公开(公告)号：WO2011008412A1

公开(公告)日：2011-01-20

申请号：PCT/US2010/039155

申请日：2010-06-18

Applicant: ALCATEL-LUCENT USA INC. ,  RAO, Anil, M. ,  YE, Henry ,  SONI, Robert, A.

Inventor： RAO, Anil, M. ,  YE, Henry ,  SONI, Robert, A.

IPC: H04B1/707

CPC classification number: H04B1/71075 ,  H04B1/71072

Abstract: To address the need for new interference cancellation techniques that are able to deliver adequate performance but with reduced processing requirements, various embodiments are described. In some embodiments, a receiving device demodulates and decodes (201) at least one first-group user from a multi-user input signal. This multi-user input signal includes at least one first-group user and at least one second-group user, the first-group users having a shorter transmission time interval (TTI) than the second-group users. The receiving device reconstructs 202) an interference signal for each of the first-group users that were successfully decoded and subtracts (203) each interference signal from the multi-user input signal to generate an interference-canceled signal. The receiving device then demodulates and decodes (204) at least one second-group user using this interference-canceled signal.

Abstract translation: 为了解决能够提供足够的性能但是减少处理要求的新的干扰消除技术的需要，描述了各种实施例。 在一些实施例中，接收设备从多用户输入信号解调和解码（201）至少一个第一组用户。 该多用户输入信号包括至少一个第一组用户和至少一个第二组用户，第一组用户具有比第二组用户更短的传输时间间隔（TTI）。 接收装置重建202）成功解码的每个第一组用户的干扰信号，并从多用户输入信号中减去（203）每个干扰信号以产生干扰消除信号。 然后，接收设备使用该干扰消除信号来解调（204）至少一个第二组用户。

公开(公告)号：WO2008113247A1

公开(公告)日：2008-09-25

申请号：PCT/CN2008/000262

申请日：2008-02-01

Applicant: 中兴通讯股份有限公司 ,  张宇眉 ,  辛雨 ,  张欣 ,  杨大成

Inventor： 张宇眉 ,  辛雨 ,  张欣 ,  杨大成

IPC: H04Q7/22

CPC classification number: H04B1/71075

Abstract: The present invention provides a parallel interference cancellation apparatus for a reverse link in a high rate packet data system and the method thereof. The method therein includes the following steps: A. transferring payload size, code rate and repetition parameter to a parallel interference cancellation unit according to the definition in the high rate packet data protocol; B. the parallel interference cancellation unit executes the following parallel interference cancellation steps: B1. using matched filters to filter sub-frame data of the user, and sending a plurality of filtered sub-frame data to a storage unit one by one; B2. combining a plurality of filtered sub-frame data in the storage unit according to the payload size, code rate and/or repetition parameter, so as to generate one-shot data; B3. reacquiring full-frame data in agreement with the modulation rate from the one-shot data according to the payload size, code rate and/or repetition parameter; and B4. executing the parallel interference cancellation for the reacquired full-frame data.

公开(公告)号：WO2007102897A3

公开(公告)日：2007-11-29

申请号：PCT/US2006061163

申请日：2006-11-21

Applicant: QUALCOMM INC ,  BANISTER BRIAN CLARKE

Inventor： BANISTER BRIAN CLARKE

IPC: H04B1/707

CPC classification number: H04B1/71075 ,  H04B1/712 ,  H04B2001/70935

Abstract: Techniques for performing interference cancellation in a wireless (eg, CDMA) communication system are described. For a single-sector interference canceller, received samples are processed (e.g., despread) to isolate a signal from a transmitter (e.g., a base station) and obtain input samples. The input samples are transformed based on a first transform (e.g., a fast Hadamard transform) (416) to obtain received symbols for multiple orthogonal channels (e.g., Walsh bins) . The received symbols for the multiple orthogonal channels are scaled with multiple gains (440) to obtain scaled symbols. The gains may be related to the inverses of the power estimates for the orthogonal channels. The scaled symbols are transformed based on a second transform (e.g., an inverse fast Hadamard transform) (442) to obtain output samples, which are processed (e.g., spread) to obtain interference-canceled samples having the signal from the transmitter suppressed.

Abstract translation: 描述了在无线（例如CDMA）通信系统中执行干扰消除的技术。 对于单扇区干扰消除器，接收的样本被处理（例如，去扩展）以隔离来自发射机（例如，基站）的信号并获得输入采样。 基于第一变换（例如，快速Hadamard变换）（416）来变换输入样本，以获得用于多个正交信道（例如沃尔什bin）的接收符号。 多个正交信道的接收符号用多个增益（440）缩放以获得缩放的符号。 增益可能与正交信道的功率估计的逆相关。 基于第二变换（例如，逆快速哈达玛变换）（442）来转换经缩放的符号，以获得被处理（例如扩展）以获得具有来自发射机的信号被抑制的干扰消除样本的输出采样。

公开(公告)号：WO2007058754A3

公开(公告)日：2007-07-05

申请号：PCT/US2006042130

申请日：2006-10-30

Applicant: TENSORCOMM INC

Inventor： GUESS TOMMY ,  MCCLOUD MICHAEL L

IPC: H04B1/00 ,  H04B1/707 ,  H04B7/216

CPC classification number: H04B1/7107 ,  H04B1/71072 ,  H04B1/71075 ,  H04B1/7115 ,  H04B7/0634 ,  H04L25/03006 ,  H04L2025/03375

Abstract: An interference-canceling receiver processes coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels from multiple transmit antennas to multiple receive antennas in a closed-loop transmit-diversity channel. The receiver provides for repeated use of symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimation. Receivers may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware, either within a Rake receiver at the finger level or outside the Rake at the user or subchannel symbol level. The receiver may be employed in user equipment on the forward link or in a base station on the reverse link.

Abstract translation: 干扰消除接收机处理通过频率选择通信信道从闭环发射分集信道中的多个发射天线传播到多个接收天线的编码，多址，扩频传输。 接收机提供重复使用符号估计加权，具有稳定步长的减法消除和混合判决符号估计。 接收器可以在软件或编程硬件中明确设计，适应和实现，或隐含地在标准的基于Rake的硬件中，无论是在手指级别的Rake接收器内还是在用户或子信道符号级别的Rake外部。 接收机可以被用在前向链路上的用户设备中或在反向链路上的基站中。

公开(公告)号：WO2007058752A1

公开(公告)日：2007-05-24

申请号：PCT/US2006/042036

申请日：2006-10-30

Applicant: TENSORCOMM, INC.

Inventor： GUESS, Tommy ,  MCCLOUD, Michael, L. ,  NAGARAJAN, Vijay ,  SINGH LAMBA, Gagandeep

IPC: H03D1/04

CPC classification number: H04B1/7097 ,  H04B1/71075 ,  H04B1/712 ,  H04B2201/70702

Abstract: A receiver is configured for canceling intra-cell and inter-cell interference in coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels. The receiver employs iterative symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware either within the Rake (i.e., at the finger level) or outside the Rake (i.e., at the user or subchannel symbol level).

Abstract translation: 接收机被配置为消除通过频率选择性通信信道传播的编码，多址，扩频传输中的小区内和小区间干扰。 接收机采用迭代符号估计加权，具有稳定步长的减法消除和混合判决符号估计。 接收器实施例可以在软件或编程硬件中明确实现，或者隐含地在Rake（即，在手指级）处或Rake外部（即在用户或子信道符号级别）处于标准Rake的硬件中。

公开(公告)号：WO2007038017A2

公开(公告)日：2007-04-05

申请号：PCT/US2006/036004

申请日：2006-09-15

Applicant: TENSORCOMM, INC.

Inventor： MCCLOUD, Michael, L. ,  GUESS, Tommy

IPC: H03D1/04 ,  H04B1/10

CPC classification number: H04B1/71075 ,  H04B1/7105 ,  H04B1/712

Abstract: An interference-canceling receiver is configured for cancelling inter-symbol interference due to both inter- and intra-channel interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency-selective communication channels. The receiver mitigates the effects of post-cursor inter-symbol interference using feedback of previously estimated symbols, and mitigates pre-cursor inter-symbol interference using an interference canceller, such as an iterative interference canceller.

Abstract translation: 干扰消除接收器被配置为用于消除由于在通过频率选择性通信信道传播的编码多址接入扩频传输中的信道内和信道内干扰而导致的码元间干扰。 接收器使用先前估计的符号的反馈减轻了后期符号间干扰的影响，并且使用诸如迭代干扰消除器之类的干扰消除器来减轻前置符号间干扰。

公开(公告)号：WO2004052038A1

公开(公告)日：2004-06-17

申请号：PCT/CN2003/000631

申请日：2003-08-05

IPC: H04Q7/34

CPC classification number: H04B1/71075 ,  H04B1/7105

Abstract: The invention discloses a multiuser receiving means of a uplink dedicated physical channel in WCDMA system, which involves the multiuser detection technique in WCDMA cell mobile communication system the multiuser detection technique is an enhanced technique of CDMA system, which applies of double weighting parallel interference cancellation and its simply method in order to greatly enhance the capability of the traditional method of parallel interference cancellation. The invention applies the simple method of double weighting parallel interference cancellation to receive signal in a uplink dedicated physical channel, which greatly enhances the receiving capability of uplink dedicated physical channel.

公开(公告)号：WO2004028005A1

公开(公告)日：2004-04-01

申请号：PCT/US2003/029597

申请日：2003-09-19

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： ZEIRA, Eldad ,  ZEIRA, Ariela

IPC: H04B1/10

CPC classification number: H04L1/0001 ,  H04B1/71075 ,  H04B7/022 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: At least one desired communication signal is received by a receiver. The at least one desired communication signal is transmitted in a wireless format of a cell. A plurality of communication signals are received. Communication signals are selected from the plurality. The selected communication signals include each desired communication signal and at least one communication signal originating from another cell. A channel estimate is produced for each selected communication signal. Data is jointly detected for the selected communication signals.

Abstract translation: 至少一个期望的通信信号被接收机接收。 至少一个期望的通信信号以小区的无线格式发送。 接收多个通信信号。 从多个选择通信信号。 所选择的通信信号包括每个期望的通信信号和源自另一小区的至少一个通信信号。 为每个所选择的通信信号产生信道估计。 对所选择的通信信号共同检测数据。

公开(公告)号：WO2002095971A1

公开(公告)日：2002-11-28

申请号：PCT/EP2002/005115

申请日：2002-05-08

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  SEEGER, Alexander ,  VOGL, Ulrich

Inventor： SEEGER, Alexander ,  VOGL, Ulrich

IPC: H04B1/707

CPC classification number: H04B1/71075 ,  H04B1/711 ,  H04B1/7117

Abstract: Die Erfindung betrifft ein adaptives CDMA-Interferenzunterdrückungsverfahren, sowie eine Empfangseinrichtung (4) für ein CDMA-Nachrichtenübertragungssystem (1), welche einen ersten Rake-Empfänger (5) aufweist, welcher aus von mehreren verschiedenen Sendeeinheiten (2, 3) gemeinsam empfangenen Signalen ein einer ersten Sendeeinheit (2) zugeordnetes Signal (r1(k)) herausfiltert, einen zweiten Rake-Empfänger (6), welcher aus den von den mehreren verschiedenen Sendeeinheiten (2, 3) gemeinsam empfangenen Signalen ein ei-ner zweiten Sendeeinheit (3) zugeordnetes Signal (r2(k)) herausfiltert, und eine adaptive Interferenzunterdrückungseinrichtung (10), welche in dem der ersten Sendeeinheit (2) zugeordneten, herausgefilterten Signal (r1(k) enthaltene Interferenzen unterdrückt, wobei die Interferenzunterdrückungseinrichtung (10) eine "soft-bit" Entscheidungseinrichtung (9) enthält, welcher als Eingabesignal das der zweiten Sendeeinheit (3) zugeordnete, herausgefilterte Signal (r2(k)) zugeführt wird, und deren Ausgabesignal (x2(k)) zur Berechnung von in dem der ersten Sendeeinheit (2) zugeordneten, herausgefilterten Signal (r1k) enthaltenen Interferenzen verwendet wird. Gemäß einem weiteren Aspekt der Erfindung weist die Interferenzunterdrückungseinrichtung (10) eine Mehrphasenstruktur auf, wobei die zur Interferenzunterdrückung verwendeten Filterkoeffizienten (w) in Abhhängigkeit von der momentanen Phase (l) gewählt werden, in der sich die Interferenzunterdrückungseinrichtung (10) befindet.

Abstract translation: 本发明涉及一种自适应CDMA干扰抑制方法，和一个接收装置用于CDMA通信系统（1），包括：（5）由若干不同的传输单元（2，3）共同接收的信号的的第一瑞克接收机（4） 与信号相关联的第一传输单元（2）（R 1（k））的过滤出的第二分离多径接收器（6），其从共同接收来自所述多个不同的传输单元（2，3）的信号的第二广播单元（3） 通过抑制干扰给定相关联的信号（R2（k））的过滤掉，并且在所述（10），其设置的自适应干扰消除装置的第一传输单元（2）相关联的滤出信号（R 1（k）时，所述干扰消除装置（10）具有一个“软 包含位“判定装置，其被指定为输入信号（9），所述第二发送部（3）中，过滤出的信号（R 2（k））的至 被执行，和（x2（k））的用于计算所述第一传输单元（2）相关联的滤除信号（R1K）含有干扰的输出信号。 根据本发明的进一步的方面，所述干扰抑制装置（10）的多相结构，其中用于干扰抑制（w）的在Abhhängigkeit上的瞬时相位（L）的滤波器系数被选用，其中所述干扰抑制装置（10）所在的位置。

公开(公告)号：WO02051023A2

公开(公告)日：2002-06-27

申请号：PCT/SE2001/002801

申请日：2001-12-14

IPC: H04J13/00 ,  H04B1/10 ,  H04B1/7107 ,  H04B1/707

CPC classification number: H04B1/71072 ,  H04B1/71075 ,  H04B2001/71077

Abstract: The invention has the object of determining the optimum weighting coefficient for each channel in a subtractive interference canceller (IC). A weighting coefficient determining method in a subtrative interference canceller for handling digital radio communications, characterized in that complex weighting coefficients are set so as to minimize the power of an interference cancellation residual signal for each channel in each stage.

Abstract translation: 本发明的目的是在减法干扰消除器（IC）中确定每个通道的最佳加权系数。 一种用于处理数字无线电通信的辅助干扰消除器中的加权系数确定方法，其特征在于，复数加权系数被设置为使每个级中的每个信道的干扰消除残差信号的功率最小化。