Method and system for detecting adjacent channel...

Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform

Reexamination Certificate

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Details

C370S317000, C370S332000, C375S346000, C455S063100

Reexamination Certificate

active

07848221

ABSTRACT:
Disclosed are a method and system for detecting adjacent channel interference between two systems having neighboring frequencies. The method and system calculates a Fast Fourier Transform (FFT) output for one or more upper and lower frequency side null subcarriers and center data subcarriers of a frequency channel. Power values are calculated for the upper and lower frequency side null subcarriers and the center data subcarriers for use in determining a presence of adjacent channel interference (ACI).

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Choi, Jin Ho: “The International Search Report and The Written Opinion of the International Searching Authority”, Korean Intellectual Property Office, Daejeon, Republic of Korea, completed Jan. 21, 2010, mailed: Jan. 21, 2010, all pages.

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