Receiving method and receiver with high-precision signal...

Details Receiving method and receiver with high-precision signal... Receiving method and receiver with high-precision signal...

2008-07-01

2008-07-01

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S316000, C375S340000

Reexamination Certificate

active

11086315

ABSTRACT:
A second phase rotation unit rotates a signal equalized by an equalizer by a phase error detected by a second phase error detection unit. A decision unit partitions a phase plane into a plurality of sub-areas in accordance with phases to which CCK modulated signals are assigned. The decision unit identifies a sub-area corresponding to an output signal from the second phase rotation unit, and thereby converts the output signal from the second phase rotation unit into a value corresponding to the identified sub-area. An FWT transform unit subjects the value resulting from conversion in the decision unit to FWT computation so as to output a Walsh transform value FWT. A maximum value searching unit receives 64 Walsh transform values FWT and selects one Walsh transform value by referring to the magnitude thereof.

REFERENCES:
patent: 6487236 (2002-11-01), Iwamatsu et al.
patent: 6693954 (2004-02-01), King et al.
patent: 2003-168999 (2003-06-01), None

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