公开(公告)号：US07899015B2

公开(公告)日：2011-03-01

申请号：US11681302

申请日：2007-03-02

Applicant: Gregory E. Bottomley ,  Jung-fu Cheng ,  Havish Koorapaty ,  Rajaram Ramesh

Inventor： Gregory E. Bottomley ,  Jung-fu Cheng ,  Havish Koorapaty ,  Rajaram Ramesh

IPC: H04B7/216

CPC classification number: H04W72/0406 ,  H04B2201/709727 ,  H04W4/18 ,  H04W48/08 ,  H04W72/082

Abstract: Method and apparatuses taught herein enable link adaptation feedback to be determined in advance for future transmit intervals, based on one or more data sending units sending indications of future transmit resource allocations, and receiving corresponding link adaptation feedback from data receiving units. Knowledge of the future transmit resource allocations enable individual data sending units to predict interference conditions for the future transmit interval, and thereby compute link adaptation feedback that takes advantage of low-interference conditions. Individual data sending units receive link adaptation feedback for the future transmit interval from the data receiving units they are supporting, and make corresponding link adaptations for the future transmit interval. Such operations are, in one or more embodiments, carried out in a Wideband Code Division Multiple Access (WCDMA), Long Term Evolution LTE), or WiMAX network, wherein the data sending units comprise radio base stations, and the data receiving units comprise wireless communication devices.

Abstract translation: 基于一个或多个数据发送单元发送未来发送资源分配的指示，以及从数据接收单元接收相应的链路适配反馈，本文教导的方法和装置使能够针对未来的发射间隔预先确定链路自适应反馈。 对未来发送资源分配的了解使各个数据发送单元能够预测未来发射间隔的干扰条件，从而计算利用低干扰条件的链路自适应反馈。 单个数据发送单元从其所支持的数据接收单元接收将来发送间隔的链路自适应反馈，并对未来发送间隔进行相应的链路适配。 在一个或多个实施例中，这样的操作在宽带码分多址（WCDMA），长期演进LTE）或WiMAX网络中进行，其中数据发送单元包括无线电基站，并且数据接收单元包括无线 通讯设备。

公开(公告)号：US07885608B2

公开(公告)日：2011-02-08

申请号：US11722237

申请日：2005-12-19

Applicant: Johan Nilsson ,  Bengt Lindoff

Inventor： Johan Nilsson ,  Bengt Lindoff

IPC: H04B1/00 ,  H04B7/00

CPC classification number: H04W52/26 ,  H04B7/0628 ,  H04B7/0634 ,  H04B2201/709727 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/1671 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/262 ,  H04W52/286 ,  H04W52/32 ,  H04W52/58

Abstract: Methods and devices in a wireless communication system are provided, in which a first portion and a second portion of signals are transmitted on a physical channel to a first transceiver from a second transceiver. A method for controlling transmission parameters in the wireless communication system comprises the steps of: transmitting an indication indicating that the first and the second receiver processing algorithms are used in the first transceiver to process the first and second portions, respectively, of signals received on the physical channel; receiving the indication at the second transceiver; and adjusting, at the second transceiver in response to the indication, a transmission parameter for at least one of the first and second portions of signals to be transmitted on the physical channel to the first transceiver. The indication could be transmitted from the first transceiver, or it could be determined through evaluations carried out at the second transceiver.

Abstract translation: 提供了一种在无线通信系统中的方法和设备，其中信号的第一部分和第二部分在物理信道上从第二收发器发送到第一收发器。 一种用于控制无线通信系统中的传输参数的方法，包括以下步骤：发送指示在第一收发信机中使用第一和第二接收机处理算法的指示，分别处理在第一和第二收发信机上接收的信号的第一和第二部分 物理通道; 在所述第二收发器处接收所述指示; 以及响应于所述指示在所述第二收发器处调整要在所述物理信道上发送到所述第一收发器的信号的所述第一和第二部分信号中的至少一个的传输参数。 该指示可以从第一收发器发送，或者可以通过在第二收发器处执行的评估来确定。

公开(公告)号：US20100238981A1

公开(公告)日：2010-09-23

申请号：US12727880

申请日：2010-03-19

Applicant: Vijay Nagarajan ,  Louis Scharf ,  Anami P. Narayan

Inventor： Vijay Nagarajan ,  Louis Scharf ,  Anami P. Narayan

IPC: H04B1/00

CPC classification number: H04B1/7107 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/709727

Abstract: A receiver employs low-rate processing to synthesize the effect of high-rate interference in a received multi-rate signal. Each high-rate subchannel is analyzed on its low-rate descendents to produce symbol estimates for each low-rate symbol interval. The symbol estimates are applied to low-rate descendent subchannels, which are then combined to synthesize the effects of the high-rate interference. An interference canceller processes the synthesized interference with the received signal for producing an interference-cancelled signal. Alternatively, analogous steps may be applied at high-rate to analyze, synthesize, and cancel the effects of low-rate interference in a multi-rate signal.

Abstract translation: 接收机采用低速率处理来合成接收的多速率信号中的高速率干扰的影响。 在其低速率后代分析每个高速率子信道，以对每个低速率符号间隔产生符号估计。 符号估计适用于低速率后代子信道，然后将其合并，以合成高速率干扰的影响。 干扰消除器处理与接收信号的合成干扰以产生干扰消除信号。 或者，可以以高速率应用类似的步骤来分析，合成和消除多速率信号中的低速率干扰的影响。

公开(公告)号：US20100238980A1

公开(公告)日：2010-09-23

申请号：US12408939

申请日：2009-03-23

Applicant: Douglas A. Cairns ,  Elias Jonsson ,  Kazuyoshi Uesaka

Inventor： Douglas A. Cairns ,  Elias Jonsson ,  Kazuyoshi Uesaka

IPC: H04B1/707

CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/709727 ,  H04L25/0216

Abstract: The placement of processing delays may be adjusted to facilitate signal reception. In an example embodiment, a composite signal having multiple signal images corresponding to multiple reception delays is received. A root-mean-square (RMS) delay spread is ascertained for the multiple reception delays that correspond to the multiple signal images of the composite signal. A set of temporal points is produced responsive to the RMS delay spread. Multiple processing delays are placed based on the set of temporal points. In different example implementations, the set of temporal points (e.g., of a grid) may be produced by adjusting a spacing between temporal points, by adjusting a total number of temporal points in the set, or by changing a center location of the set. The spacing and number of points may be adjusted responsive to the RMS delay spread. The center location may be adjusted responsive to at least one calculated delay.

Abstract translation: 可以调整处理延迟的布置以促进信号接收。 在示例实施例中，接收具有对应于多个接收延迟的多个信号图像的复合信号。 确定对应于复合信号的多个信号图像的多个接收延迟的均方根（RMS）延迟扩展。 响应于RMS延迟扩展产生一组时间点。 基于一组时间点放置多个处理延迟。 在不同的示例实现中，可以通过调整时间点之间的间隔，通过调整集合中的时间点的总数，或者通过改变集合的中心位置来产生时间点集合（例如，网格）。 响应于RMS延迟扩展可以调整点的间隔和数量。 可以响应于至少一个计算的延迟来调整中心位置。

公开(公告)号：US07782987B2

公开(公告)日：2010-08-24

申请号：US10799322

申请日：2004-03-12

Applicant: Elias Jonsson

Inventor： Elias Jonsson

IPC: H04L5/12

CPC classification number: H04L1/20 ,  H04B2201/709727 ,  H04L1/0026 ,  H04L25/03006

Abstract: A processing circuit and method generate signal quality estimates based on scaling measured inter-symbol interference (ISI) in a received signal according to a cancellation metric corresponding to ISI cancellation performance of the receiver. By accounting for ISI cancellation performance of the receiver based on a simple scaling metric, accurate received signal quality measurements are obtained in a manner that accounts for un-cancelled ISI in the received signal without requiring use of potentially complex multipath combining weight calculations in the signal quality calculation. Signal quality estimation results may be used for sending corresponding Channel Quality Indicators, communication link transmit power control commands, etc. In some embodiments, the cancellation metric is maintained as a dynamic value based on measured ISI cancellation performance, while in other embodiments the cancellation metric comprises a pre-configured value stored in memory, for example.

Abstract translation: 处理电路和方法根据对应于接收机的ISI消除性能的消除度量，基于接收信号中的测量符号间干扰（ISI）的缩放来生成信号质量估计。 通过基于简单的缩放度量来考虑接收机的ISI取消性能，以接收到的信号中考虑未取消的ISI的方式获得准确的接收信号质量测量，而不需要在信号中使用潜在的复数多径组合权重计算 质量计算。 信号质量估计结果可以用于发送相应的信道质量指示符，通信链路发射功率控制命令等。在一些实施例中，基于测量的ISI消除性能将消除度量维持为动态值，而在其他实施例中，消除度量 包括例如存储在存储器中的预配置值。

公开(公告)号：US07769078B2

公开(公告)日：2010-08-03

申请号：US10959923

申请日：2004-10-06

Applicant: Douglas Cairns ,  Ali S. Khayrallah ,  Gregory E. Bottomley

Inventor： Douglas Cairns ,  Ali S. Khayrallah ,  Gregory E. Bottomley

IPC: H04B1/00

CPC classification number: H04B1/712 ,  H04B1/709 ,  H04B1/7117 ,  H04B2201/709727

Abstract: Channel and correlation characteristics are determined for a composite signal. Respective combining weights for information from the composite signal are determined for respective ones of a plurality of candidate delays based on the determined channel and correlation characteristics. A group of delays, e.g., RAKE correlator delays or chip equalizer filter taps, is selected from the plurality of candidate delays based on the determined weights. Information from the composite signal for the selected delays is processed according to a spreading code to generate a symbol estimate. The invention may be embodied as methods, apparatus and computer program products.

Abstract translation: 为复合信号确定通道和相关特性。 基于确定的信道和相关特性，针对多个候选延迟中的各个确定来自复合信号的信息的相应组合权重。 基于所确定的权重，从多个候选延迟中选择一组延迟，例如RAKE相关器延迟或码片均衡器滤波器抽头。 根据扩展码处理来自所选延迟的复合信号的信息以产生符号估计。 本发明可以体现为方法，装置和计算机程序产品。

公开(公告)号：US07751511B2

公开(公告)日：2010-07-06

申请号：US11550901

申请日：2006-10-19

Applicant: Andres Reial ,  Karin Engdahl ,  Bo Göransson

Inventor： Andres Reial ,  Karin Engdahl ,  Bo Göransson

IPC: H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04L1/00 ,  H04L25/08

CPC classification number: H04B1/712 ,  H04B2201/709727 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A subset of modeled impairment correlation terms are selected for use in received signal processing. According to one embodiment, a subset of modeled impairment correlation terms is selected and a composite impairment correlation term is determined based on the subset of modeled impairment correlation terms. The composite impairment correlation term may be determined by scaling the modeled impairment correlation terms included in the subset by respective model fitting parameters. The scaled modeled impairment correlation terms are then combined to form the composite impairment correlation term. The subset of modeled impairment correlation terms may be selected based on their respective model fitting parameters. In one embodiment, the modeled impairment terms having a model fitting parameter that satisfy a threshold are included in the subset while those that do not are excluded. The composite impairment correlation term may be used for received signal processing, e.g., demodulation or signal-to-interference estimation.

Abstract translation: 选择模型损害相关项的子集用于接收信号处理。 根据一个实施例，选择模型化损害相关项的子集，并且基于建模的损害相关项的子集来确定复合损害相关项。 复合损害相关项可以通过用相应的模型拟合参数缩放包括在子集中的建模损伤相关项来确定。 然后将缩放的建模的损伤相关项组合以形成复合损害相关项。 可以基于它们各自的模型拟合参数来选择建模的损伤相关项的子集。 在一个实施例中，具有满足阈值的模型拟合参数的建模的损伤项包括在子集中，而不被排除。 复合损害相关项可以用于接收信号处理，例如解调或信号对干扰估计。

公开(公告)号：US07738534B2

公开(公告)日：2010-06-15

申请号：US11566820

申请日：2006-12-05

Applicant: Gregory E. Bottomley ,  Yi-Pin Eric Wang

Inventor： Gregory E. Bottomley ,  Yi-Pin Eric Wang

IPC: H04B1/707

CPC classification number: H04B1/712 ,  H04B1/7107 ,  H04B1/7115 ,  H04B2201/709727 ,  H04J13/0077

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07684523B2

公开(公告)日：2010-03-23

申请号：US11536485

申请日：2006-09-28

Applicant: Shu Wang ,  Sang G. Kim

Inventor： Shu Wang ,  Sang G. Kim

IPC: H04L27/06

CPC classification number: H04B1/7105 ,  H04B1/712 ,  H04B2201/70701 ,  H04B2201/709727 ,  H04J13/00 ,  H04L25/022 ,  H04L25/0226

Abstract: A method of determining at least one channel for channel response in a wireless communication system is disclosed. More specifically, the method comprises receiving a plurality of signals from a transmitting end, wherein the signals comprise a plurality of pilot symbols and a plurality of data symbols, determining weight value of each pilot symbol, assigning the determined each weight value to each pilot symbol, and demodulating each data symbol by using respective information of the weight value corresponding to each pilot symbol.

Abstract translation: 公开了一种在无线通信系统中确定至少一个信道用于信道响应的方法。 更具体地，该方法包括从发送端接收多个信号，其中信号包括多个导频符号和多个数据符号，确定每个导频符号的权重值，将确定的每个权重值分配给每个导频符号 并且通过使用与每个导频符号对应的权重值的相应信息来解调每个数据符号。

公开(公告)号：US20090323777A1

公开(公告)日：2009-12-31

申请号：US12147260

申请日：2008-06-26

Applicant: Yi-Pin Eric Wang ,  Hakan B. Bjorkegren ,  Gregory E. Bottomley

Inventor： Yi-Pin Eric Wang ,  Hakan B. Bjorkegren ,  Gregory E. Bottomley

IPC: H04B1/707 ,  H04B1/10

CPC classification number: H04B1/712 ,  H04B1/7107 ,  H04B1/71072 ,  H04B2201/709727

Abstract: Methods and apparatus are disclosed for suppressing both own-cell and other-cell interference in the processing of multiple signals of interest in a received composite signal. In an exemplary embodiment of the methods disclosed herein, combining weights for each of a first plurality of signals of interest in a composite information signal are computed, based on first shared signal correlation data computed from the composite information signal. A reduced-interference composite signal is calculated from the composite information signal, using, for instance, subtractive interference cancellation or interference projection techniques. Combining weights for processing each of a second plurality of signals of interest are computed as a function of second shared signal correlation data corresponding to the reduced-interference composite signal. Corresponding apparatus, including G-Rake and chip equalizer embodiments are also disclosed.

Abstract translation: 公开了用于在接收到的复合信号中处理多个感兴趣信号的同时抑制自身小区和其他小区干扰的方法和装置。 在本文公开的方法的示例性实施例中，基于从复合信息信号计算的第一共享信号相关数据来计算组合信息信号中的感兴趣的第一多个信号中的每一者的权重。 使用例如减法干扰消除或干涉投影技术，从复合信息信号计算降低干扰的复合信号。 作为与减小干涉复合信号对应的第二共享信号相关数据的函数，计算用于处理感兴趣的第二多个信号中的每一个的组合权重。 还公开了包括G-Rake和码片均衡器实施例的相应装置。