasi-orthogonal codes are chosen based on user mobility.

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