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Method and apparatus for a single-path enhanced-algorithm digital automatic gain control integrated receiver with power management and XM interference enhancement
Method and apparatus for a single-path enhanced-algorithm digital automatic gain control integrated receiver with power management and XM interference enhancement
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机译:具有功率管理和XM干扰增强的单径增强算法数字自动增益控制集成接收机的方法和装置
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摘要
A single-path enhanced-algorithm digital automatic gain control (SDAGC) integrated receiver is presented. The SDAGC has a front-end RF/IF reception/processing block and associated RF/IF AGC, which outputs to a single ADC. Output from the ADC is split into two TDM and one COFDM signal pathways, each with a respective DAGC. The TDM DAGCs are controlled according to TDM post-power signals, while the COFDM, DAGC is controlled according to COFDM post- and pre-power signals. An IF Gain Decision block determines the RF/IF gain based upon the respective gains of the TDM and COFDM DAGCs. A Gain Distributor block then distributes the total gain of the system across the RF/IF AGC and the various DAGCs. To save power, the COFDM pathways may be disabled if the COFDM pre-power signal falls below a threshold value.
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机译:提出了一种单路径增强算法数字自动增益控制(SDAGC)集成接收器。 SDAGC具有一个前端RF / IF接收/处理模块和相关的RF / IF AGC,可将其输出到单个ADC。 ADC的输出分为两个TDM和一个COFDM信号路径,每个路径都有各自的DAGC。 TDM DAGC根据TDM后功率信号进行控制,而COFDM,DAGC根据COFDM后功率和前功率信号进行控制。 IF增益决策模块根据TDM和COFDM DAGC的相应增益确定RF / IF增益。然后,增益分配器模块在RF / IF AGC和各种DAGC之间分配系统的总增益。为了节省功率,如果COFDM预功率信号下降到阈值以下,则可以禁用COFDM路径。
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