公开(公告)号：US08116260B1

公开(公告)日：2012-02-14

申请号：US09935069

申请日：2001-08-22

Applicant: Ye Li ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

Inventor： Ye Li ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

IPC: H04W4/08 ,  H04W28/02 ,  H04W28/08 ,  H04J4/00

CPC classification number: H04B1/0475 ,  H04B7/0413 ,  H04B7/0669 ,  H04L5/0023 ,  H04L27/2626 ,  H04L27/2647 ,  H04W88/08

Abstract: A wireless multiple-input multiple-output (MIMO) communication system includes signal simulcasting. Base stations include a plurality of transmit antennas and terminals include a plurality of receive antennas to form MIMO channels. In one embodiment, a simulcasting MIMO wireless communication system includes orthogonal frequency division multiplexing (OFDM). This arrangement achieves the spectral efficiency advantages of OFDM and simulcasting.

Abstract translation: 无线多输入多输出（MIMO）通信系统包括信号同步广播。 基站包括多个发射天线，并且终端包括多个接收天线以形成MIMO信道。 在一个实施例中，同时广播的MIMO无线通信系统包括正交频分复用（OFDM）。 这种安排实现了OFDM和同时播送的频谱效率优势。

公开(公告)号：US20110292985A1

公开(公告)日：2011-12-01

申请号：US13205231

申请日：2011-08-08

Applicant: Leonard Joseph Cimini, JR. ,  Nelson Ray Sollenberger

Inventor： Leonard Joseph Cimini, JR. ,  Nelson Ray Sollenberger

IPC: H04L27/06 ,  H04B17/00

CPC classification number: H04L27/2615 ,  H04B1/06 ,  H04L27/2601 ,  H04L27/2621 ,  H04L27/2626 ,  H04L27/2647

Abstract: An OFDM system embeds sequence information in the transmitted signal that reduces peak average power ratio (PAP) with minimal impact on the overall system efficiency. A marker is embedded onto the transmitted information that is used to identify the combining (inversion) sequence at the receiver. In one embodiment, selected tones in a cluster are rotated when the corresponding phase factor rotates the cluster.

Abstract translation: OFDM系统在传输信号中嵌入序列信息，降低峰值平均功率比（PAP），对整个系统的效率影响最小。 标记被嵌入到用于识别接收机上的组合（反转）序列的所发送的信息上。 在一个实施例中，当对应的相位因子旋转群集时，群集中的所选音调被旋转。

公开(公告)号：US07643404B2

公开(公告)日：2010-01-05

申请号：US11380531

申请日：2006-04-27

Applicant: Ye Li ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

Inventor： Ye Li ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

IPC: H04J11/00

CPC classification number: H04L27/2601 ,  H04L1/0618

Abstract: A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.

Abstract translation: MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中，可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。

公开(公告)号：US07610028B2

公开(公告)日：2009-10-27

申请号：US10358257

申请日：2003-02-05

Applicant: Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

Inventor： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H04L27/2623 ,  H04B1/0475 ,  H04B7/2628 ,  H04B2201/70706 ,  H04L27/2614 ,  H04L27/2621

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07369487B2

公开(公告)日：2008-05-06

申请号：US10875597

申请日：2004-06-24

Applicant: Ye Li ,  Nelson Ray Sollenberger

Inventor： Ye Li ,  Nelson Ray Sollenberger

IPC: H04J11/00 ,  H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2647 ,  H04L5/023 ,  H04L25/0204 ,  H04L25/0242

Abstract: An improved OFDM receiver is realized by employing a simplified delay function for the transmissions channel. The simplified delay function yields a simplified frequency-domain correlation that is applied to develop an Eigen matrix U that is used in developing estimates of the channels. Those channel estimates are used in the receiver to develop the output signals.

Abstract translation: 通过对传输信道采用简化的延迟函数来实现改进的OFDM接收机。 简化的延迟函数产生一个简化的频域相关性，用于开发用于开发信道估计的特征矩阵U。 在接收机中使用这些信道估计来开发输出信号。

公开(公告)号：US06590533B2

公开(公告)日：2003-07-08

申请号：US10155380

申请日：2002-05-24

Applicant: Nelson Ray Sollenberger ,  Jack Harriman Winters

Inventor： Nelson Ray Sollenberger ,  Jack Harriman Winters

IPC: G01S124

CPC classification number: H04W52/283 ,  G01S5/02 ,  H04W4/02 ,  H04W4/90 ,  H04W8/18 ,  H04W52/367 ,  H04W52/50 ,  H04W76/50

Abstract: A method of locating a mobile telephone includes steps of receiving, transmitting, increasing and determining. In the receiving step, a first base station receives a call from a mobile telephone, the call including a dialed number and a TDMA signal. In the transmitting step, the base station transmits a control message to the mobile telephone when the dialed number meets a predetermined criterion, such as being 911. The control message instructs the mobile telephone to transmit the TDMA signal at a maximum power. In the increasing step, the mobile telephone increases the TDMA signal to maximum power in response to the control message. Then in the determining step, location information for the mobile telephone is determined based on at least one characteristic of the TDMA signal received at at least one of the first base station and other base stations. In an alternate embodiment, the method is practiced in a mobile telephone and the power level is automatically increased in response to the dialed number meeting a predetermined criterion.

公开(公告)号：US06404783B1

公开(公告)日：2002-06-11

申请号：US09692544

申请日：2000-10-20

Applicant: Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

Inventor： Leonard Joseph Cimini, Jr. ,  Nelson Ray Sollenberger

IPC: H04J312

CPC classification number: H04L1/0057 ,  H04B7/0613 ,  H04B7/0837 ,  H04L1/04 ,  H04L1/06 ,  H04L1/08 ,  H04L27/2602 ,  H04L27/2626

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06278752B1

公开(公告)日：2001-08-21

申请号：US08850738

申请日：1997-05-02

Applicant: Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

Inventor： Glenn David Golden ,  Carol Catalano Martin ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

IPC: H04B110

CPC classification number: H04L7/041 ,  H04L7/033

Abstract: A system and method for generating a coherent reference signal for extracting desired user signals from received signals even after error propagation is underway, are presented. A data symbol preceding a sequence whose relative phases are known is used as an absolute phase reference. Since errors in detection of the phase reference symbol are usually caused by error propagation already underway, the sequence can be used to reacquire the desired signal with merely an absolute phase shift in detected data, which allows accurate differential detection of the desired user signal even in the absence of absolute phase knowledge.

Abstract translation: 提出了即使在错误传播之后也产生用于从接收信号中提取所需用户信号的相干参考信号的系统和方法。 使用相对相位已知的序列之前的数据符号作为绝对相位参考。 由于相位参考符号的检测中的误差通常是由正在进行的误差传播引起的，所以该序列可用于仅在所检测的数据中用绝对相移来重新获取期望的信号，这允许精确的差分检测期望的用户信号，即使在 缺乏绝对阶段的知识。

公开(公告)号：US6125152A

公开(公告)日：2000-09-26

申请号：US695492

申请日：1996-08-12

Applicant: Glenn David Golden ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

Inventor： Glenn David Golden ,  Nelson Ray Sollenberger ,  Jack Harriman Winters

IPC: H04B1/28 ,  H04B1/38 ,  H04B7/08 ,  H04L1/06 ,  H04L27/22 ,  H04L1/00 ,  H04B1/10 ,  H04B7/00

CPC classification number: H04B1/0007 ,  H04B1/0003 ,  H04B1/28 ,  H04B1/38 ,  H04B7/0854 ,  H04L1/06 ,  H04L27/22

Abstract: An improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals, and providing a processed signal having an amplitude; and an adjusting circuit for adjusting the amplitude of the processed signal, the adjusting circuit coupled to the processing circuit, where the adjusting circuit adjusts the amplitude as a function of distortion of the plurality of received signals. The processing circuit can weight and combine the plurality of received signals. The distortion can be estimated from a squared error of the plurality of received signals, which can be averaged over a sliding window. The function can comprise multiplying the processed signal by square root of the averaged squared error. Such amplitude adjustment is useful to maintain the soft decision information for the processed signal that is fed to a base station having soft decision decoding, or can be used in the base station with soft decoding.

Abstract translation: 数字无线接收机的改进包括处理电路，用于处理多个接收信号，并提供具有振幅的处理信号; 以及用于调整处理信号的幅度的调整电路，调整电路耦合到处理电路，其中调整电路根据多个接收信号的失真调整幅度。 处理电路可以对多个接收信号进行加权和组合。 可以从多个接收信号的平方误差估计失真，其可以在滑动窗口上进行平均。 该功能可以包括将经处理的信号乘以平均平方误差的平方根。 这种幅度调整对于维持馈送到具有软判决解码的基站的处理信号的软判决信息是有用的，或者可以在具有软解码的基站中使用。

公开(公告)号：US5973642A

公开(公告)日：1999-10-26

申请号：US53281

申请日：1998-04-01

Applicant: Ye Li ,  Nelson Ray Sollenberger

Inventor： Ye Li ,  Nelson Ray Sollenberger

IPC: G01S3/72 ,  H01Q3/26 ,  H04L25/02 ,  H04L27/26 ,  G01S3/16 ,  G01S3/28

CPC classification number: H04L25/022 ,  G01S3/72 ,  H01Q3/2605 ,  H04L27/2647

Abstract: A technique for estimating parameters for adaptive antenna arrays in orthogonal frequency division multiplexing systems with co-channel interference is disclosed. Channel parameter estimation is preferentially performed using a two pass process that advantageously expands the temporal scope (relative to a single pass process) and considers past, present and future temporal channel estimations during parameter estimation. Channel parameters are estimated by processing the signals through fast Fourier transforms, temporal filters, and inverse fast Fourier transforms. The temporal filters optimize parameter estimation based upon instantaneous correlation of the received signals.

Abstract translation: 公开了一种用于在具有同信道干扰的正交频分复用系统中估计自适应天线阵列的参数的技术。 使用有利地扩展时间范围（相对于单次通过过程）的两通过程来优先执行信道参数估计，并且在参数估计期间考虑过去，现在和将来的时间信道估计。 信道参数是通过快速傅立叶变换处理信号，时间滤波器和快速傅立叶反变换来估计的。 时间滤波器基于接收信号的瞬时相关性优化参数估计。