Partial response signaling for orthogonal frequency division multiplexing
    1.
    发明授权
    Partial response signaling for orthogonal frequency division multiplexing 有权
    用于正交频分复用的部分响应信令

    公开(公告)号:US06999503B1

    公开(公告)日:2006-02-14

    申请号:US09704086

    申请日:2000-11-01

    申请人: Venkatesh Vadde

    发明人: Venkatesh Vadde

    IPC分类号: H04B1/38

    CPC分类号: H04L27/2602 H04L25/497

    摘要: The system includes a transmitter for generating a signal and a cyclic prefix, wherein the transmitter suppresses a plurality of sub-symbols of the signal to produce a partial response signal. A portion of the partial response signal is dropped and the resulting truncated signal is used to modulate a carrier signal. The carrier 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-symbols of the partial response signal, appending a cyclic prefix at a leading edge of the truncated partial response signal, and transforming the truncated partial response signal with the cyclic prefix to produce a time base signal that is used to generate a modulated carrier signal that is ready for transmission.

    摘要翻译: 该系统包括用于产生信号和循环前缀的发射机,其中发射机抑制信号的多个子符号以产生部分响应信号。 部分响应信号的一部分被丢弃,并且所得到的截断信号用于调制载波信号。 载波信号通过噪声信道发送到接收机。 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符号,在截断部分的前沿附加循环前缀 响应信号,并用循环前缀变换截断的部分响应信号,以产生用于产生准备传输的调制载波信号的时基信号。

    Envelope stabilization method and apparatus
    3.
    发明申请
    Envelope stabilization method and apparatus 有权
    信封稳定方法和装置

    公开(公告)号:US20060067414A1

    公开(公告)日:2006-03-30

    申请号:US11221511

    申请日:2005-09-08

    申请人: Venkatesh Vadde

    发明人: Venkatesh Vadde

    IPC分类号: H04K1/10

    摘要: A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged such that it is possible to stabilize the envelope at some constant value a, thus improving the PAPR without using excessive time-bandwidth resources.

    摘要翻译: 提出一种通过稳定信号包络来显着降低OFDM系统的峰均功率比(PAPR)的系统和方法。 通过使用部分响应(PR)信令来在多个子载波上扩展每个子符号,该信号首先被压缩。 然后将信号重新排列,使得可以将包络稳定在一定的值a,从而改善PAPR而不使用过多的时间带宽资源。

    Envelope stabilization method and apparatus

    公开(公告)号:US07126998B2

    公开(公告)日:2006-10-24

    申请号:US11221511

    申请日:2005-09-08

    申请人: Venkatesh Vadde

    发明人: Venkatesh Vadde

    IPC分类号: H04K1/10

    摘要: A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged such that it is possible to stabilize the envelope at some constant value α, thus improving the PAPR without using excessive time-bandwidth resources.

    Assembly, and associated method, for facilitating channel frequecy selection in a communication system utilizing a dynamic frequency selection scheme
    6.
    发明申请
    Assembly, and associated method, for facilitating channel frequecy selection in a communication system utilizing a dynamic frequency selection scheme 有权
    装配和相关联的方法,用于在利用动态频率选择方案的通信系统中促进频道频率选择

    公开(公告)号:US20050013275A1

    公开(公告)日:2005-01-20

    申请号:US10827899

    申请日:2004-04-20

    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。

    Assembly, and associated method, for facilitating channel frequency selection in a communication system utilizing a dynamic frequency selection scheme
    7.
    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:US07535868B2

    公开(公告)日:2009-05-19

    申请号:US10827899

    申请日:2004-04-20

    IPC分类号: H04Q7/00

    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。

    Setting the rotation speed of a rotating disk memory
    8.
    发明授权
    Setting the rotation speed of a rotating disk memory 有权
    设置旋转磁盘存储器的转速

    公开(公告)号:US07262929B2

    公开(公告)日:2007-08-28

    申请号:US10514085

    申请日:2003-04-15

    IPC分类号: G11B15/46

    CPC分类号: G11B19/26

    摘要: The invention relates to a device comprising a disk drive 1 for rotating a disk memory and at least one interface enabling a data flow between a rotating disk memory and at least one other module 10, 12. In order to enable a comfortable use of such a device, it is proposed that the device further comprises means 2 for setting the rotation speed of the disk drive 1 based on an indication of the data rate supported by an interface of the device, which interface is currently to be employed for enabling a data flow between the rotating disk memory and at least one other module 10, 12. The invention relates equally to a method setting the rotation speed of a disk drive 1 according to the capabilities of an interface enabling a data flow between a disk memory rotated by the disk drive 1 and another module 10, 12.

    摘要翻译: 本发明涉及一种包括用于旋转磁盘存储器的磁盘驱动器1和能够在旋转磁盘存储器与至少一个其它模块10,12之间进行数据流动的至少一个接口的装置。 为了能够舒适地使用这种装置,提出了该装置还包括用于基于设备的接口支持的数据速率的指示来设置磁盘驱动器1的转速的装置2,该接口 目前正被用来实现旋转盘存储器和至少一个其他模块10,12之间的数据流。 本发明同样地涉及根据能够使由盘驱动器1旋转的磁盘存储器与另一模块10,12之间的数据流的接口的能力来设定磁盘驱动器1的转速的方法。

    Envelope stabilization method and apparatus

    公开(公告)号:US07003025B2

    公开(公告)日:2006-02-21

    申请号:US09808564

    申请日:2001-03-14

    申请人: Venkatesh Vadde

    发明人: Venkatesh Vadde

    IPC分类号: H04L5/04

    摘要: A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged such that it is possible to stabilize the envelope at some constant value α, thus improving the PAPR without using excessive time-bandwidth resources.

    Setting the rotation speed of a rotating disk memory
    10.
    发明申请
    Setting the rotation speed of a rotating disk memory 有权
    设置旋转磁盘存储器的转速

    公开(公告)号:US20050240684A1

    公开(公告)日:2005-10-27

    申请号:US10514085

    申请日:2003-04-15

    IPC分类号: G11B19/26 G06F13/10

    CPC分类号: G11B19/26

    摘要: The invention relates to a device comprising a disk drive 1 for rotating a disk memory and at least one interface enabling a data flow between a rotating disk memory and at least one other module 10, 12. In order to enable a comfortable use of such a device, it is proposed that the device further comprises means 2 for setting the rotation speed of the disk drive 1 based on an indication of the data rate supported by an interface of the device, which interface is currently to be employed for enabling a data flow between the rotating disk memory and at least one other module 10, 12. The invention relates equally to a method setting the rotation speed of a disk drive 1 according to the capabilities of an interface enabling a data flow between a disk memory rotated by the disk drive 1 and another module 10, 12.

    摘要翻译: 本发明涉及一种包括用于旋转磁盘存储器的磁盘驱动器1和能够在旋转磁盘存储器与至少一个其它模块10,12之间进行数据流动的至少一个接口的装置。 为了能够舒适地使用这种装置,提出了该装置还包括用于基于设备的接口支持的数据速率的指示来设置磁盘驱动器1的转速的装置2,该接口 目前正被用来实现旋转盘存储器和至少一个其他模块10,12之间的数据流。 本发明同样地涉及根据能够使由盘驱动器1旋转的磁盘存储器与另一模块10,12之间的数据流的接口的能力来设定磁盘驱动器1的转速的方法。