Multiplex communications – Diagnostic testing – Determination of communication parameters
Reexamination Certificate
2007-12-25
2007-12-25
Ho, Duc (Department: 2616)
Multiplex communications
Diagnostic testing
Determination of communication parameters
C370S206000, C370S207000, C375S329000, C375S322000, C702S189000
Reexamination Certificate
active
10284644
ABSTRACT:
A receiver, an integrated circuit chip and a method are provided for estimating the power of a digitally modulated signal received by the receiver in a communication system. The method comprises determining in-phase and quadrature-phase values of a phase constellation system relating to the received signal, calculating at least one modified in-phase value and at least one modified quadrature-phase value relating to the phase constellation system rotated by a predetermined angle, and determining absolute values of the in-phase and quadrature-phase values and the modified in-phase and quadrature-phase values. The method further comprises identifying the maximum of the absolute values, and determining a power estimate of the received signal based on the identified maximum value. The provided technique may allow for estimating the power of a digitally modulated signal in a simple and less complex implementation.
REFERENCES:
patent: 6307898 (2001-10-01), Ido
patent: 6614806 (2003-09-01), Nanni
patent: 6856946 (2005-02-01), Dathe et al.
patent: 2006/0209982 (2006-09-01), De Gaudenzi et al.
patent: 94/18772 (1994-08-01), None
Dathe Lutz
Eggert Dietmer
Kluge Wolfram
Advanced Micro Devices , Inc.
Ho Duc
Kivlin B. Noäl
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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