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公开(公告)号：US20070224960A1
公开(公告)日：2007-09-27
申请号：US11750598
申请日：2007-05-18
IPC分类号： H04B1/06
CPC分类号： H03G3/3068 , H03D3/008 , H04B1/30 , H04L27/3809
摘要： A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a baseband signal; a second amplifier to amplify the baseband signal; a demodulator to demodulate the baseband signal amplified by said second amplifier; and a gain controller to control timing of a change in a gain of said second amplifier, in case that changing the gain of said first amplifier and the gain of said second amplifier, on the basis of a gain of said first amplifier before and after the change.
摘要翻译： 无线电接收机包括：放大接收的无线电信号的第一放大器; 正交解调器，用于解调由所述第一放大器放大的无线电信号，从而产生基带信号; 第二放大器，用于放大基带信号; 解调器，用于解调由所述第二放大器放大的基带信号; 以及增益控制器，用于在根据所述第一放大器的增益前后改变所述第一放大器的增益和所述第二放大器的增益的情况下，控制所述第二放大器的增益变化的定时 更改。
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公开(公告)号：US20120321006A1
公开(公告)日：2012-12-20
申请号：US13553047
申请日：2012-07-19
IPC分类号： H04L27/28
CPC分类号： H04L27/2657 , H04L27/2671 , H04L27/2675
摘要： According to one embodiment, a wireless transceiver system includes a transmitter and a receiver. The transmitter includes a first generator, a second generator, a third generator. The second generator generates fixed data item that has bit values corresponding to the clock signal. The third generator performs OFDM modulation for the fixed data item. The receiver includes a first detector, a second detector, a PLL, a controller. The first detector is configured to detect an envelope that indicates amplitude in a time waveform. The controller is configured to control to operate the PLL from a first time point when the head part is detected to a second time point when a first period is elapsed.
摘要翻译： 根据一个实施例，无线收发器系统包括发射机和接收机。 发射机包括第一发生器，第二发生器，第三发生器。 第二生成器生成具有对应于时钟信号的位值的固定数据项。 第三发生器对固定数据项执行OFDM调制。 接收机包括第一检测器，第二检测器，PLL，控制器。 第一检测器被配置为检测指示时间波形中的振幅的包络。 所述控制器被配置为当经过第一时间段时，从头部被检测到第一时间点的第一时间点来控制所述PLL的操作。
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