Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2006-08-29
2010-06-29
Payne, David C (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S316000
Reexamination Certificate
active
07746960
ABSTRACT:
Provided are an apparatus and a method for compensating for an I/Q mismatch using a transmission signal in a wireless communication system. The apparatus includes a coupler, an FFT operator, and an I/Q mismatch estimator. The coupler couples the transmission signal and provides the coupled signal to a reception path, and the FFT operator performs FFT on the coupled transmission signal. The I/Q mismatch estimator estimates I/Q mismatch using a preamble of the FFT-performed transmission signal. The apparatus can compensate for I/Q mismatch in real-time. Since the FFT provided to a reception signal detection unit of a TDD OFDM receiver is used without the need for a separate algorithm for Fourier transform required during an I/Q mismatch estimation process of the conventional art, resources can be saved.
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Payne David C
Samsung Electronics Co,. Ltd
Stevens Brian J
The Farrell Law Firm, LLP
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