Invention Grant
US07848221B2 Method and system for detecting adjacent channel interference from OFDM/OFDMA based broadband wireless access
有权
用于从基于OFDM / OFDMA的宽带无线接入检测相邻信道干扰的方法和系统
- Patent Title: Method and system for detecting adjacent channel interference from OFDM/OFDMA based broadband wireless access
- Patent Title (中): 用于从基于OFDM / OFDMA的宽带无线接入检测相邻信道干扰的方法和系统
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Application No.: US12172462Application Date: 2008-07-14
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Publication No.: US07848221B2Publication Date: 2010-12-07
- Inventor: Peilu Ding , Ying Cai , Xiang Chen , Xiaowei Jin , Ravindra P. Moorut
- Applicant: Peilu Ding , Ying Cai , Xiang Chen , Xiaowei Jin , Ravindra P. Moorut
- Applicant Address: US IL Libertyville
- Assignee: Motorola Mobility, Inc.
- Current Assignee: Motorola Mobility, Inc.
- Current Assignee Address: US IL Libertyville
- Main IPC: H04J11/00
- IPC: H04J11/00 ; H04B7/185 ; H04B1/10 ; H04B15/00 ; H04W4/00
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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