公开(公告)号：US09351307B2

公开(公告)日：2016-05-24

申请号：US14639058

申请日：2015-03-04

申请人： QUALCOMM Incorporated

发明人： Tao Luo ,  Michael Lee McCloud ,  Brian Clarke Banister ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Hao Xu ,  Tingfang Ji ,  Siddhartha Mallik ,  Alexei Yurievitch Gorokhov ,  Arumugam Chendamarai Kannan

IPC分类号： H04W72/08 ,  H04L5/00 ,  H04B1/7107 ,  H04J11/00 ,  H04L1/00 ,  H04B7/06 ,  H04W24/10

CPC分类号： H04W72/082 ,  H04B1/7107 ,  H04B7/0632 ,  H04B7/068 ,  H04B7/0684 ,  H04J11/005 ,  H04L1/0026 ,  H04L5/0048 ,  H04W24/10

摘要： Reported CSI may not reflect non-cancelable CRS interference received from an interfering cell, such as when the CSI is computed when CRS interference is not received. To address the issue, a user equipment (UE) may determine an interference cancelation/suppression efficiency (CSE) associated with canceling/suppressing interference from interfering cells. In addition, based on the determined CSE, a UE may compute CSI such that the CSI reflects the true cancelation efficiency of the UE with respect to interfering cell signals. When computing the CSI based on the determined CSE, the UE may report that the CSI is worse than it is to reflect the UE's true cancelation efficiency with respect to the interfering cell signals.

摘要翻译： 报告的CSI可能不反映从干扰小区接收的不可取消的CRS干扰，例如当没有接收到CRS干扰时计算CSI。 为了解决该问题，用户设备（UE）可以确定与抵消/抑制来自干扰小区的干扰相关联的干扰消除/抑制效率（CSE）。 另外，基于所确定的CSE，UE可以计算CSI，使得CSI相对于干扰小区信号反映UE的真实消除效率。 当基于确定的CSE计算CSI时，UE可以报告CSI比反映UE相对于干扰小区信号的真实消除效率更差。

公开(公告)号：US09237515B2

公开(公告)日：2016-01-12

申请号：US12533495

申请日：2009-07-31

申请人： Michael M. Wang

发明人： Michael M. Wang

IPC分类号： H04W24/00 ,  H04W48/20 ,  H04B1/7107 ,  H04L25/02 ,  H04L25/03

CPC分类号： H04W48/20 ,  H04B1/71072 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L25/0228 ,  H04L25/03006

摘要： Techniques for performing cell detection with successive detection and cancellation (SDC) are described. For SDC, pilots from stronger cells may be canceled from a received signal at a user equipment (UE) so that weaker cells may be detected as a result of reduced interference from the stronger cells. In one design, a UE processes a received signal to detect for a cell and determines whether the detected cell is sufficiently strong. If the cell is sufficiently strong, then the UE cancels the interference due to the detected cell from the received signal and further processes an interference-canceled signal to detect for another cell. The UE may detect for cells in a set of cells in a sequential order, from the strongest cell to the weakest cell. The UE may terminate detection when a cell not sufficiently strong is detected or when all cells in the set are detected.

摘要翻译： 描述了用连续检测和消除（SDC）进行小区检测的技术。 对于SDC，来自较强小区的导频可以在用户设备（UE）处从接收到的信号中消除，从而可以通过来自较强小区的干扰减少来检测较弱的小区。 在一种设计中，UE处理接收的信号以检测小区并确定所检测的小区是否足够强。 如果小区足够强，则UE从接收到的信号中消除由于检测到的小区引起的干扰，并进一步处理干扰消除信号以检测另一小区。 UE可以按照从最强小区到最弱小区的顺序检测一组小区中的小区。 当检测到不够牢固的小区时，或者当检测到该组中的所有小区时，UE可以终止检测。

公开(公告)号：US09094250B2

公开(公告)日：2015-07-28

申请号：US14129151

申请日：2012-06-21

申请人： Andreas Cedergren ,  Lennart Morén ,  Anders Wallén

发明人： Andreas Cedergren ,  Lennart Morén ,  Anders Wallén

IPC分类号： H03D1/06 ,  H04L25/03 ,  H04B1/7107 ,  H04L25/08 ,  H04J11/00

CPC分类号： H04L25/03305 ,  H04B1/71072 ,  H04J11/004 ,  H04L25/08

摘要： A method of channel cancellation for a cellular communication device comprises receiving a signal comprising desired symbols and interfering symbols; regenerating a symbol sequence of interfering symbols expected to be received; determining, prior to any complete decoding of the interfering symbols by the cellular communication device, whether received interfering symbols agree with the regenerated interfering symbols, and then if the received interfering symbols are determined to agree with regenerated interfering symbols, subtracting the regenerated symbol sequence from the received signal to form an adapted signal, or if the received interfering symbols are determined not to agree with regenerated interfering symbols, omitting at least the regenerated interfering symbols not agreeing with the received interfering symbols from the subtracting of the regenerated symbol sequence from the received signal when forming the adapted signal; and then decoding the desired symbols from the adapted signal.

摘要翻译： 蜂窝通信设备的信道消除方法包括：接收包含所需符号和干扰符号的信号; 重新生成期望接收的干扰符号的符号序列; 在蜂窝通信设备对干扰符号的任何完整解码之前，确定接收到的干扰符号是否与再生的干扰符号一致，然后如果接收到的干扰符号被确定为与再生的干扰符号一致，则将再生的符号序列从 接收到的信号以形成适配信号，或者如果接收的干扰符号被确定为不与再生的干扰符号一致，则从接收到的再生符号序列的减法中至少省略与接收的干扰符号不一致的再生的干扰符号 形成适应信号时的信号; 然后从所适配的信号中解码所需符号。

公开(公告)号：US09055545B2

公开(公告)日：2015-06-09

申请号：US14076095

申请日：2013-11-08

申请人： QUALCOMM INCORPORATED

发明人： Peter J. Black ,  Christopher G. Lott ,  Rashid A. Attar ,  Yu-Cheun Jou ,  Jun Ma

IPC分类号： H04W36/18 ,  H04W52/54 ,  H04B1/7107 ,  H04L1/00 ,  H04L25/03 ,  H04W52/12 ,  H04W52/08 ,  H04W52/36 ,  H04W52/40

CPC分类号： H04W52/54 ,  H04B1/7107 ,  H04B1/71072 ,  H04L1/0048 ,  H04L1/0052 ,  H04L25/03006 ,  H04W36/18 ,  H04W52/08 ,  H04W52/12 ,  H04W52/362 ,  H04W52/40

摘要： Techniques for improving the capacity of a wireless communications system using interference cancellation (IC). In an early decoding and IC aspect, a frame transmitted from a user to a base station may be decoded prior to the entire frame being received by the base station. The remaining portion of the frame may then be re-constructed at the base station prior to its reception, and cancelled from the receive signal to reduce the interference to frames received from other users. In a power control aspect for early decoding and IC, the power control target level at a local base station may be adjusted in response to successfully early decoding a frame, without affecting the overall outer loop power control operation. Further aspects include late decoding techniques for utilizing the IC of other users' signals to improve the probability of decoding a given user's frames, as well as techniques for traffic channel demodulation using channel re-estimation.

摘要翻译： 使用干扰消除（IC）来提高无线通信系统容量的技术。 在早期的解码和IC方面，可以在从基站接收的整个帧之前对从用户发送到基站的帧进行解码。 帧的剩余部分然后可以在其接收之前在基站重新构建，并且从接收信号中取消，以减少对从其他用户接收到的帧的干扰。 在用于早期解码和IC的功率控制方面，本地基站的功率控制目标电平可以响应成功地早期解码帧来调整，而不影响整个外环功率控制操作。 其他方面包括用于利用其他用户信号的IC来提高对给定用户的帧进行解码的概率的后期解码技术，以及使用信道重新估计的业务信道解调技术。

公开(公告)号：US09036579B2

公开(公告)日：2015-05-19

申请号：US13732752

申请日：2013-01-02

申请人： QUALCOMM INCORPORATED

发明人： Raghavendra Shyam Anand ,  Yegnesh Srinivasan ,  Deepti Mani

IPC分类号： H04W24/02 ,  H04B1/7107

CPC分类号： H04W24/02 ,  H04B1/7107 ,  H04B2201/70722 ,  H04B2201/709709

摘要： Apparatus and methods for wireless communication in a wireless communication network include initiating a high speed downlink packet access (HSDPA) call to a user equipment (UE), applying a synchronization channel interference cancellation (SCHIC) algorithm to the HSDPA call, calculating synchronization channel (SCH) interference based on the application of the SCHICH algorithm to the HSDPA call, and eliminating the SCH interference from the HSDPA call.

摘要翻译： 无线通信网络中用于无线通信的装置和方法包括：向用户设备（UE）发起高速下行链路分组接入（HSDPA）呼叫，向HSDPA呼叫应用同步信道干扰消除（SCHIC）算法，计算同步信道 SCH）基于SCHICH算法应用于HSDPA呼叫的干扰，以及消除来自HSDPA呼叫的SCH干扰。

公开(公告)号：US06959065B2

公开(公告)日：2005-10-25

申请号：US09839510

申请日：2001-04-20

申请人： Erik Sparrman ,  Stefan Parkvall ,  Alex Murillo Barrera

发明人： Erik Sparrman ,  Stefan Parkvall ,  Alex Murillo Barrera

IPC分类号： H04B1/7107 ,  H03K5/01 ,  H03D1/04 ,  H03D1/06 ,  H03K6/04 ,  H04B1/10 ,  H04L1/10

CPC分类号： H04B1/7107 ,  H04B2201/7071

摘要： A system, method and apparatus for demodulating a received signal using a configurable receiver. The receiver performs the demodulation of a signal according to a selected interference cancellation demodulation scheme. The same receiver can be configured, by setting certain parameters, to behave as a successive interference cancellation (SIC) scheme receiver, a parallel interference cancellation (PIC) scheme receiver, or a hybrid interference cancellation (HIC) scheme receiver. In another aspect of the present invention, the receiver performs its demodulation operation using a single interference cancellation unit (ICU). In addition, the ICU's despreading and respreading functions may be performed by the same processing element.

摘要翻译： 一种使用可配置接收机解调接收信号的系统，方法和装置。 接收机根据选择的干扰消除解调方案执行信号的解调。 可以通过设置某些参数来配置相同的接收机，以表现为连续干扰消除（SIC）方案接收机，并行干扰消除（PIC）方案接收机或混合干扰消除（HIC）方案接收机。 在本发明的另一方面，接收机使用单个干扰消除单元（ICU）来执行其解调操作。 此外，ICU的解扩和重新发送功能可以由相同的处理元件执行。

公开(公告)号：US06882681B2

公开(公告)日：2005-04-19

申请号：US10018999

申请日：2001-04-19

申请人： Hiroyasu Sano

发明人： Hiroyasu Sano

IPC分类号： H04L27/14 ,  H04B1/7107 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/02 ,  H04B7/08 ,  H04B7/10 ,  H04J13/00 ,  H04L7/00 ,  H04B1/707

CPC分类号： H04B7/0897 ,  H04B1/7113 ,  H04B1/712

摘要： A path detector (140) detects a plurality of multi-path waves that have satisfied a predetermined standard from reverse spread signals, a plurality of adders (161) form beams on the basis of a path, a plurality of transfer path estimating sections (170) and complex conjugate calculators (163) calculate a transfer path estimation value, and based upon the result of the estimation, carry out a weighting process in accordance with the signal amplitude and a removing process of the phase variations. Moreover, a plurality of interference amount estimating sections (171) extract the amount of interference, a plurality of normalizing sections (172) normalize the signals that have been subjected to the phase variation removing process based upon the amount of interference, an adder (185) combines all the signals that have been normalized, and a data determining section (190) determines the signal that have been combined.

摘要翻译： 路径检测器（140）从反向扩展信号中检测到已经满足预定标准的多个多径波，多个加法器（161）基于路径形成波束，多个传输路径估计部分（170 ）和复共轭计算器（163）计算传输路径估计值，并且基于估计结果，根据信号幅度和相位变化的去除处理执行加权处理。 此外，多个干扰量估计部（171）提取干扰量，多个归一化部（172）根据干扰量对已经进行了相位变更消除处理的信号进行归一化，加法器（185 ）组合已经被归一化的所有信号，并且数据确定部（190）确定已被组合的信号。

公开(公告)号：US6157685A

公开(公告)日：2000-12-05

申请号：US995253

申请日：1997-12-19

申请人： Yoshinori Tanaka ,  Shuji Kobayakawa ,  Hiroyuki Seki ,  Takeshi Toda ,  Masafumi Tsutsui

发明人： Yoshinori Tanaka ,  Shuji Kobayakawa ,  Hiroyuki Seki ,  Takeshi Toda ,  Masafumi Tsutsui

IPC分类号： H04B1/10 ,  H04B1/707 ,  H04B1/7107 ,  H04B7/08 ,  H04B7/26 ,  H04W16/28 ,  H04W88/02 ,  H04B7/00

CPC分类号： H04B1/71075 ,  H04B7/086 ,  H04B7/0848

摘要： A multistage interference canceller equipment and interference canceller method for use, for example, in CDMA (Code Division Multiple Access) multibeam-antenna communication system includes in each stage an interference canceller unit which has a replica signal generator which generates from an input beam signal a first interference replica signal and outputs a first error signal, and an interference removal unit which receives from another replica signal generator a second interference replica signal, multiplies that second interference replica signal by conversion coefficients and subtracts an obtained signal from the first interference replica signal to produce a second error signal so that an error signal is generated for each signal beam from the interference replica signals of a local signal beam and other signal beams to eliminate interference.

摘要翻译： 例如在CDMA（码分多址）多波束天线通信系统中使用的多级干扰消除器设备和干扰消除器方法在每个阶段包括干扰消除器单元，其具有从输入波束信号a产生的副本信号发生器 第一干扰复制信号并输出​​第一误差信号，以及干扰去除单元，其从另一副本信号发生器接收第二干扰复制信号，通过转换系数乘以该第二干扰副本信号，并将获得的信号从第一干扰复制信号中减去到 产生第二误差信号，从而根据本地信号光束和其它信号光束的干扰复制信号为每个信号光束产生误差信号以消除干扰。

公开(公告)号：US6088383A

公开(公告)日：2000-07-11

申请号：US952342

申请日：1997-10-15

申请人： Toshinori Suzuki ,  Yoshio Takeuchi

发明人： Toshinori Suzuki ,  Yoshio Takeuchi

IPC分类号： H04B1/707 ,  H04B1/7107 ,  H04B15/00

CPC分类号： H04B1/71075

摘要： A spread spectrum signal demodulator receives a received signal including a plurality of spread spectrum signals, and comprises at least one signal strength suppressing means, which reduces a correlation signal outputted from a first correlation detecting means or replica signals until the correlation signal has been traveled through a replica signal generating means, a replica signal subtracting means and a second correlation detecting means. According to the invention, it is possible to improve interference cancellation capacity with a computational effort substantially comparable to that in a prior art replica signal cancellation system and improve interference cancellation performance with increasing number of interference cancellers irrespective of the magnitude of the correlation. With a sufficient number of interference cancellers provided, it is possible to obtain the same effect as obtainable with prior art decorrelation in a real time processing irrespective of the correlation magnitude.

摘要翻译： PCT No.PCT / JP97 / 00679 Sec。 371日期：1997年10月15日 102（e）日期1997年10月15日PCT提交1997年3月5日PCT公布。 公开号WO97 / 33401 日期1997年9月12日扩频信号解调器接收包括多个扩频信号的接收信号，并且包括至少一个信号强度抑制装置，其减少从第一相关检测装置输出的相关信号或复制信号，直到相关 已经通过复制信号产生装置，复制信号减法装置和第二相关检测装置行进信号。 根据本发明，可以通过与现有技术的复制信号消除系统基本上相当的计算能力来改进干扰消除能力，并且随着相关数量的大小而增加干扰消除器数量而改善干扰消除性能。 在提供足够数量的干扰消除器的情况下，可以获得与实际处理中的现有技术去相关可获得的效果相同的效果，而与相关幅度无关。

公开(公告)号：US6032026A

公开(公告)日：2000-02-29

申请号：US26322

申请日：1998-02-19

申请人： Hiroyuki Seki ,  Yoshinori Tanaka ,  Shuji Kobayakawa ,  Takeshi Toda ,  Masafumi Tsutsui

发明人： Hiroyuki Seki ,  Yoshinori Tanaka ,  Shuji Kobayakawa ,  Takeshi Toda ,  Masafumi Tsutsui

IPC分类号： G01R29/00 ,  G01R29/08 ,  H04B1/7107 ,  H04B7/005 ,  H04B7/26 ,  H04B17/00 ,  H04B17/345 ,  H04J13/00 ,  H04W24/00 ,  H04W52/08 ,  H04W52/24 ,  H04B15/00

CPC分类号： H04W52/24 ,  H04B1/71075

摘要： The invention provides a technique for measurement of a signal to interference power ratio wherein an SIR can be measured with a higher degree of accuracy without being influenced by a fast fading environment or an inter-station interference or noise environment. A signal to interference power ratio measuring apparatus includes a plurality of interference replica signal production sections for performing inverse diffusion processing for input signals originating from a received signal, performing temporary decision of information symbols regarding the input signals, performing diffusion processing again for the input signals and outputting resulting signals as interference replica signals, a plurality of subtractors for subtracting the interference replica signals from the received signal, an interference power detection section for detecting interference power information, a signal power detection section for detecting signal power information, and a signal to interference power ratio calculation section for calculating signal to interference power ratios from the interference power information and the signal power information.

摘要翻译： 本发明提供了一种用于测量信号与干扰功率比的技术，其中可以以更高的准确度测量SIR，而不受快速衰落环境或站间干扰或噪声环境的影响。 信号与干扰功率比测量装置包括多个干扰复制信号产生部分，用于对从接收信号产生的输入信号进行反扩散处理，执行关于输入信号的信息符号的临时决定，对输入信号再次执行扩散处理 并将所得信号作为干扰复制信号输出，用于从接收信号中减去干扰复制信号的多个减法器，用于检测干扰功率信息的干扰功率检测部分，用于检测信号功率信息的信号功率检测部分， 干扰功率比计算部分，用于从干扰功率信息和信号功率信息计算信号与干扰功率比。