发明授权
- 专利标题: Tracking automatic gain control of orthogonal frequency domain multiplexing systems
- 专利标题(中): 跟踪正交频域复用系统的自动增益控制
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申请号: US13169691申请日: 2011-06-27
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公开(公告)号: US08254503B1公开(公告)日: 2012-08-28
- 发明人: Jungwon Lee , Qing Zhao , Hui-Ling Lou
- 申请人: Jungwon Lee , Qing Zhao , Hui-Ling Lou
- 申请人地址: BM Hamilton
- 专利权人: Marvell International Ltd.
- 当前专利权人: Marvell International Ltd.
- 当前专利权人地址: BM Hamilton
- 主分类号: H04B14/06
- IPC分类号: H04B14/06 ; H04L27/28
摘要:
An automatic gain control tracking system including a variable gain amplifier and an automatic gain control module. The variable gain amplifier is configured to amplify an input signal in accordance with a first gain, in which i) the input signal comprises a plurality of orthogonal frequency domain multiplexing (OFDM) symbols, and ii) each of the plurality of orthogonal frequency domain multiplexing (OFDM) symbols in the input signal is preceded by a respective cyclic prefix. The automatic gain control module configured to vary the first gain of the variable gain amplifier during the respective cyclic prefix preceding each of the plurality of orthogonal frequency domain multiplexing (OFDM) symbols in the input signal.
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