专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US08737911B2 Dual-stage echo cancellation in a wireless repeater using an inserted pilot 有权
标题翻译：使用插入导频的无线中继器中的双级回波消除
公开(公告)号：US08737911B2
公开(公告)日：2014-05-27
申请号：US12609698
申请日：2009-10-30
申请人： Peter John Black , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
发明人： Peter John Black , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
IPC分类号： H04B3/36
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： In one embodiment, a method for providing echo cancellation in a wireless repeater includes: adding the pilot signal to a transmit signal; receiving a receive signal being the sum of a remote signal, a feedback pilot signal and a feedback transmit signal; cancelling the feedback transmit signal from the receive signal using a currently available feedback channel estimate and generating a first echo cancelled signal; generating an updated feedback channel estimate using the first echo cancelled signal and the pilot signal as a reference signal; cancelling the feedback transmit signal and the feedback pilot signal from the receive signal using the updated feedback channel estimate and generating a second echo cancelled signal; and amplifying the second echo cancelled signal as the transmit signal. In another embodiment, the feedback pilot signal is cancelled from the first echo cancelled signal using the updated feedback channel estimate to generate the second echo cancelled signal.
摘要翻译：在一个实施例中，一种用于在无线中继器中提供回波消除的方法包括：将导频信号添加到发射信号; 接收作为远程信号，反馈导频信号和反馈发送信号之和的接收信号; 使用当前可用的反馈信道估计从所述接收信号中消除所述反馈发射信号并产生第一回波消除信号; 使用所述第一回波消除信号和所述导频信号作为参考信号产生更新的反馈信道估计; 使用更新的反馈信道估计从接收信号中消除反馈发射信号和反馈导频信号，并产生第二回波消除信号; 并且将第二回波消除信号放大为发送信号。在另一个实施例中，使用更新的反馈信道估计从第一回波消除信号中消除反馈导频信号以产生第二回波消除信号。

62. 发明授权

US08639190B2 Precoding for segment sensitive scheduling in wireless communication systems 有权
标题翻译：无线通信系统中片段敏感调度的预编码
公开(公告)号：US08639190B2
公开(公告)日：2014-01-28
申请号：US11553870
申请日：2006-10-27
申请人： Dhananjay Ashok Gore , Hemanth Sampath , Jibing Wang , Tamer Kadous , Gwendolyn D. Barriac
发明人： Dhananjay Ashok Gore , Hemanth Sampath , Jibing Wang , Tamer Kadous , Gwendolyn D. Barriac
IPC分类号： H04B1/00
CPC分类号： H04B7/0456 , H04L1/0016 , H04L1/0026 , H04L1/0675 , H04L5/023 , H04L25/0206 , H04L27/2602 , H04L27/2608
摘要： Techniques to enhance the performance in a wireless communication system using segments called subbands and using precoding are shown. According to one aspect, the bandwidth for transmission to an access terminal is constrained to a preferred bandwidth which is less than the bandwidth available for transmission to an access terminal and precoding information related to the subcarriers within the constrained bandwidth is provided to a transmitter. The precoding information related to the subcarriers within a constrained bandwidth provides feedback about the forward link channel properties relative to different subbands and may be fed back on a channel associated with the bandwidth.
摘要翻译：示出了使用称为子带并使用预编码的段来增强在无线通信系统中的性能的技术。根据一个方面，用于传输到接入终端的带宽被限制到比可用于传输到接入终端的带宽的优选带宽，并且将与受限带宽内的子载波相关的预编码信息提供给发射机。与受限带宽内的子载波相关的预编码信息提供关于相对于不同子带的前向链路信道属性的反馈，并且可以在与带宽相关联的信道上反馈。

63. 发明授权

US08638835B2 Wireless repeater implementing multi-parameter gain management 失效
标题翻译：无线中继器实现多参数增益管理
公开(公告)号：US08638835B2
公开(公告)日：2014-01-28
申请号：US13312533
申请日：2011-12-06
申请人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore , Tao Tian
发明人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore , Tao Tian
IPC分类号： H04L25/20
CPC分类号： H04B7/15578
摘要： A wireless repeater incorporates a gain management block to implement a multi-parameter gain management algorithm. The gain management algorithm receives gain settings from at least a gain control metric for stability and output signal quality and signal headroom values associated with circuitry of the repeater. The gain management block provides secure and robust boot-up of the repeater as well as oscillation detection and prevention. Furthermore, the gain management block implements repeater stability control, output signal-to-noise level control, uplink and downlink gain balance control and compensation for device constraints.
摘要翻译：无线中继器包含增益管理块以实现多参数增益管理算法。增益管理算法从至少一个增益控制度量接收增益设置，用于稳定性和输出信号质量以及与中继器的电路相关联的信号余量值。增益管理块提供中继器的安全可靠的启动以及振荡检测和防止。此外，增益管理块实现中继器稳定性控制，输出信噪比电平控制，上行链路和下行链路增益平衡控制以及器件约束的补偿。

64. 发明授权

US08630211B2 Hybrid radio architecture for repeaters using RF cancellation reference 失效
标题翻译：使用RF取消参考的中继器的混合无线电架构
公开(公告)号：US08630211B2
公开(公告)日：2014-01-14
申请号：US12827669
申请日：2010-06-30
申请人： Kenneth M. Gainey , James Arthur Proctor, Jr. , Dhananjay Ashok Gore
发明人： Kenneth M. Gainey , James Arthur Proctor, Jr. , Dhananjay Ashok Gore
IPC分类号： H04B7/14 , H04B3/20 , H04B3/36 , H04B7/185 , H04B7/165 , H04J3/08
CPC分类号： H04B1/525 , H04B7/15585
摘要： A wireless repeater includes a receiver circuit implemented as an intermediate frequency (IF) subsampling receiver and a transmitter circuit implemented as a direct conversion (zero-IF) transmitter. The repeater further includes a reference receiver implemented as an IF subsampling receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. Highly accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater. The repeater may include an echo canceller to cancel an estimated feedback amount from an input signal based on the channel estimation.
摘要翻译：无线中继器包括被实现为中频（IF）子采样接收机的接收机电路和被实现为直接转换（零中频））发射机的发射机电路。中继器还包括实现为IF子采样接收机的参考接收机，用于在空中传输之前对发射信号的一部分进行采样，以用作信道估计的参考信号。通过使用来自参考接收机的参考信号来获得高精度的信道估计，因为参考信号考虑了中继器的发射机电路中的失真。中继器可以包括回声消除器，以基于信道估计从输入信号中消除估计的反馈量。

65. 发明授权

US08626060B2 Beacon signals for repeaters within a wireless communications system 有权
标题翻译：信标信号用于无线通信系统中的中继器
公开(公告)号：US08626060B2
公开(公告)日：2014-01-07
申请号：US13086540
申请日：2011-04-14
申请人： Michael Mao Wang , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
发明人： Michael Mao Wang , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
IPC分类号： H04B7/15
CPC分类号： H04B7/15528 , H04L5/0007 , H04W48/10 , H04W84/047
摘要： In an embodiment, a first repeater configures a beacon signal that identifies the first repeater to one or more other repeaters. The first repeater transmits the configured beacon signal at a given transmission power level to the one or more other repeaters. The transmitted beacon signal is received at least by a second repeater. The second repeater reduces interference associated with other transmissions from the first repeater, such as retransmissions of donor signals, based on the received beacon signal.
摘要翻译：在一个实施例中，第一中继器将识别第一中继器的信标信号配置到一个或多个其他中继器。第一中继器以给定的发射功率电平将配置的信标信号发射到一个或多个其它中继器。所发送的信标信号至少由第二中继器接收。第二中继器基于接收到的信标信号来减少与来自第一中继器的其他传输相关联的干扰，例如施主信号的重传。

66. 发明授权

US08611227B2 Channel estimate pruning in presence of large signal dynamics in an interference cancellation repeater 有权
标题翻译：在干扰消除中继器中存在大的信号动态的信道估计修剪
公开(公告)号：US08611227B2
公开(公告)日：2013-12-17
申请号：US12776867
申请日：2010-05-10
申请人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Michael Mao Wang
发明人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Michael Mao Wang
IPC分类号： H04L12/26 , H04J3/08
CPC分类号： H04L25/022 , H04B7/15585 , H04L25/0226
摘要： A method for estimating a feedback channel for a wireless repeater detects changes in a power of a remote signal. When a large power swing in the remote signal is detected, the method operates to discard samples or blocks of samples of the pilot and receive signals and a final channel estimate is generated using undiscarded samples of the pilot and receive signals. Alternately, sub channel estimates are generated using individual blocks of the pilot samples and receive samples. When a large power swing in the remote signal is detected, the method operates to discard one or more sub channel estimates and a final channel estimate is generated using undiscarded sub channel estimates.
摘要翻译：用于估计无线中继器的反馈信道的方法检测远程信号的功率的变化。当检测到远程信号中的大功率摆动时，该方法操作以丢弃导频和接收信号的样本或块样本，并且使用导频和接收信号的未被滤除的样本来生成最终信道估计。或者，使用导频样本的各个块并接收采样来生成子信道估计。当检测到远程信号中的大功率摆动时，该方法操作以丢弃一个或多个子信道估计，并且使用未被清除的子信道估计来生成最终信道估计。

67. 发明授权

US08582548B2 Frequency division multiple access schemes for wireless communication 失效
标题翻译：用于无线通信的频分多址方案
公开(公告)号：US08582548B2
公开(公告)日：2013-11-12
申请号：US11325980
申请日：2006-01-04
申请人： Dhananjay Ashok Gore , Ravi Palanki
发明人： Dhananjay Ashok Gore , Ravi Palanki
IPC分类号： H04B7/208 , H04B7/204 , H04B7/212 , H04J3/00
CPC分类号： H04B7/2621 , H04B1/00 , H04B1/0003 , H04L5/0007 , H04L27/2602 , H04L27/2607 , H04L27/2614
摘要： Techniques for transmitting data using single-carrier frequency division multiple access (SC-FDMA) multiplexing schemes are described. In one aspect, data is sent on sets of adjacent subbands that are offset from one another to achieve frequency diversity. A terminal may be assigned a set of N adjacent subbands that is offset by less than N (e.g., N/2) subbands from another set of N adjacent subbands assigned to another terminal and would then observe interference on only subbands that overlap. In another aspect, a multi-carrier transmission symbol is generated with multi-carrier SC-FDMA. Multiple waveforms carrying modulation symbols in the time domain on multiple sets of subbands are generated. The multiple waveforms are pre-processed (e.g., cyclically delayed by different amounts) to obtain pre-processed waveforms, which are combined (e.g., added) to obtain a composite waveform. A cyclic prefix is appended to the composite waveform to generate the multi-carrier transmission symbol.
摘要翻译：描述了使用单载波频分多址（SC-FDMA）复用方案发送数据的技术。在一个方面，在彼此偏移的相邻子带的集合上发送数据以实现频率分集。可以向终端分配一组N个相邻子带，该组N个相邻子带从N个相邻子带的N个（例如，N / 2个）子带偏移，分配给另一个终端，然后将仅对重叠的子带观察到干扰。在另一方面，使用多载波SC-FDMA生成多载波传输符号。产生在多个子带组上的时域中承载调制符号的多个波形。多个波形被预处理（例如，循环地延迟不同的量）以获得预处理的波形，其被组合（例如，添加）以获得复合波形。循环前缀附加到复合波形以产生多载波传输符号。

68. 发明授权

US08553822B2 Time filtering for excess delay mitigation in OFDM systems 有权
标题翻译： OFDM系统中多余延迟缓解的时间滤波
公开(公告)号：US08553822B2
公开(公告)日：2013-10-08
申请号：US11022513
申请日：2004-12-22
申请人： Dhananjay Ashok Gore , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
发明人： Dhananjay Ashok Gore , Ashok Mantravadi , Fuyun Ling , Krishna Kiran Mukkavilli , Raghuraman Krishnamoorthi
IPC分类号： H04B1/10
CPC分类号： H04L25/0224 , H04L25/0212 , H04L25/022
摘要： Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, time filtering is utilized. Time filtering is utilized to combat excess delay spread effects in channel estimation. The time filtering is performed in the presence of staggered pilots and helps in improving the channel estimate in the presence of excess delay spread.
摘要翻译：描述了具有超延迟扩展的OFDM系统的导频传输和信道估计技术。为了减轻多余延迟扩展的有害影响，利用时间滤波。利用时间滤波来对付信道估计中的多余延迟扩散效应。在存在交错导频的情况下执行时间滤波，并有助于在存在超延迟扩展的情况下改善信道估计。

69. 发明授权

US08548375B2 Gain control metric computation in a wireless repeater 失效
标题翻译：无线中继器中增益控制度量计算
公开(公告)号：US08548375B2
公开(公告)日：2013-10-01
申请号：US12722694
申请日：2010-03-12
申请人： Michael Mao Wang , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
发明人： Michael Mao Wang , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
IPC分类号： H04B7/14
CPC分类号： H04B7/15585 , H04B7/15535
摘要： A wireless repeater includes a gain control metric computation block to compute a gain control metric for use in controlling the variable gain of the repeater. The gain control metric is computed by downsampling the gain control input signal to the gain control metric computation block and also downsampling the computed correlation and normalization terms. The gain control metric may be further enhanced by filtering the computed metric values using linear or non-linear filtering.
摘要翻译：无线中继器包括增益控制度量计算块，用于计算用于控制中继器的可变增益的增益控制度量。通过将增益控制输入信号下采样到增益控制度量计算块来计算增益控制度量，并且还对所计算的相关和归一化项进行下采样。可以通过使用线性或非线性滤波来过滤所计算的度量值来进一步增强增益控制度量。

70. 发明申请

US20130143483A1 MAINTAINING REPEATER STABILITY IN A MULTI-REPEATER SCENARIO 审中-公开
标题翻译：维持多重场景中的重复稳定性
公开(公告)号：US20130143483A1
公开(公告)日：2013-06-06
申请号：US13312642
申请日：2011-12-06
申请人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Tao Tian , Michael Mao Wang , James Arthur Proctor, JR. , Kenneth M. Gainey
发明人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Tao Tian , Michael Mao Wang , James Arthur Proctor, JR. , Kenneth M. Gainey
IPC分类号： H04B7/14
CPC分类号： H04B7/2606 , H04B7/15585
摘要： A wireless repeater in a multi-repeater environment operates to detect the presence of neighboring repeaters and to maintain repeater stability in the presence of a neighboring repeater. In some embodiments, the repeater transmits a known signal sequence to discover the presence of a neighboring repeater. When a neighboring repeater is detected, the repeater may apply mitigation measures to maintain operational stability at the repeater.
摘要翻译：多中继器环境中的无线中继器操作以检测相邻中继器的存在并且在相邻中继器存在的情况下维持中继器的稳定性。在一些实施例中，中继器发送已知信号序列以发现相邻中继器的存在。当检测到相邻中继器时，中继器可以应用缓解措施来维持中继器的操作稳定性。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式