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16 条记录 (耗时 0.022 秒)

    Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
    12.
    发明授权
    Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers 失效
    用于具有恒定包络功率放大器的多载波信号的离散功率合成的方法和装置

    公开(公告)号：US07539269B2

    公开(公告)日：2009-05-26

    申请号：US10567629

    申请日：2004-08-06

    申请人： Venkatesh Vadde ,  Kiran Kuchi

    发明人： Venkatesh Vadde ,  Kiran Kuchi

    IPC分类号： H04L27/00 ,  H04K1/02

    CPC分类号： H03F1/0294 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/451 ,  H04L27/2614 ,  H04W52/04

    摘要： A power synthesizer is in several (n) discrete stages, each stage having a discrete amplitude, constant envelope amplifier coupled in series with a continuous phase modulator. Each modulator is actuated simultaneously, but not necessarily to modulate the signal phase similarly. For circuit power combining, the modulators are coupled to inputs of the amplifiers, while the separately modulated and amplified bits are combined prior to being fed to the antenna. For spatial power combining, each modulator is coupled to the input of an amplifier which in turn feeds one of several antennas. Each stage operates on one bit, and each successive nth stage amplifies the input bit by a factor of a0/2n−1. Preferably, a discrete amplitude generator converts an (analog) output of an IFFT block to a binary sequence, and each bit is fed to a separate stage. The power synthesizer converts a digital output of the discrete amplitude generator to analog at RF rather than at baseband, rendering a baseband DAC, and a separate upconverter, unnecessary.

    摘要翻译： 功率合成器在几个（n）个分立级中，每个级具有与连续相位调制器串联耦合的离散振幅恒定包络放大器。 每个调制器同时启动，但不一定要类似地调制信号相位。 对于电路功率组合，调制器耦合到放大器的输入，而单独调制和放大的比特在被馈送到天线之前被组合。 对于空间功率组合，每个调制器耦合到放大器的输入端，放大器又输入几个天线之一。 每一级按一位操作，并且每个连续的第n级将输入位放大a0 / 2n-1的因子。 优选地，离散振幅发生器将IFFT块的（模拟）输出转换为二进制序列，并且将每个比特馈送到单独的级。 功率合成器将离散振幅发生器的数字输出转换为RF而不是基带的模拟，从而形成基带DAC和单独的上变频器。

    Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
    13.
    发明申请
    Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers 失效
    用于具有恒定包络功率放大器的多载波信号的离散功率合成的方法和装置

    公开(公告)号：US20070098109A1

    公开(公告)日：2007-05-03

    申请号：US10567629

    申请日：2004-08-06

    申请人： Venkatesh Vadde ,  Kiran Kuchi

    发明人： Venkatesh Vadde ,  Kiran Kuchi

    IPC分类号： H04L25/49 ,  H04L27/04 ,  H04K1/10

    CPC分类号： H03F1/0294 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/451 ,  H04L27/2614 ,  H04W52/04

    摘要： A power synthesizer is in several (n) discrete stages, each stage having a discrete amplitude, constant envelope amplifier coupled in series with a continuous phase modulator. Each modulator is actuated simultaneously, but not necessarily to modulate the signal phase similarly. For circuit power combining, the modulators are coupled to inputs of the amplifiers, while the separately modulated and amplified bits are combined prior to being fed to the antenna. For spatial power combining, each modulator is coupled to the input of an amplifier which in turn feeds one of several antennas. Each stage operates on one bit, and each successive nth stage amplifies the input bit by a factor of a0/2n-1. Preferably, a discrete amplitude generator converts an (analog) output of an IFFT block to a binary sequence, and each bit is fed to a separate stage. The power synthesizer converts a digital output of the discrete amplitude generator to analog at RF rather than at baseband, rendering a baseband DAC, and a separate upconverter, unnecessary.

    摘要翻译： 功率合成器在几个（n）个分立级中，每个级具有与连续相位调制器串联耦合的离散振幅恒定包络放大器。 每个调制器同时启动，但不一定要类似地调制信号相位。 对于电路功率组合，调制器耦合到放大器的输入，而单独调制和放大的比特在被馈送到天线之前被组合。 对于空间功率组合，每个调制器耦合到放大器的输入端，放大器又输入几个天线之一。 每一级按一位操作，并且每个连续的第n级/ SUP级将输入位放大a0 / 2-n-1的因子。 优选地，离散振幅发生器将IFFT块的（模拟）输出转换为二进制序列，并且将每个比特馈送到单独的级。 功率合成器将离散振幅发生器的数字输出转换为RF而不是基带的模拟，从而形成基带DAC和单独的上变频器。

    Frequency domain partial response signaling with high spectral efficiency and low peak to average power ratio
    14.
    发明授权
    Frequency domain partial response signaling with high spectral efficiency and low peak to average power ratio 有权
    频域部分响应信号具有高频谱效率和低峰均功率比

    公开(公告)号：US07173961B2

    公开(公告)日：2007-02-06

    申请号：US10793017

    申请日：2004-03-03

    申请人： Venkatesh Vadde

    发明人： Venkatesh Vadde

    IPC分类号： H04B1/38 ,  H04L27/28

    CPC分类号： H04L27/2602 ,  H04L25/03159 ,  H04L25/497 ,  H04L27/2614 ,  H04L2025/03414

    摘要： The system includes a transmitter for generating a signal in the time domain and transforming the signal to the frequency domain, wherein the transmitter suppresses a plurality of sub-carriers of the signal, The resulting truncated signal is transmitted to the receiver through a noisy channel. The receiver receives a noisy signal and recovers the carrier signal and, hence, the partial response signal from the noisy signal. The method includes selecting a cyclic convolver having predefined values, applying the cyclic convolver to a signal to produce a partial response signal, dropping a plurality of sub-carriers of the partial response signal, to generate a modulated carrier signal that is ready for transmission.

    摘要翻译： 该系统包括用于在时域中产生信号并将信号变换到频域的发射机，其中发射机抑制信号的多个子载波。所产生的截断的信号通过噪声信道被发送到接收机。 接收机收到噪声信号，并恢复载波信号，从而收到来自噪声信号的部分响应信号。 该方法包括选择具有预定义值的循环卷积器，将该循环卷积器应用于信号以产生部分响应信号，丢弃部分响应信号的多个子载波，以产生准备传输的调制载波信号。

    Assembly, and associated method, for facilitating channel frequency selection in a communication system utilizing a dynamic frequency selection scheme
    16.
    发明授权
    Assembly, and associated method, for facilitating channel frequency selection in a communication system utilizing a dynamic frequency selection scheme 有权
    装配和相关联的方法，用于利用动态频率选择方案在通信系统中促进信道频率选择

    公开(公告)号：US06738599B2

    公开(公告)日：2004-05-18

    申请号：US10097977

    申请日：2002-03-14

    申请人： Simon A. Black ,  Steven Gray ,  Venkatesh Vadde

    发明人： Simon A. Black ,  Steven Gray ,  Venkatesh Vadde

    IPC分类号： H04B1700

    CPC分类号： H04W72/02 ,  H04W84/12 ,  H04W84/18

    摘要： An assembly, and an associated method, for an ad hoc network, such as an independent basic service set defined in an IEEE 802.11 protocol specification. A channel map is created and maintained at each mobile station of the ad hoc network. The channel map is populated with channel characteristic indicia of channel frequencies that might be available upon which to be used in the ad hoc network to effectuate communications between the mobile stations. Information related to the channel map created and maintained at each of the mobile stations is exchanged, and any of the mobile stations is selectable to form a DFS owner that defines the channel frequency to be used upon which to define a communication channel for communications in the network.

    摘要翻译： 用于诸如IEEE 802.11协议规范中定义的独立基本服务集的自组织网络的组件和相关联的方法。 在自组织网络的每个移动站处创建和维护频道映射。 信道图填充有可能在ad hoc网络中使用的信道频率的信道特征标记，以实现移动站之间的通信。 与每个移动站创建和维护的信道映射相关的信息被交换，并且可以选择任何移动站来形成DFS所有者，该DFS所有者定义要在其中定义用于通信的通信信道的信道频率 网络。