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    • 4. 发明授权
    • Automatic gain control for frequency-hopped OFDM
    • 跳频OFDM自动增益控制
    • US08254480B2
    • 2012-08-28
    • US13044157
    • 2011-03-09
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • H04K1/10H04L27/28
    • H04L27/2601H03G3/3068H04B1/71637H04L27/2647
    • An automatic gain control method and system for use in signal processing of OFDM symbols at a receiver. Two stages of coarse and fine automatic gain control are implemented that adjust different gains in an analog RF processing stage of the receiver. Gain of a low noise amplifier and a mixer are adjusted during a first and coarse automatic gain control stage based on feedback from a digital baseband stage. During a subsequent fine gain control period, the gain of a programmable gain amplifier is adjusted separately for each frequency band used by the OFDM symbols based on a histogram bin that counts the number of output samples of an analog to digital converter whose magnitude falls within certain ranges. Coarse and fine gains are updated after each OFDM symbol.
    • 一种用于在接收机处对OFDM符号进行信号处理的自动增益控制方法和系统。 实现两级粗略和精细的自动增益控制,可在接收机的模拟RF处理阶段调整不同的增益。 基于来自数字基带级的反馈,在第一和粗略的自动增益控制级中调整低噪声放大器和混频器的增益。 在随后的精细增益控制周期期间,可编程增益放大器的增益分别针对由OFDM符号使用的每个频带进行调整,所述频带基于对其幅度在一定范围内的模数转换器的输出样本数进行计数的直方图单元 范围。 在每个OFDM符号之后更新粗和细增益。
    • 6. 发明授权
    • Automatic gain control for frequency-hopped OFDM
    • 跳频OFDM自动增益控制
    • US07916798B2
    • 2011-03-29
    • US11506754
    • 2006-08-18
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • H04K1/10H04L27/28
    • H04L27/2601H03G3/3068H04B1/71637H04L27/2647
    • An automatic gain control method and system for use in signal processing of OFDM symbols at a receiver. Two stages of coarse and fine automatic gain control are implemented that adjust different gains in an analog RF processing stage of the receiver. Gain of a low noise amplifier and a mixer are adjusted during a first and coarse automatic gain control stage based on feedback from a digital baseband stage. During a subsequent fine gain control period, the gain of a programmable gain amplifier is adjusted separately for each frequency band used by the OFDM symbols based on a histogram bin that counts the number of output samples of an analog to digital converter whose magnitude falls within certain ranges. Coarse and fine gains are updated after each OFDM symbol.
    • 一种用于在接收机处对OFDM符号进行信号处理的自动增益控制方法和系统。 实现两级粗略和精细的自动增益控制,可在接收机的模拟RF处理阶段调整不同的增益。 基于来自数字基带级的反馈,在第一和粗略的自动增益控制级中调整低噪声放大器和混频器的增益。 在随后的精细增益控制周期期间,可编程增益放大器的增益针对OFDM符号使用的每个频带单独调整,该直方图单元基于对模数转换器的输出样本的数量进行计数,该模数转换器的幅度在一定范围内 范围。 在每个OFDM符号之后更新粗和细增益。
    • 7. 发明授权
    • Automatic gain control for frequency-hopped OFDM
    • 跳频OFDM自动增益控制
    • US08416870B2
    • 2013-04-09
    • US13372577
    • 2012-02-14
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • Turgut AyturStephan ten BrinkRavishankar H. MahadevappaRan Yan
    • H04K1/10H04L27/28
    • H04L27/2601H03G3/3068H04B1/71637H04L27/2647
    • An automatic gain control method and system for use in signal processing of OFDM symbols at a receiver. Two stages of coarse and fine automatic gain control are implemented that adjust different gains in an analog RF processing stage of the receiver. Gain of a low noise amplifier and a mixer are adjusted during a first and coarse automatic gain control stage based on feedback from a digital baseband stage. During a subsequent fine gain control period, the gain of a programmable gain amplifier is adjusted separately for each frequency band used by the OFDM symbols based on a histogram bin that counts the number of output samples of an analog to digital converter whose magnitude falls within certain ranges. Coarse and fine gains are updated after each OFDM symbol.
    • 一种用于在接收机处对OFDM符号进行信号处理的自动增益控制方法和系统。 实现两级粗略和精细的自动增益控制,可在接收机的模拟RF处理阶段调整不同的增益。 基于来自数字基带级的反馈,在第一和粗略的自动增益控制级中调整低噪声放大器和混频器的增益。 在随后的精细增益控制周期期间,可编程增益放大器的增益分别针对由OFDM符号使用的每个频带进行调整,所述频带基于对其幅度在一定范围内的模数转换器的输出样本数进行计数的直方图单元 范围。 在每个OFDM符号之后更新粗和细增益。