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...

2007-06-05

2007-06-05

Trinh, Sonny (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

C455S139000, C455S067160

Reexamination Certificate

active

10919339

ABSTRACT:
A phase rotation unit rotates the phase of a digital received signal in accordance with a correction signal from a correction determination unit. An FWT computation unit subjects a CCK modulated signal to FWT computation and outputs Walsh transform values FWT. A maximum value searching unit receives Walsh transform values FWT and selects one of them by referring to the magnitude thereof. In accordance with the selected Walsh transform value FWT, the maximum value searching unit outputs a φ1signal and a φ component signal, the φ1signal corresponding to the signal prior to φ1differential detection and the φ component signal being a combination of φ2through φ4. A φ1demodulation unit subjects the φ1signal to differential detection so as to generate φ1. A second phase error detection unit56detects a phase error in accordance with an output signal from the φ1demodulation unit.

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