Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2008-01-29
2008-01-29
Pezzlo, John (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S342000, C370S479000, C375S142000, C375S150000
Reexamination Certificate
active
07324433
ABSTRACT:
The present invention is directed to a method, program product, and apparatus that determines a signal quality associated with a symbol modulated signal based on a scalar relationship based on at least one of a comparison of plural correlation candidates for a symbol in the modulated signal or a comparison of the vector corresponding to a decided symbol against a reference. In accordance with one aspect of the present invention, a method and apparatus are disclosed which involve determining maximum and next-maximum correlation candidates for a symbol perceived in the modulated signal, calculating the scalar relationship between the maximum and next-maximum correlation candidates, and deriving a signal quality associated with the modulated signal based on the scalar relationship. In accordance with another aspect of the present invention, a method and apparatus are disclosed which involve determining a decided symbol for the symbol perceived in the modulated signal, calculating a scalar relationship between a vector corresponding to the decided symbol and a reference, and deriving a signal quality associated with the modulated signal based on the scalar relationship. In accordance with either of these aspects, the derived signal quality can be used to alter one or more receiver characteristics of a receiver used to capture the modulated signal.
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Cheung Ricky
Hsu Yungping
Marvell International Ltd.
Pezzlo John
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