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    Method and apparatus for mobile data communication
    13.
    发明授权
    Method and apparatus for mobile data communication 有权
    移动数据通信的方法和装置

    公开(公告)号：US06208669B1

    公开(公告)日：2001-03-27

    申请号：US09210686

    申请日：1998-12-15

    申请人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    发明人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    IPC分类号： H04J312

    CPC分类号： H04L1/0057 ,  H04B7/0613 ,  H04B7/0837 ,  H04L1/04 ,  H04L1/06 ,  H04L1/08 ,  H04L27/2602 ,  H04L27/2626

    摘要： A high-speed wireless transmission system is employable in a macro-cellular environment. In the system multiple transmit antennas are employed. Multiple carrier tones are used to transmit the data. The carrier tones can be assigned to the respective transmit antennas in such a manner as to provide each antenna with a subset of carrier tones with each subset being spread over the transmission spectrum. In addition, operation is enhanced by providing Reed-Solomon coding of the data across consecutive time intervals.

    摘要翻译： 高速无线传输系统可以在宏蜂窝环境中使用。 在该系统中，采用多个发射天线。 使用多载波音调传输数据。 可以以这样的方式将载波音调分配给相应的发射天线，以便为每个天线提供载波音调的子集，其中每个子集分布在传输频谱上。 此外，通过在连续的时间间隔内提供数据的Reed-Solomon编码来增强操作。

    Method and system for reduction of peak-to-average power ratio of transmission signals comprising overlapping waveforms
    16.
    发明授权
    Method and system for reduction of peak-to-average power ratio of transmission signals comprising overlapping waveforms 有权
    用于降低包括重叠波形的传输信号的峰值与平均功率比的方法和系统

    公开(公告)号：US07610028B2

    公开(公告)日：2009-10-27

    申请号：US10358257

    申请日：2003-02-05

    申请人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    发明人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    IPC分类号： H04B1/04 ,  H01Q11/12

    CPC分类号： H04L27/2623 ,  H04B1/0475 ,  H04B7/2628 ,  H04B2201/70706 ,  H04L27/2614 ,  H04L27/2621

    摘要： The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present invention is applied to reduce the PAP of an OFDM signal. According to an alternative embodiment, the present invention is applied to reduce the PAP of a CDMA signal. Rather than seeking the optimum solution, which involves significant computational complexity, the present invention provides for a number of sub-optimal techniques for reducing the PAP of an OFDM signal but with much lower computational complexity. In particular, according to one embodiment utilizing the PTS approach, an iterative technique is used to assign phase factors to each of a set of partial transmit sequences from a set of possible phase factors. Experimental results using the iterative technique showed only a slight degradation (1 dB) from the optimal approach using the same number of subblocks and subcarriers. In an alternative embodiment, which avoids feedback required by the iterative approach, a sequence of phase factors are generated randomly and assigned to each of a set of partial transmit sequences. This procedure is repeated for a predetermined number of trials and the random sequence generating the lowest PAP is selected. In a third embodiment, a set of phase factors is generated using a structured sequence such as a Walsh sequence.

    摘要翻译： 本发明提供一种降低计算复杂度低的信号的峰均功率比（PAP）的方法和系统。 根据一个实施例，本发明应用于减少OFDM信号的PAP。 根据替代实施例，本发明被应用于减少CDMA信号的PAP。 本发明不是寻求涉及大量计算复杂度的最佳解决方案，而是提供了许多用于减少OFDM信号的PAP但具有低得多的计算复杂度的次优技术。 特别地，根据利用PTS方法的一个实施例，使用迭代技术来从一组可能的相位因子将相位因子分配给一组部分发送序列中的每一个。 使用迭代技术的实验结果显示，使用相同数量的子块和子载波的最优方法仅显示轻微的退化（1 dB）。 在避免迭代方法所需的反馈的替代实施例中，随机产生一系列相位因子并分配给一组部分发送序列中的每一个。 对于预定数量的试验重复该过程，并且选择产生最低PAP的随机序列。 在第三实施例中，使用诸如沃尔什序列的结构化序列来生成一组相位因子。

    Method and apparatus for mobile data communication
    17.
    发明授权
    Method and apparatus for mobile data communication 有权
    移动数据通信的方法和装置

    公开(公告)号：US06404783B1

    公开(公告)日：2002-06-11

    申请号：US09692544

    申请日：2000-10-20

    申请人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    发明人： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

    IPC分类号： H04J312

    CPC分类号： H04L1/0057 ,  H04B7/0613 ,  H04B7/0837 ,  H04L1/04 ,  H04L1/06 ,  H04L1/08 ,  H04L27/2602 ,  H04L27/2626

    摘要： A high-speed wireless transmission system is employable in a macro-cellular environment. In the system multiple transmit antennas are employed. Multiple carrier tones are used to transmit the data. The carrier tones can be assigned to the respective transmit antennas in such a manner as to provide each antenna with a subset of carrier tones with each subset being spread over the transmission spectrum. In addition, operation is enhanced by providing Reed-Solomon coding of the data across consecutive time intervals.

    摘要翻译： 高速无线传输系统可以在宏蜂窝环境中使用。 在该系统中，采用多个发射天线。 使用多载波音调传输数据。 可以以这样的方式将载波音调分配给相应的发射天线，以便为每个天线提供载波音调的子集，其中每个子集分布在传输频谱上。 此外，通过在连续的时间间隔内提供数据的Reed-Solomon编码来增强操作。

    Rate-Adaptive Multiple Input/Multiple Output (MIMO) Systems
    19.
    发明申请
    Rate-Adaptive Multiple Input/Multiple Output (MIMO) Systems 有权
    速率自适应多输入多输出（MIMO）系统

    公开(公告)号：US20110176599A1

    公开(公告)日：2011-07-21

    申请号：US13048573

    申请日：2011-03-15

    申请人： Hui Luo ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    发明人： Hui Luo ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    IPC分类号： H04B17/00

    CPC分类号： H04B7/0413 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0891 ,  H04B17/345 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0618 ,  H04L1/1671 ,  H04L1/1809 ,  H04W52/42

    摘要： A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system performance measure. In addition, the system may also jointly determine the best modulation, coding, power control, and frequency assignment for each link, based on an overall system performance measure. In OFDM systems, the number of independent streams, as well as the modulation, coding, and power control, may be determined on a tone-by-tone basis based on an overall system performance measure.

    摘要翻译： 通过多径无线通信系统进行通信的速率自适应方法使用多个链路，使得链路的每一端使用多个发射和接收天线。 基于整个系统性能测量来确定要为每个链路传输的多个独立流。 此外，系统还可以基于整个系统性能测量来共同确定每个链路的最佳调制，编码，功率控制和频率分配。 在OFDM系统中，独立流的数量以及调制，编码和功率控制可以基于整个系统性能测量在逐个音调的基础上确定。

    Rate-adaptive multiple input/multiple output (MIMO) wireless system
    20.
    发明授权
    Rate-adaptive multiple input/multiple output (MIMO) wireless system 有权
    速率自适应多输入（MIMO）无线系统

    公开(公告)号：US07929925B2

    公开(公告)日：2011-04-19

    申请号：US12832664

    申请日：2010-07-08

    申请人： Hui Luo ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    发明人： Hui Luo ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

    IPC分类号： H03C7/02 ,  H04M1/00 ,  H04B7/00

    CPC分类号： H04B7/0413 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0891 ,  H04B17/345 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0618 ,  H04L1/1671 ,  H04L1/1809 ,  H04W52/42

    摘要： A rate-adaptive method of communicating over a multipath wireless communication system uses multiple links such that each end of a link uses multiple transmit and receive antennas. A number of independent streams that are to be transmitted for each link is determined based on an overall system performance measure. In addition, the system may also jointly determine the best modulation, coding, power control, and frequency assignment for each link, based on an overall system performance measure. In OFDM systems, the number of independent streams, as well as the modulation, coding, and power control, may be determined on a tone-by-tone basis based on an overall system performance measure.

    摘要翻译： 通过多径无线通信系统进行通信的速率自适应方法使用多个链路，使得链路的每一端使用多个发射和接收天线。 基于整个系统性能测量来确定要为每个链路传输的多个独立流。 此外，系统还可以基于整个系统性能测量来共同确定每个链路的最佳调制，编码，功率控制和频率分配。 在OFDM系统中，独立流的数量以及调制，编码和功率控制可以基于整个系统性能测量在逐个音调的基础上确定。