Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-02-22
2005-02-22
Corrielus, Jean B. (Department: 2637)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S224000, C375S285000
Reexamination Certificate
active
06859507
ABSTRACT:
A method of correcting a signal transmitted via a communications channel having signal channels carrying base band components which are phase-shifted relative to each other, the method comprising the steps of receiving known samples (TS) of the base band components (500); estimating first parameters (α, β), for correction of second samples, based on the first samples compared with expected first samples; and receiving and correcting second samples of a base band component (I;Q). The method is characterized in further comprising the steps of: estimating second parameters (H) that describe the communications channel (103); and correcting the second samples of the base band component based on the first and second parameters. This finds its application especially in conjunction with direct conversion or homodyne receivers (102; 201) for mobile telecommunications.
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Camp William O.
Lindoff Bengt
Corrielus Jean B.
Jenkens & Gilchrist P.C.
Telefonaktiebolaget L M Ericsson (PUBL)
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