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发明公开
CN109525264A 用于AM无线电的自适应信号压缩器 有权 转让

用于AM无线电的自适应信号压缩器
摘要：
本发明公开了一种接收器，其包括压缩因子产生器，其被配置为基于数字解调的接收信号、信号质量估计、高调制电平和低调制电平生成压缩增益信号。接收器包括增益电路，该增益电路被配置为将压缩增益信号施加到数字解调的接收信号。压缩因子产生器可以包括峰值追踪滤波器，其被配置为基于数字解调的接收信号和滤波器配置信息生成峰值追踪信号。压缩因子产生器可以包括压缩阈值产生器，其被配置为基于峰值追踪信号、信号质量估计、高调制电平和低调制电平生成调制指数。压缩因子产生器可以包括压缩曲线和增益压缩保持和恢复处理器。
摘要（英）：

A receiver includes a compressive factor generator configured to generate a compressive gain signal based on a digital demodulated received signal, a signal quality estimate, an upper modulation level, and a lower modulation level. The receiver includes a gain circuit configured to apply the compressive gain signal to the digital demodulated received signal. The compressive factor generator may include a peak tracking filter configured to generate a peak tracking signal based on the digital demodulated received signal and filter configuration information. The compressive factor generator may include a compression threshold generator configured to generate a modulation index based on the peak tracking signal, the signal quality estimate, the upper modulation level, and the lower modulationlevel. The compressive factor generator may include a compression curve and a gain compression hold and recovery processor.

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