Multiplex communications – Generalized orthogonal or special mathematical techniques – Fourier transform
Reexamination Certificate
2008-07-14
2010-12-07
Phan, Tri H (Department: 2471)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Fourier transform
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.
Cai Ying
Chen Xiang
Ding Peilu
Jin Xiaowei
Moorut Ravindra P.
Motorola Mobility, Inc.
Phan Tri H
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