专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07187736B2 Reducing interference in a GSM communication system 有权
标题翻译：减少GSM通信系统的干扰
公开(公告)号：US07187736B2
公开(公告)日：2007-03-06
申请号：US10366106
申请日：2003-02-13
申请人： Michael Eoin Buckley , Raja S. Bachu , Kenneth A. Stewart , Clint S. Wilkins
发明人： Michael Eoin Buckley , Raja S. Bachu , Kenneth A. Stewart , Clint S. Wilkins
IPC分类号： H04B1/10
CPC分类号： H04L25/0244 , H04L25/0224 , H04L27/2017 , H04L2025/03407 , H04L2025/03414
摘要： A method for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter for alternate linear equalization. The method includes a first step (300) of inputting a burst of data of a received waveform including interference from a channel of the communication system. A next step (302) includes training the finite-impulse-response filter with a set of symbols of specific quadrature phase, known a priori, in the burst of data of the received waveform. For example known real only and imaginary only symbols are alternatively selected from a midamble of the data burst. A next step (304) includes operating on the received waveform with the finite-impulse-response filter to alternately linearly equalize the burst of data to provide an estimate of the desired signal.
摘要翻译：用于减少GSM通信系统中的期望信号的干扰的方法使用有限脉冲响应滤波器进行交替的线性均衡。该方法包括：输入包括来自通信系统的信道的干扰的接收波形的数据的突发的第一步骤（300）。下一步骤（302）包括在接收波形的数据脉冲串中先验已知的具有特定正交相位的一组符号来训练有限脉冲响应滤波器。例如，可以从数据脉冲串的中同步码中选择已知的仅实际和仅虚拟符号。下一步骤（304）包括利用有限脉冲响应滤波器对接收到的波形进行操作，以交替地线性均衡数据突发以提供期望信号的估计。

2. 发明授权

US07818632B2 Code-word list algorithm 有权
标题翻译：码字列表算法
公开(公告)号：US07818632B2
公开(公告)日：2010-10-19
申请号：US11427057
申请日：2006-06-28
申请人： Raja S. Bachu , Michael E. Buckley , Kenneth A. Stewart , Clint S. Wilkins
发明人： Raja S. Bachu , Michael E. Buckley , Kenneth A. Stewart , Clint S. Wilkins
IPC分类号： G08C25/02
CPC分类号： H04L1/0061 , H03M13/09 , H03M13/451 , H03M13/458 , H04L1/0054
摘要： A communications system for reducing bit errors in a received data sequence provides a method for generating candidate code-word sequences for evaluation by a CRC decoder. The system may determine a most-likely received sequence using the probable code-word list of candidate sequences. The number of candidate sequences may be reduced using computational complexity reduction methods. A communications device also provides a candidate sequence generator for use with a CRC decoder to determine a most-likely received sequence and to reduce bit errors in a received sequence.
摘要翻译：用于减少接收数据序列中的位错误的通信系统提供了一种用于产生候选码字序列以供CRC解码器评估的方法。系统可以使用候选序列的可能的码字列表来确定最可能接收的序列。可以使用计算复杂度降低方法来减少候选序列的数量。通信设备还提供与CRC解码器一起使用的候选序列发生器，以确定最可能的接收序列并减少接收序列中的比特错误。

3. 发明授权

US06944245B2 Multi-pass interference reduction in a GSM communication system 有权
标题翻译： GSM通信系统中的多通道干扰减少
公开(公告)号：US06944245B2
公开(公告)日：2005-09-13
申请号：US10688714
申请日：2003-10-17
申请人： Kenneth A. Stewart , Raja S. Bachu , Michael E. Buckley , Clint S. Wilkins
发明人： Kenneth A. Stewart , Raja S. Bachu , Michael E. Buckley , Clint S. Wilkins
IPC分类号： H04L25/03 , H04B1/10
CPC分类号： H04L25/03038 , H04L2025/03407 , H04L2025/03477
摘要： An iterative method (400) and apparatus (200) for a receiver for reducing interference in a desired signal in a GSM communication system that use a finite-impulse-response filter combined with alternate quadrature component output selection for alternate linear equalization. The method includes inputting a burst of data of a received waveform including interference, training an alternate linear output filter with a midamble of known quadrature phase, providing an estimate of the desired signal by operating on the received waveform with the finite-impulse-response filter, generating log likelihood ratio estimates for a plurality of bits in the burst of data, selecting bits from the burst of data base upon a predetermined condition, and re-training the alternate linear output filter to provide a second improved estimate of the desired signal.
摘要翻译：一种用于在GSM通信系统中减少对期望信号的干扰的接收机的迭代方法（400）和装置（200），所述GSM通信系统使用与交替的线性均衡的交替正交分量输出选择相组合的有限脉冲响应滤波器。该方法包括输入包括干扰的接收波形的数据脉冲串，训练具有已知正交相位的中间码的交替线性输出滤波器，通过利用有限脉冲响应滤波器对接收到的波形进行操作来提供期望信号的估计，产生数据突发中的多个比特的对数似然比估计，根据预定条件从数据库突发中选择比特，并重新训练交替的线性输出滤波器以提供期望信号的第二改进估计。

4. 发明授权

US07471749B2 Channel parameters estimation in a receiver 有权
标题翻译：接收机中的信道参数估计
公开(公告)号：US07471749B2
公开(公告)日：2008-12-30
申请号：US10694464
申请日：2003-10-27
申请人： Kenneth A. Stewart , Raja S. Bachu , Michael E. Buckley , Clint S. Wilkins
发明人： Kenneth A. Stewart , Raja S. Bachu , Michael E. Buckley , Clint S. Wilkins
IPC分类号： H04L25/08
CPC分类号： H04L25/0244 , H04L25/0224 , H04L27/2017 , H04L2025/03407 , H04L2025/03414
摘要： Methods (FIGS. 7 and 8) and corresponding apparatus (200) for estimating a parameter (125) associated with a received signal (120), one method comprising: providing (704, 806) a signal sample (129, 301) corresponding to the received signal (120); processing the signal sample (705, 807) to suppress on channel interference and provide a processed sample or signal estimate; and determining, for example, a delay parameter by comparing (709, 809) the processed sample to a predetermined sample.
摘要翻译：用于估计与接收信号（120）相关联的参数（125）的方法（图7和8）和相应的装置（200），一种方法包括：提供（704,806）对应于接收信号（120）; 处理信号样本（705,807）以抑制信道干扰并提供经处理的采样或信号估计; 以及通过将经处理的样品（709,809）与预定样品进行比较来确定例如延迟参数。

5. 发明授权

US09203663B2 Method for signaling a modulation scheme to user equipment in a communication system 有权
标题翻译：用于向通信系统中的用户设备发送调制方案的方法
公开(公告)号：US09203663B2
公开(公告)日：2015-12-01
申请号：US12024159
申请日：2008-02-01
申请人： Kenneth A. Stewart , Raja S. Bachu , Jianzhong Zhang
发明人： Kenneth A. Stewart , Raja S. Bachu , Jianzhong Zhang
IPC分类号： H04B7/216 , H04L27/00 , H04L27/34 , H04L1/00 , H04L1/18
CPC分类号： H04L27/0008 , H04L1/0003 , H04L1/0025 , H04L1/0072 , H04L1/1819 , H04L27/0012 , H04L27/34
摘要： A method signals a modulation scheme to user equipment on a control channel in a communication system. The method includes encoding the modulation scheme on a modulation specifier and encoding a number of channelization codes on a code group indicator. When the modulation scheme is other than quadrature phase shift keying with the user equipment being configured to support 64-quadrature amplitude modulation (64-QAM), then set the modulation specifier to indicate that the applied modulation scheme is other than QPSK, encode a code offset on a code offset indicator, and set one bit of the code offset indicator to indicate that the applied modulation scheme is 64-QAM. Finally, the method includes transmitting the modulation specifier, the code group indicator, and the code offset indicator on the control channel to the user equipment.
摘要翻译：一种方法是将调制方式发送给通信系统中的控制信道上的用户设备。该方法包括在调制说明符上对调制方案进行编码，并对码组指示符上的多个信道化码进行编码。当调制方案不同于正交相移键控，其中用户设备被配置为支持64-正交幅度调制（64-QAM），则设置调制指示符以指示所施加的调制方案不是QPSK，对码进行编码在码偏移指示符上偏移，并设置码偏移指示符的一位，以指示所应用的调制方案为64-QAM。最后，该方法包括在控制信道上向用户设备发送调制指示符，代码组指示符和代码偏移指示符。

6. 发明申请

US20080101326A1 Wireless multicast broadcast service methods and apparatus 有权
标题翻译：无线组播广播服务方式和装置
公开(公告)号：US20080101326A1
公开(公告)日：2008-05-01
申请号：US11590724
申请日：2006-10-31
申请人： Jianzhong Zhang , Raja S. Bachu , Zhijun Cai , Kenneth A. Stewart
发明人： Jianzhong Zhang , Raja S. Bachu , Zhijun Cai , Kenneth A. Stewart
IPC分类号： H04J3/00
CPC分类号： H04W56/0085 , H04W4/06 , H04W48/08 , H04W72/005
摘要： Embodiments include methods and apparatus associated with wireless multicast and/or broadcast services. A base station (102, FIG. 1) transmits data codes (504, 604, 702, FIGS. 5-7) within a radio frame (300, FIG. 3). The data codes are Code Division Multiple Access (CDMA) data codes, in an embodiment. The base station also transmits a Time Division Multiplexed (TDM) synchronization code (502, 608, 706, FIGS. 5-7), in an embodiment. The base station discontinuously transmits (1004, FIG. 10) a portion of a radio frame slot that is coincident in time with a duration of the TDM synchronization code, in various embodiments. The discontinuously transmitted portion of the radio frame slot may include Transport Format Combination Indicator (TFCI) bits (510, FIG. 5), pilot bits (710, FIG. 7), or data bits (612, FIG. 6), in various embodiments. A base station's transmissions may be synchronous in time and frequency with the transmissions of other base stations.
摘要翻译：实施例包括与无线多播和/或广播服务相关联的方法和装置。基站（图1中的102）在无线帧（300，图3））内发送数据码（504,604,702，图5-7）。在一个实施例中，数据码是码分多址（CDMA）数据码。在一个实施例中，基站还发送时分多路复用（TDM）同步码（502,608,706，图5至图7）。在各种实施例中，基站在时间上与TDM同步码的持续时间不一致地发送（1004，图10）一部分无线帧时隙。无线电帧时隙的不连续发送部分可以包括传输格式组合指示符（TFCI）比特（图5中的510），导频比特（710，图7）或数据比特（612，图6）实施例。基站的传输可能与其他基站的传输在时间和频率上同步。

7. 发明授权

US07844265B2 Method for aperiodic mobile assisted sleep mode 有权
标题翻译：非周期移动辅助睡眠模式的方法
公开(公告)号：US07844265B2
公开(公告)日：2010-11-30
申请号：US11350548
申请日：2006-02-09
申请人： Ravi Kuchibhotla , Raja S. Bachu , Robert T. Love , Ravikiran Nory , Kenneth A. Stewart
发明人： Ravi Kuchibhotla , Raja S. Bachu , Robert T. Love , Ravikiran Nory , Kenneth A. Stewart
IPC分类号： H04W24/00
CPC分类号： H04W52/0238 , H04W52/0245 , Y02D70/1242 , Y02D70/24
摘要： Disclosed is a method for mobile assisted sleep mode to reduce current drain in packet based mobile systems. The method comprising the step of receiving (102) from a network a channel condition threshold. Then, monitoring (104) a channel condition while in sleep mode. Then exiting (110) sleep mode in response to the determination (108) that the monitored channel condition is greater than the channel condition threshold.
摘要翻译：公开了一种用于移动辅助睡眠模式以减少基于分组的移动系统中的电流消耗的方法。该方法包括从网络接收（102）信道条件阈值的步骤。然后，在睡眠模式下监视（104）信道条件。然后响应于所确定（108）所监视的信道状况大于信道条件阈值，退出（110）睡眠模式。

8. 发明申请

US20070268834A1 INFORMATION ENCODING ON A CODEWORD IN WIRELESS COMMUNICATION NETWORKS 有权
标题翻译：在无线通信网络编码的信息
公开(公告)号：US20070268834A1
公开(公告)日：2007-11-22
申请号：US11419177
申请日：2006-05-18
申请人： Michael E. Buckley , Raja S. Bachu , Jeffrey C. Smolinske , Kenneth A. Stewart
发明人： Michael E. Buckley , Raja S. Bachu , Jeffrey C. Smolinske , Kenneth A. Stewart
IPC分类号： H04J3/14
CPC分类号： H04L5/04 , H03M13/093 , H03M13/175 , H03M13/2906 , H04L1/0041 , H04L1/0065 , H04L1/0073 , H04L1/1607
摘要： A wireless communication network entity 400 and a method therein wherein data is encoded using an error correcting code to form a first codeword, for example, a cyclic redundancy code, including redundancy. A second codeword is generated by encoding additional data on a portion of the first codeword, wherein the portion of the first codeword on which the additional data is encoded being within an error correction capability of the first codeword.
摘要翻译：一种无线通信网络实体400及其中的数据使用纠错码进行编码以形成第一码字，例如包括冗余的循环冗余码。通过对第一码字的一部分上的附加数据进行编码来生成第二码字，其中附加数据被编码的第一码字的部分在第一码字的纠错能力之内。

9. 发明授权

US07000173B2 Turbo code based incremental redundancy 有权
公开(公告)号：US07000173B2
公开(公告)日：2006-02-14
申请号：US10074115
申请日：2002-02-11
申请人： Michael E. Buckley , Raja S. Bachu , Amitava Ghosh , Rapeepat Ratasuk , Kenneth A. Stewart , Mathieu Villion
发明人： Michael E. Buckley , Raja S. Bachu , Amitava Ghosh , Rapeepat Ratasuk , Kenneth A. Stewart , Mathieu Villion
IPC分类号： H03M13/03
CPC分类号： H04L1/1816 , H03M13/258 , H03M13/2957 , H03M13/6306 , H03M13/6381 , H04L1/0041 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1819 , H04L1/1845 , H04L1/1874 , H04L1/1887
摘要： An improved turbo code based incremental redundancy includes a first step of puncturing a data stream for a first transmission to provide a set of first unpunctured trellis sections. A next step includes puncturing a data stream for a second transmission to provide a set of second unpunctured trellis sections. A next step includes incremental redundancy combining the first and second transmissions of the trellises to provide non-adjacent first and second unpunctured trellis sections. The above arrangement results in a uniform distribution of punctured and unpunctured bits to provide lower errors.

10. 发明授权

US08189581B2 Method, signal and apparatus for managing the transmission and receipt of broadcast channel information 有权
标题翻译：用于管理广播频道信息的发送和接收的方法，信号和装置
公开(公告)号：US08189581B2
公开(公告)日：2012-05-29
申请号：US11765876
申请日：2007-06-20
申请人： Raja S. Bachu , Michael E. Buckley , Kenneth A. Stewart
发明人： Raja S. Bachu , Michael E. Buckley , Kenneth A. Stewart
IPC分类号： H04L12/28 , H04L27/06 , H04J3/00 , H04N7/16
CPC分类号： H04L1/08 , H04L1/0041 , H04L1/0072
摘要： The present invention provides a method for transmitting broadcast channel information as part of a broadcast channel signal having one or more transmission intervals, where each transmission interval includes a plurality of transmissions, and one or more of the transmissions are active frames in which broadcast channel information is transmitted. Invariant portions that are present in the broadcast channel information are identified separate from any variant portions and are encoded for transmission, and the variant portions are used to select transmission specific configurations, which can be detected during the decoding by the receiver. Upon detection of the transmission specific configuration used to encode the invariant portions, the value of the variant portion can be identified and reintroduced as part of the received broadcast channel information.
摘要翻译：本发明提供一种用于发送广播频道信息作为具有一个或多个发射间隔的广播信道信号的一部分的方法，其中每个传输间隔包括多个传输，并且一个或多个传输是主动帧，其中广播信道信息被传送。存在于广播频道信息中的不变部分被识别为与任何变体部分分离，并被编码用于传输，并且变体部分用于选择传输特定配置，其可以在接收机的解码期间检测。在检测到用于对不变部分进行编码的传输特定配置时，可以识别变型部分的值并将其重新引入作为所接收的广播信道信息的一部分。

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