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91. 发明申请

WO03013018A3 METHOD AND APPARATUS FOR JOINT DETECTION OF A CODED SIGNAL IN A CDMA SYSTEM 审中-公开
标题翻译：用于CDMA系统中编码信号的联合检测的方法和装置
公开(公告)号：WO03013018A3
公开(公告)日：2003-05-30
申请号：PCT/US0220547
申请日：2002-06-28
申请人： MOTOROLA INC
发明人： YU XIAOYONG
IPC分类号： H03M13/29 , H04B1/7105 , H04B1/7107 , H04L1/00 , H04B1/707
CPC分类号： H04L1/005 , H03M13/2957 , H03M13/6331 , H04B1/7105 , H04B1/7107
摘要： The present invention achieves the benefits of the improved joint detector previously disclosed with significantly less computation by, first, moving the backward substitution computation outside the detector's decoding iteration loop and, second, by moving the input buffer inside the iteration loop. The backward substitution computation is performed initially as part of a joint detection equalization stage prior to entering the decode iteration loop. Then with each decode iteration, the present invention generates a correction signal that is subtracted from the present input signal to produce the next input signal. Each correction signal is generated from a series of differences between the decoded symbols of the current iteration and those in the previous iteration. Thus, the present invention achieves the same performance improvement over conventional joint detectors as the improved joint detector previously disclosed but with dramatically less computational requirements.
摘要翻译：本发明通过首先在检测器的解码迭代循环之外移动反向替换计算，并且其次通过在迭代循环内部移动输入缓冲器来实现先前公开的改进的关节检测器的优点。在进入解码迭代循环之前，首先执行向后替换计算作为联合检测均衡阶段的一部分。然后，对于每个解码迭代，本发明产生从当前输入信号中减去产生下一个输入信号的校正信号。每个校正信号是从当前迭代的解码符号与先前迭代中的一系列差异产生的。因此，与先前公开的改进的联合检测器相比，本发明实现了与传统联合检测器相同的性能改进，但是具有显着更少的计算要求。

92. 发明申请

WO2003043239A1 METHODS AND COMMUNICATIONS TERMINALS FOR INCREASING CAPACITY CDMA COMMUNICATIONS NETWORKS 审中-公开
标题翻译：方法和通信终端增加容量CDMA通信网络
公开(公告)号：WO2003043239A1
公开(公告)日：2003-05-22
申请号：PCT/US2002/036014
申请日：2002-11-08
申请人： MOTOROLA INC.
发明人： OLIVER, John , MALLETTE, Alexandre , NGUYEN, Mymy
IPC分类号： H04J1/02
CPC分类号： H04B1/7107 , H04B1/7115
摘要： A method in a code division multiple access communication system having network infrastructure and a plurality of mobile terminals, including transmitting (210) composite signal comprising a synchronization signal and another non-orthogonal signal from the network infrastructure, receiving (220) the composite signal at the plurality of mobile terminals of the code division multiple access communication system, and increasing forward link capacity of the code division multiple access communication system by canceling (230) the synchronization signal from at least some of the plurality of mobile terminals.
摘要翻译：一种具有网络基础设施和多个移动终端的码分多址通信系统中的方法，包括从网络基础设施发送包括同步信号和另一非正交信号的复合信号（210），接收（220）复合信号码分多址通信系统的多个移动终端，并且通过从多个移动终端中的至少一些移除终端取消（230）同步信号，增加码分多址通信系统的前向链路容量。

93. 发明申请

WO02103920A3 METHODS AND SYSTEMS FOR REDUCING INTERFERENCE ACROSS COVERAGE CELLS 审中-公开
标题翻译：用于减少干扰覆盖细胞的方法和系统
公开(公告)号：WO02103920A3
公开(公告)日：2003-04-10
申请号：PCT/US0219550
申请日：2002-06-19
申请人： TELCORDIA TECH INC
发明人： DEMERS STEPHANIE , ZABLOCKY PAUL G , MOSHAVI SHIMON
IPC分类号： H04B1/7107 , H04B7/26 , H04W24/02 , H04W72/08 , H04B1/10 , H04B17/00
CPC分类号： H04W72/08 , H04B1/7107 , H04B2201/70702 , H04W24/02
摘要： Methods and systems are provided for reducing interference across coverage cells using base stations interconnected by a packet network. A wireless device monitors the channel signal strength of its serving cell and its neighboring cell (902). The serving cell collects measurements from the wireless devices within its cell (904, 906) and informs its neighboring cell when one of the wireless devices may be causing significant interference to the neighboring cell (910). The neighboring cell collects this information (912) and executes a multi-user detection and cancellation algorithm on a subset of these interfering wireless devices.
摘要翻译：提供了方法和系统，用于通过使用由分组网络互连的基站来减少跨覆盖小区的干扰。无线设备监视其服务小区及其相邻小区的信道信号强度（902）。服务小区从其小区（904,906）内的无线设备收集测量，并且当无线设备之一可能对相邻小区（910）造成显着干扰时，通知其相邻小区。相邻小区收集该信息（912）并在这些干扰无线设备的子集上执行多用户检测和消除算法。

94. 发明申请

WO2003013018A2 METHOD AND APPARATUS FOR JOINT DETECTION OF A CODED SIGNAL IN A CDMA SYSTEM 审中-公开
标题翻译：用于CDMA系统中编码信号的联合检测的方法和设备
公开(公告)号：WO2003013018A2
公开(公告)日：2003-02-13
申请号：PCT/US2002/020547
申请日：2002-06-28
申请人： MOTOROLA, INC.
发明人： YU, Xiaoyong
IPC分类号： H04B1/707
CPC分类号： H04L1/005 , H03M13/2957 , H03M13/6331 , H04B1/7105 , H04B1/7107
摘要： The present invention achieves the benefits of the improved joint detector previously disclosed with significantly less computation by, first, moving the backward substitution computation outside the detector's decoding iteration loop and, second, by moving the input buffer inside the iteration loop. The backward substitution computation is performed initially as part of a joint detection equalization stage prior to entering the decode iteration loop. Then with each decode iteration, the present invention generates a correction signal that is subtracted from the present input signal to produce the next input signal. Each correction signal is generated from a series of differences between the decoded symbols of the current iteration and those in the previous iteration. Thus, the present invention achieves the same performance improvement over conventional joint detectors as the improved joint detector previously disclosed but with dramatically less computational requirements.
摘要翻译：本发明通过首先在检测器的解码迭代循环之外移动后向置换计算，并且其次通过将输入缓存器移入内部来实现先前公开的改进的联合检测器的优点，其具有显着更少的计算迭代循环。在进入解码迭代循环之前，最初作为联合检测均衡阶段的一部分执行后向置换计算。然后，对于每次解码迭代，本发明生成从当前输入信号中减去的校正信号以产生下一个输入信号。每个校正信号由当前迭代的解码符号与先前迭代中的解码符号之间的一系列差异产生。因此，与先前公开的改进的联合检测器相比，本发明实现了与常规联合检测器相同的性能改进，但计算要求显着降低。

95. 发明申请

WO0231995A3 METHOD AND APPARATUS FOR SUBTRACTING MULTIPLE RAYS OF MULTIPLE INTERFERING RECEIVED SIGNALS 审中-公开
标题翻译：多种干扰信号接收多个方法的方法和装置
公开(公告)号：WO0231995A3
公开(公告)日：2003-02-06
申请号：PCT/US0128317
申请日：2001-09-10
申请人： ERICSSON INC , DENT PAUL
发明人： DENT PAUL
IPC分类号： H04B1/7107 , H04B1/707 , H04L25/03
CPC分类号： H04B1/7107 , H04B1/71072 , H04B2201/70703
摘要： A receiver decodes quantized and unquantized wanted data symbols from received signal samples. The receiver comprises a control adapted to process a group of currently received signal samples to determine a corresponding current set of unquantized wanted data symbols and an interfering waveform representative of a sum of other unwanted data symbols by subtracting an amount of a previously decoded set of quantized wanted symbols and a previously determined interfering waveform. A quantizer quantizes the determined current set of unquantized wanted symbols to obtain corresponding quantized symbols.
摘要翻译：接收机从接收到的信号样本中解码量化和未量化的有用数据符号。接收机包括适于处理一组当前接收到的信号采样的控制，以通过减去先前解码的量化集合的量来确定相应的当前未组合有用数据符号集合和表示其他不需要的数据符号的和的干扰波形想要的符号和先前确定的干扰波形。量化器量化所确定的未量化有用符号的当前集合以获得对应的量化符号。

96. 发明申请

WO0233840A3 METHOD AND APPARATUS FOR CANCELING PILOT INTERFERENCE IN A CDMA COMMUNICATION SYSTEM 审中-公开
标题翻译：在CDMA通信系统中取消导频干扰的方法和装置
公开(公告)号：WO0233840A3
公开(公告)日：2003-01-30
申请号：PCT/US0132223
申请日：2001-10-16
申请人： QUALCOMM INC
发明人： BUTLER BRIAN K , ZHANG HAITAO , BENDER PAUL E , JOU YU-CHEUN
IPC分类号： H04B1/707
CPC分类号： H04B1/7107
摘要： Techniques for canceling pilot interference in a wireless (e.g., CDMA) communication system. A received signal typically includes a number of signal instances (i.e., multipaths). For each multipath desired to be processed, the other multipaths act as interference on the desired multipath. If the pilot is generated based on a known data pattern (e.g., all zeros) and covered with a known channelization code (e.g., a Walsh code of zero), then the pilot in an interfering multipath may be estimated as the spreading sequence at a time offset corresponding to the arrival time of that multipath. The pilot interference from each interference multipath may be estimated based on the spreading sequence for the interfering multipath and the despreading sequence for the desired multipath. The total pilot interference from a number of interfering multipaths may be subtracted from the data component in the desired multipath to provide pilot-canceled data having improved performance.
摘要翻译：用于在无线（例如CDMA）通信系统中消除导频干扰的技术。接收到的信号通常包括多个信号实例（即，多路径）。对于希望被处理的每个多路径，其他多路径用作所需多路径上的干扰。如果基于已知数据模式（例如，全零）并且用已知的信道化码（例如，沃尔什码为零）来覆盖导频，则干扰多径中的导频可以被估计为在对应于该多径的到达时间的时间偏移。来自每个干扰多路径的导频干扰可以基于干扰多路径的扩展序列和所需多径的解扩序列来估计。来自多个干扰多径的总导频干扰可以从期望的多路径中的数据分量中减去，以提供具有改进性能的导频取消数据。

97. 发明申请

WO2002087102A2 REDUCTION OF LINEAR INTERFERENCE CANCELING SCHEME 审中-公开
标题翻译：减少线性干扰消除方案
公开(公告)号：WO2002087102A2
公开(公告)日：2002-10-31
申请号：PCT/SE2002/000778
申请日：2002-04-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： MURRILLO BARRERA, Alex , SPARRMAN, Erik , PARKVALL, Stefan
IPC分类号： H04B1/707
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。

98. 发明申请

WO02054614A2 SYSTEM, METHOD AND APPARATUS FOR WIRELESS CHANNEL PARAMETER ESTIMATION IN SPREAD SPECTRUM COMMUNICATION SYSTEMS 审中-公开
标题翻译：传播频谱通信系统中无线信道参数估计的系统，方法与装置
公开(公告)号：WO02054614A2
公开(公告)日：2002-07-11
申请号：PCT/IB0102640
申请日：2001-12-21
申请人： ERICSSON INC
发明人： MADKOUR MOHAMED F , WANG YI-PIN ERIC
IPC分类号： H04B1/7107 , H04Q7/38 , H04B1/707
CPC分类号： H04B1/7107 , H04B1/71072 , H04B2201/70701
摘要： The present invention provides a system, method and apparatus for estimating channel parameters in spread spectrum communication systems. A first method is accomplished by receiving a base atation signal and then demodulating the base station signal. After demodulating the base station signal, a maximum signal is selected from the base station signal. If the maximum signal is the common pilot channel, then the channel parameters are estimated directly from the common pilot channel. If the maximum signal is not the common pilot channel, then the demodulated base station signal is iteratively fed back for further demodulation and re-selection of the maximum signal until the maximum signal is the common pilot channel. A second method is accomplished by incorporing channel estimates made from the interfering signals in a constructive manner to the first method.
摘要翻译：本发明提供一种用于估计扩频通信系统中的信道参数的系统，方法和装置。第一种方法是通过接收基站信号，然后解调基站信号来实现的。解调基站信号后，从基站信号中选择最大信号。如果最大信号是公共导频信道，则直接从公共导频信道估计信道参数。如果最大信号不是公共导频信道，则解调的基站信号被迭代地反馈以进一步解调和重新选择最大信号，直到最大信号是公共导频信道。第二种方法是通过将以干扰信号作出的信道估计以建设性方式结合到第一种方法来实现的。

99. 发明申请

WO02043266A2 MULTIPATH INTERFERENCE REDUCTION FOR A CDMA SYSTEM 审中-公开
标题翻译： CDMA系统的多径干扰减少
公开(公告)号：WO02043266A2
公开(公告)日：2002-05-30
申请号：PCT/US2001/032335
申请日：2001-10-16
IPC分类号： H04B1/7107 , H04B1/7117 , H04B1/707
CPC分类号： H04B1/7107 , H04B1/7117
摘要： A method and system reduce multipath signal interference in a CDMA receiver. The CDMA receiver comprising parallel first and second RAKE receivers receives a multipath signal. The first RAKE receiver includes a number of individual RAKE fingers, each operating with a defined finger delay matched to a propagation path delay. The output signal from each RAKE finger includes multipath interference. The second RAKE receiver includes a group of RAKE fingers corresponding to each RAKE finger in the first RAKE receiver. Each group of RAKE fingers is configured to produce an estimate of the multipath interference in the output signal generated by the corresponding RAKE finger in the first RAKE receiver. The estimated multipath interference signals are scaled, and then subtracted from the RAKE finger outputs from the first RAKE receiver to reduce multipath interference. Scaling coefficients are adjusted to ensure that such subtraction effectively reduces multipath interference.
摘要翻译：一种方法和系统降低CDMA接收机中的多径信号干扰。包括并行的第一和第二RAKE接收机的CDMA接收机接收多径信号。第一RAKE接收机包括多个单独的RAKE手指，每个手指均以与传播路径延迟匹配的限定的手指延迟来操作。来自每个RAKE手指的输出信号包括多路径干扰。第二RAKE接收机包括与第一RAKE接收机中的每个RAKE拨号相对应的一组RAKE指针。每组RAKE指状物被配置为产生由第一RAKE接收器中的相应RAKE指状件产生的输出信号中的多路径干扰的估计。估计的多路径干扰信号被缩放，然后从RAKE第一RAKE接收机的RAKE拨号输出中减去减少多径干扰。调整缩放系数以确保这种减法有效地减少了多路径干扰。

100. 发明申请

WO02011304A2 METHOD AND APPARATUS FOR MULTIPATH PARAMETER ESTIMATION IN SPREAD-SPECTRUM COMMUNICATIONS SYSTEMS 审中-公开
标题翻译：扩频通信系统中多路径参数估计的方法与装置
公开(公告)号：WO02011304A2
公开(公告)日：2002-02-07
申请号：PCT/US2001/023726
申请日：2001-07-27
IPC分类号： H04B1/7107 , H04B1/7113 , H04B1/7115 , H04B1/7117 , H04B1/7183 , H04B1/00
CPC分类号： H04B1/7115 , H04B1/7107 , H04B1/7113 , H04B1/7117 , H04B1/7183
摘要： A training method provides and advantageous technique for estimating secondary propagation path parameters based on learming propagation path characteristics for a selected number of secondary propagation path signals. In a multipath environment, a received radio signal comprises multiple received signals, each received through a different signal propagation path. The strongest multipath signal is deemed the main path signal, while the remaining multipath signals are termed secondary path signals. In some types of direct-sequence, spread spectrum communications systems, significant secondary signals must be canceled from the received multipath signal to achieve desired receiver performance, while in other types of systems, such secondary signals may be used to enhance the signal-to-noise ratio of the received signal. In either case, the various multipath signals must be accurately characterized. The training method includes a course search technique that yields initial identification of the significant secondary path signals, and further includes techniques for characterizing the magnitude, phase, and path delay, all relative to the main path signal for secondary path signal of interest. The training method employs differential decoding and sample phase slicing to improve parameter estimation accuracy, and further includes phase correlation operations to determine secondary path delay, where such delays may have spreads that exceed a transmitted signal symbol period.
摘要翻译：训练方法提供了一种基于用于所选次数传播路径信号的二次传播路径特性来估计二次传播路径参数的有利技术。在多径环境中，接收的无线电信号包括多个接收信号，每个接收信号通过不同的信号传播路径接收。最强的多路径信号被认为是主路径信号，而剩余的多路径信号被称为次路径信号。在一些类型的直接序列扩频通信系统中，必须从接收的多路径信号中消除重要的二次信号以实现期望的接收机性能，而在其它类型的系统中，这样的辅助信号可用于增强信号 - 接收信号的噪声比。在任一种情况下，必须准确地表征各种多径信号。训练方法包括产生重要二次路径信号的初始识别的课程搜索技术，并且还包括用于表征幅度，相位和路径延迟的技术，全部相对于感兴趣的辅助路径信号的主路径信号。训练方法采用差分解码和采样相位切片来提高参数估计精度，并且还包括相位相关运算以确定次级路径延迟，其中这样的延迟可能具有超过发射信号符号周期的扩展。

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