发明授权
- 专利标题： Orthogonal frequency division multiplexing access (OFDMA) ranging
- 专利标题（中）： 正交频分复用接入（OFDMA）范围
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申请号： US11531586申请日： 2006-09-13
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公开(公告)号： US07675888B2公开(公告)日： 2010-03-09
- 发明人: Cory S. Modlin , Tarik Muharemovic
- 申请人： Cory S. Modlin , Tarik Muharemovic
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 Steven A. Shaw; W. James Brady; Frederick J. Telecky, Jr.
- 主分类号： H04B7/216
- IPC分类号： H04B7/216 ; H04W4/00 ; H04B7/208 ; H04J11/00
摘要：
A method for Orthogonal Frequency Division Multiplexing Access (OFDMA) ranging is provided. The method includes receiving a signal having OFDMA symbols. An FFT is performed on this signal. Matching ranging codes are found. The power for a given hypothesized ranging code is determined and compared to a power threshold to determine if the code was transmitted. The timing offset and power are reported as the result of ranging.
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