Method and system for radio frequency (RF) group delay...

Details Method and system for radio frequency (RF) group delay... Method and system for radio frequency (RF) group delay...

2011-03-15

2011-03-15

Pham, Chi H (Department: 2471)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C370S204000, C370S205000, C375S371000

Reexamination Certificate

active

07907909

ABSTRACT:
A radio device operable to compensate for a large RF filter group delay variation is provided. The radio device includes a receiving unit operable to receive an OFDM signal that comprises pilot subcarrier signals and data subcarrier signals. The radio device further includes a group delay (GD) compensator, operable in frequency domain, and configured to perform phase rotation to correct a group delay individually on tones of an OFDM symbol. The phase rotation is calculated as a function of the phase shifts of the received pilot subcarrier signals and subcarrier index.

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Ha, Eu Ju: “The International Search Report and The Written Opinion of the International Searching Authority”, Korean Intellectual Property Office, Daejeon, completed: Mar. 12, 2010, mailed: Mar. 15, 2010, all pages.

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