专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

WO1997045968A1 METHOD OF AND APPARATUS FOR INTERFERENCE REJECTION COMBINING AND DOWNLINK BEAMFORMING IN A CELLULAR RADIOCOMMUNICATIONS SYSTEM 审中-公开
标题翻译：干扰抑制方法与装置在细胞放射性系统中的组合和下行波束成形
公开(公告)号：WO1997045968A1
公开(公告)日：1997-12-04
申请号：PCT/SE1997000910
申请日：1997-05-27
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： TELEFONAKTIEBOLAGET LM ERICSSON (publ) , FORSSEN, Ulf , ÖSTMAN, Thomas , BOTTOMLEY, Gregory, E.
IPC分类号： H04B07/08
CPC分类号： H04B7/0845 , H04B7/0854 , H04B7/086 , H04B7/10 , H04L1/06 , H04L25/03331 , H04W16/28
摘要： Recently, interference rejection combining techniques have been proposed which can increase significantly the performance of the uplink in C/I limited environments. Another interesting property of the IRC techiques is that their C/I performance does not degrade as the correlation between the received signals increases. This feature of IRC techniques is exploited in the present invention to allow for a reduced spacing between the antennas. According to another aspect of the present invention, the performance of the downlink is improved using beamforming techniques to "steer" base station transmissions toward a desired mobile station. In this way, the performance of the downlink is improved using beamforming techniques to a degree similar to that at which the uplink has been improved using IRC techniques. This allows the system designer to more fully exploit the variations in system design associated with improving the uplink performance.
摘要翻译：最近，已经提出了可以在C / I有限的环境中显着提高上行链路的性能的干扰抑制组合技术。 IRC技术的另一个有趣的特性是它们的C / I性能不会随着接收信号之间的相关性的增加而降低。在本发明中利用IRC技术的这一特征来允许天线之间的间隔减小。根据本发明的另一方面，使用波束成形技术来改善下行链路的性能，以将基站传输“转向”到期望的移动台。以这种方式，使用波束成形技术使得使用IRC技术已经改善了上行链路的程度，使得下行链路的性能得到改善。这允许系统设计者更充分地利用与提高上行链路性能相关联的系统设计中的变化。

22. 发明申请

WO2008069736A2 MULTI-TRANSMITTER INTERFERENCE SUPPRESSION USING CODE-SPECIFIC COMBINING 审中-公开
标题翻译：使用代码特定组合的多发送器干扰抑制
公开(公告)号：WO2008069736A2
公开(公告)日：2008-06-12
申请号：PCT/SE2007/050791
申请日：2007-10-29
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： BOTTOMLEY, Gregory, E. , WANG, Yi-Pin, Eric
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7107 , H04B1/7115 , H04B2201/709727 , H04J13/0077
摘要： Multi-transmitter interference caused by one or more interfering own-cell and/or other- cell transmitters is reduced in a RAKE-based receiver. The RAKE-based receiver comprises a plurality of RAKE fingers, a processor and a combiner. The plurality of RAKE fingers are configured to despread received symbols, wherein a delay for a first one of the plurality of RAKE fingers corresponds to a symbol of interest transmitted by a first transmitter and a delay for a second one of the plurality of RAKE fingers corresponds to an interfering symbol transmitted by a second transmitter. The processor is configured to determine a cross-correlation between the symbol of interest and the interfering symbol. The combiner is configured to combine the symbol of interest with the interfering symbol using the cross-correlation to reduce interference attributable to the interfering symbol from the symbol of interest.
摘要翻译：在基于RAKE的接收机中减少由一个或多个干扰自身小区和/或其他小区发射机引起的多发射机干扰。基于RAKE的接收机包括多个RAKE指，处理器和组合器。多个RAKE指状物被配置为对接收到的符号进行解扩，其中多个RAKE指中的第一个RAKE指的延迟对应于由第一发送器发送的感兴趣的符号，并且多个RAKE指中的第二个对应的延迟对应到由第二发射机发射的干扰符号。处理器被配置为确定感兴趣的符号和干扰符号之间的互相关。组合器被配置为使用互相关来组合感兴趣的符号与干扰符号，以减少归因于感兴趣符号的干扰符号的干扰。

23. 发明申请

WO2006137802A3 A METHOD FOR USING CHIP SAMPLE CORRELATIONS WITH SCALE FACTORS IN A CDMA RECEIVER 审中-公开
公开(公告)号：WO2006137802A3
公开(公告)日：2006-12-28
申请号：PCT/SE2006/050206
申请日：2006-06-16
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： FULGHUM, Tracy , BOTTOMLEY, Gregory, E.
IPC分类号： H04B1/707 , H04L25/03
摘要： A wireless communication receiver obtains improved performance under certain fast fading conditions by basing one or more received signal processing operations on pre-despreading chip sample correlations rather than on post-despreading noise correlations, but preserves soft scaling information by determining one or more scaling factors that relate the chip sample correlations to the noise correlations. By way of non-limiting examples, a Generalized RAKE receiver circuit may base combining weight generation on chip sample correlations rather than on post-despreading pilot symbol noise correlations, but scale the combining weights as a function of the one or more scaling factors, or, equivalent^, scale the combined values generated from the combining weights. Similar scaling may be performed with respect to chip equalization filter combining weights in a chip equalization receiver circuit. Further, Signal-to-lnterference Ratio (SIR) estimation may be improved in terms of fast fading responsiveness by using chip sample correlations, while preserving the proper scaling.

24. 发明申请

WO2006035292A2 PARAMETER ESTIMATE INITIALIZATION USING INTERPOLATION 审中-公开
标题翻译：使用插值的参数估计初始化
公开(公告)号：WO2006035292A2
公开(公告)日：2006-04-06
申请号：PCT/IB2005/002859
申请日：2005-09-27
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： COZZO, Carmela , BOTTOMLEY, Gregory, E. , RAMESH, Rajaram
IPC分类号： H04B1/707
CPC分类号： H04B1/712 , H04B1/7117 , H04B2201/709727
摘要： A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when there is at least one new correlator position. For instance, the receiver parameters that can be initialized include: (1) channel coefficients; (2) AFC parameters; (3) tracking parameters; (4) noise statistics (noise correlations); (5) signal statistics (channel coefficient correlations); (6) data statistics (despread values or chip samples); or (7) combining weights.
摘要翻译：本文描述了一种接收机，其能够接收和处理无线电信号，并且还能够在存在与所接收的无线电信号相关联的至少一个延迟中的变化时或者当存在至少一个新的相关器时使用内插来初始化接收机参数位置。例如，可以初始化的接收机参数包括：（1）信道系数; （2）AFC参数; （3）跟踪参数; （4）噪声统计（噪声相关）; （5）信号统计（信道系数相关）; （6）数据统计（去扩展值或芯片样本）; 或（7）组合权重。

25. 发明申请

WO2011007334A2 INTERFERER REGION IDENTIFICATION USING IMAGE PROCESSING 审中-公开
标题翻译：利用图像处理进行干扰区域识别
公开(公告)号：WO2011007334A2
公开(公告)日：2011-01-20
申请号：PCT/IB2010/053238
申请日：2010-07-15
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , MOLNAR, Karl, J. , BOTTOMLEY, Gregory, E.
发明人： MOLNAR, Karl, J. , BOTTOMLEY, Gregory, E.
CPC分类号： H04J11/0023 , G06T1/00 , H04L27/2647
摘要： Demodulation and interference parameter estimation m an OFDM receiver is improved by identifying regions, in a two-dimensional arras of time-frequency transmission positions, having related interference parameters, such as resulting from the same pre-coding scheme, transmission rank, transmitting antennas, and the like. An interference measure is estimated for each of a plurality of time-frequency positions. The interference measures are analyzed by considering them as pixels, or picture elements, in a two-dimensional image, and applying image processing algorithm to identify the regions having related interference parameters The image processing algorithms may include operations such as edge detection, segmentation, and or clustering The receiver may perform interference suppression or cancellation such as interference rejection combining of data extracted from signals received within an identified time-frequency region having related interference parameters.
摘要翻译： OFDM接收机中的解调和干扰参数估计通过识别在时频传输位置的二维阵列中具有相关干扰参数的区域而得到改进，所述相关干扰参数例如来自相同的预编码方案，传输秩，发射天线等。针对多个时频位置中的每一个估计干扰量度。通过将干涉测量视为二维图像中的像素或图像元素并应用图像处理算法来识别具有相关干涉参数的区域来分析干涉测量。图像处理算法可包括诸如边缘检测，分割和或群集接收机可以执行干扰抑制或消除，诸如从在具有相关干扰参数的识别时间频率区域内接收的信号中提取的数据的干扰抑制组合。

26. 发明申请

WO2007115581A1 METHOD AND APPARATUS FOR SELECTING DEMODULATION PROCESSING DELAYS IN A RECEIVER 审中-公开
标题翻译：用于选择接收器中的解调处理延迟的方法和装置
公开(公告)号：WO2007115581A1
公开(公告)日：2007-10-18
申请号：PCT/EP2006/003698
申请日：2006-04-21
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , CAIRNS, Douglas, A. , BOTTOMLEY, Gregory, E.
发明人： CAIRNS, Douglas, A. , BOTTOMLEY, Gregory, E.
IPC分类号： H04B1/707
CPC分类号： H04L25/03044 , H04B1/7117 , H04B1/712 , H04B2201/70707 , H04B2201/709727 , H04L2025/03477 , H04L2025/03515
摘要： A receiver includes a baseband processor for selecting a set of demodulation processing delays for received signal demodulation from a larger set of candidate delays. In one embodiment, the baseband processor selects the set of demodulation processing delays by calculating at least one metric for each demodulation processing delay in the set of candidate delays, iteratively reducing the set of candidate delays by eliminating one or more demodulation processing delays from the set as a function of comparing the metrics, and setting the processing delays for received signal demodulation to the candidate delays remaining after reduction. In a Generalized RAKE (G-RAKE) embodiment, the metric corresponds to combining weight magnitudes associated with G-RAKE finger delays. In a chip equalizer embodiment, the metric corresponds to coefficient magnitudes associated with equalization filter tap delays. In other embodiments, the metric corresponds to Signal to Interference Ratios (SIRs) associated with the set of candidate delays.
摘要翻译：接收机包括基带处理器，用于从更大的一组候选延迟中选择用于接收信号解调的一组解调处理延迟。在一个实施例中，基带处理器通过针对候选延迟集合中的每个解调处理延迟计算至少一个度量来选择一组解调处理延迟，通过从集合中消除一个或多个解调处理延迟来迭代地减少候选延迟集合作为比较度量的函数，以及将接收信号解调的处理延迟设置为在还原之后剩余的候选延迟。在广义RAKE（G-RAKE）实施例中，度量对应于与G-RAKE手指延迟相关联的重量幅度。在码片均衡器实施例中，度量对应于与均衡滤波器抽头延迟相关联的系数幅度。在其他实施例中，度量对应于与该组候选延迟相关联的信号与干扰比（SIR）。

27. 发明申请

WO2006122805A1 METHOD AND APPARATUS FOR TRANSMIT POWER CONTROL 审中-公开
标题翻译：用于发射功率控制的方法和装置
公开(公告)号：WO2006122805A1
公开(公告)日：2006-11-23
申请号：PCT/EP2006/004723
申请日：2006-05-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , ANDERSSON, Lennart , WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, E.
发明人： ANDERSSON, Lennart , WANG, Yi-Pin, Eric , BOTTOMLEY, Gregory, E.
IPC分类号： H04B7/005
CPC分类号： H04W52/286 , H04B2201/709727 , H04W52/16 , H04W52/325
摘要： According to method and apparatus embodiments taught herein, power control feedback is generated for a control channel signal that is received in conjunction with a reference channel signal based on the reference channel's signal strength or quality, and an estimate of a gain factor relating the control and reference channel signals. By way of non-limiting example set in a Wideband CDMA (WCDMA) context, the reference channel signal comprises a Common Pilot Channel (CPICH) signal and the control channel signal comprises a Fractional Dedicated Physical Channel (F-DPCH) signal that is transmitted at an (unknown) power gain relative to the CPICH signal.
摘要翻译：根据本文教导的方法和装置实施例，为基于参考信道的信号强度或质量而结合参考信道信号接收的控制信道信号生成功率控制反馈，以及与控制和参考通道信号。通过在宽带CDMA（WCDMA）上下文中设置的非限制性示例，参考信道信号包括公共导频信道（CPICH）信号，并且控制信道信号包括传输的分数专用物理信道（F-DPCH）信号以相对于CPICH信号的（未知）功率增益。

28. 发明申请

WO2007089180A1 CYCLIC REDUNDANCY IN OFDM SYSTEMS 审中-公开
标题翻译： OFDM系统中的循环冗余
公开(公告)号：WO2007089180A1
公开(公告)日：2007-08-09
申请号：PCT/SE2006/000161
申请日：2006-02-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , BOTTOMLEY, Gregory, E. , WILHELMSSON, Leif
发明人： BOTTOMLEY, Gregory, E. , WILHELMSSON, Leif
IPC分类号： H04L27/26 , H04J11/00
CPC分类号： H04L25/022 , H04L5/0017 , H04L5/0023 , H04L27/2607 , H04L27/265 , H04L27/2653 , H04L27/2662 , H04W16/14
摘要： Method, communication system, receiver, baseband processor and computer program for recovering data from a received OFDM-signal containing recurrent redundant information where part of the recurrent redundant information is used to maximize the SINR (Signal to Interference plus Noise Ratio) of the received OFDM-signal.
摘要翻译：方法，通信系统，接收机，基带处理器和计算机程序，用于从包含循环冗余信息的接收的OFDM信号中恢复数据，其中部分循环冗余信息用于使接收的OFDM的SINR（信号干扰加噪声比）最大化 -信号。

29. 发明授权

EP2356752B1 TIME-DIVISION MULTIPLEXED PILOT SIGNAL FOR INTEGRATED MOBILE BROADCASTS 有权转让
标题翻译：分时PILOT信号集成的移动广播
公开(公告)号：EP2356752B1
公开(公告)日：2016-02-24
申请号：EP09775278.6
申请日：2009-11-18
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： BOTTOMLEY, Gregory, E. , GERSTENBERGER, Dirk , LINDBOM, Lars , WANG, Yi-Pin Eric
IPC分类号： H04B1/707
CPC分类号： H04W4/06 , H04B1/707 , H04B2201/70701 , H04J3/00 , H04J13/0044 , H04J13/20

30. 发明公开

EP2520026A1 ITERATIVE DECODING AND DEMODULATION WITH FEEDBACK ATTENUATION 有权
标题翻译：迭代解码和解调具有反馈的弱化
公开(公告)号：EP2520026A1
公开(公告)日：2012-11-07
申请号：EP10810982.8
申请日：2010-12-15
申请人： Telefonaktiebolaget LM Ericsson (publ)
发明人： KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, E. , CHENG, Jung-Fu
IPC分类号： H03M13/29 , H03M13/37
CPC分类号： H03M13/2987 , H03M13/2957 , H03M13/296 , H03M13/3707 , H03M13/6325 , H03M13/6561 , H03M13/658 , H03M13/6591 , H04L1/005 , H04L25/03286
摘要： An iterative demodulator and decoder uses feedback attenuation to maintain proper balance between the demodulator and decoder. Balance is maintained by attenuating the influence of extrinsic information fed back from the decoder to the demodulator to prevent strong decisions by the decoder from overwhelming the demodulator.

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