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公开(公告)号：US20070165576A1
公开(公告)日：2007-07-19
申请号：US11275388
申请日：2005-12-29
IPC分类号： H04B7/216
CPC分类号： H04B7/0691 , H04B7/0413 , H04J13/0003
摘要： A control channel for MIMO users operating in conjunction with an HS-DSCH system shares channelization codes with an HS-SCCH control channel. MIMO control channel information can be signaled from a transmit antenna selected based on information produced by the intended recipient. The modulation format used by a MIMO control channel can be selected based on the number of antenna streams in the corresponding MIMO data transmission.
摘要翻译： 与HS-DSCH系统结合操作的MIMO用户的控制信道与HS-SCCH控制信道共享信道化码。 MIMO控制信道信息可以从根据预期接收者产生的信息选择的发射天线发出信号。 可以基于在相应的MIMO数据传输中的天线流的数量来选择由MIMO控制信道使用的调制格式。
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62.发明授权公开(公告)号：US06975672B2
公开(公告)日：2005-12-13
申请号：US09756504
申请日：2001-01-08
CPC分类号： H04L25/03305 , H04B2201/709727 , H04L25/03299
摘要： A communications signal representing symbols encoded according to respective portions of a spreading sequence is decoded. Time-offset correlations of the communications signal with the spreading sequence are generated. The time-offset correlations are combined to generate first estimates for the symbols. Intersymbol interference factors that include a relationship among different portions of the spreading sequence are determined, and a second estimate for one of the symbols is generated from the first estimates based on the determined intersymbol interference factors. An intersymbol interference factor may include a relationship between a first portion of the spreading sequence associated with the one symbol to a second portion of the spreading sequence associated with another symbol and may be determined, for example, from the spreading sequence and a channel estimate for a channel over which the communications signal is communicated. The invention may be embodied as methods and apparatus, for example, as a receiver included in a communications apparatus, such as a wireless terminal, wireless base station, or other wireless, wireline or optical communications apparatus.
摘要翻译： 表示根据扩展序列的各个部分编码的符号的通信信号被解码。 产生通信信号与扩展序列的时间偏移相关。 时间偏移相关被组合以产生符号的第一估计。 确定包括扩展序列的不同部分之间的关系的符号间干扰因子，并且基于确定的符号间干扰因子从第一估计生成符号之一的第二估计。 符号间干扰因子可以包括与一个符号相关联的扩展序列的第一部分与与另一符号相关联的扩展序列的第二部分之间的关系，并且可以例如从扩展序列和用于 通信信号通过该信道。 本发明可以被实现为例如作为诸如无线终端，无线基站或其他无线，有线或光通信设备的通信设备中包括的接收机的方法和装置。
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公开(公告)号：US06801565B1
公开(公告)日：2004-10-05
申请号：US09344898
申请日：1999-06-25
IPC分类号： H04B1707
CPC分类号： H04B1/712 , H04B1/709 , H04B1/7117
摘要： Information encoded in a spread spectrum signal transmitted in a communications medium is recovered. A composite signal including a spread spectrum signal is received from the communications medium, and correlated with a spreading sequence to generate time-offset correlations. Respective first and second groups of the correlations are combined, e.g., according to estimated channel coefficients, to produce respective first and second combined values. The first and second combined values are then combined in a manner that compensates for correlated impairment in the composite signal to generate an estimate information in the transmitted spread spectrum signal, e.g., using weighting factors generated from an estimated composite channel response and an estimated impairment correlation, or adaptively generated weighting factors. Related apparatus are also described.
摘要翻译： 在通信介质中发送的扩频信号中编码的信息被恢复。 从通信介质接收包括扩展频谱信号的复合信号，并与扩展序列相关以产生时间偏移相关。 各个相关的第一和第二组例如根据估计的信道系数被组合，以产生相应的第一和第二组合值。 然后，以补偿复合信号中的相关损害的方式组合第一和第二组合值，以在发射的扩频信号中产生估计信息，例如，使用从估计的复合信道响应和估计的损耗相关性产生的加权因子 ，或自适应产生的加权因子。 还描述了相关装置。
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公开(公告)号：US06728203B2
公开(公告)日：2004-04-27
申请号：US09859535
申请日：2001-05-18
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04J1100
CPC分类号： H04B1/7075 , H04B1/7087 , H04B7/0845 , H04B2201/70702 , H04L2027/0065
摘要： A system searches for a cell and determines a frequency error estimate in a communications network. The system generates a slot boundary candidate. The system identifies a scrambling code group using the slot boundary list, identifies a scrambling code from the scrambling code group, and determines a frequency error estimate using the identified scrambling code. The system also determines a detection metric, compares the detection metric to a predetermined threshold, and selects the frequency error estimate when the detection metric is greater than the predetermined threshold.
摘要翻译： 系统搜索小区并确定通信网络中的频率误差估计。 系统生成槽边界候选。 该系统使用时隙边界列表识别扰码组，从加密码组识别扰码，并使用所识别的扰码确定频率误差估计。 系统还确定检测度量，将检测度量与预定阈值进行比较，并且当检测度量大于预定阈值时选择频率误差估计。
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65.发明授权Synchronization and cell search methods and apparatus for wireless communications 有权用于无线通信的同步和小区搜索方法和装置公开(公告)号：US06480558B1
公开(公告)日：2002-11-12
申请号：US09271074
申请日：1999-03-17
申请人： Tony Ottosson , Yi-Pin Eric Wang
发明人： Tony Ottosson , Yi-Pin Eric Wang
IPC分类号： H04B110
CPC分类号： H04B1/7083 , H04B1/7107 , H04B2201/70702
摘要： A received communications signal is correlated with a common synchronization code to produce a synchronization detection signal. A component of the synchronization detection signal associated with a known synchronization signal is canceled from the synchronization detection signal to produce an interference-canceled synchronization detection signal. Timing of a synchronization signal is determined from the interference-canceled synchronization detection signal. According to one aspect, interference cancellation is achieved by generating a correlation of an estimated received known synchronization signal with the common synchronization code, canceling the correlation of the estimated received known synchronization signal with the common synchronization code from the synchronization detection signal to produce the interference-canceled synchronization detection signal. Timing of a synchronization signal may then be determined by accumulating the interference-canceled synchronization detection signal over a time interval, detecting a peak in the accumulated interference-canceled synchronization detection signal, and determining timing of a synchronization signal from the detected peak. According to another aspect, interference cancellation is achieved by accumulating the synchronization detection signal over a time interval, identifying a peak in the accumulated synchronization detection signal not associated with a known synchronization signal, and determining timing of a synchronization signal from the identified peak. Related terminal apparatus are also discussed.
摘要翻译： 接收到的通信信号与公共同步码相关，以产生同步检测信号。 与已知的同步信号相关联的同步检测信号的分量从同步检测信号中消除，以产生干扰消除的同步检测信号。 从干扰消除的同步检测信号确定同步信号的定时。 根据一个方面，通过产生估计的接收到的已知同步信号与公共同步码的相关性来消除干扰消除，从所述同步检测信号中消除估计接收的已知同步信号与公共同步码的相关性，以产生干扰 同步检测信号。 然后可以通过在一段时间间隔内累积干扰消除的同步检测信号来确定同步信号的定时，检测累积的干扰消除同步检测信号中的峰值，以及根据检测到的峰值确定同步信号的定时。 根据另一方面，通过在时间间隔内累积同步检测信号，识别与已知同步信号不相关的累积同步检测信号中的峰值，以及根据所识别的峰值确定同步信号的定时来实现干扰消除。 还讨论了相关终端装置。
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公开(公告)号：US06480504B1
公开(公告)日：2002-11-12
申请号：US09144272
申请日：1998-08-31
申请人： Yi-Pin Eric Wang , Torgny Palenius , Paul Dent
发明人： Yi-Pin Eric Wang , Torgny Palenius , Paul Dent
IPC分类号： H04J1300
CPC分类号： H04W68/00 , H04W48/12 , H04W52/0216 , H04W52/0219 , H04W52/0245 , Y02D70/1222
摘要： Methods and systems for optimizing standby mode power performance in radiocommunication systems are described. Techniques are providing which permit a mobile station to read synchronization symbols, e.g., long code masked symbols, in transmitted in differently numbered timeslots while minimizing wake-up time in idle mode.
摘要翻译： 描述了在无线电通信系统中优化待机模式功率性能的方法和系统。 提供了允许移动台读取在不同编号的时隙中发送的同步符号（例如长码屏蔽符号）同时最小化空闲模式下的唤醒时间的技术。
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67.发明授权Method and apparatus for signal quality loss compensation in multiplexing transmission systems 有权复用传输系统信号质量损失补偿的方法和装置公开(公告)号：US09130706B2
公开(公告)日：2015-09-08
申请号：US11138724
申请日：2005-05-26
CPC分类号： H04L1/0026 , H04B7/061 , H04B7/0678 , H04B7/0691 , H04B7/0697 , H04B17/309 , H04L1/0003 , H04L1/0009 , H04L1/0033 , H04L1/06 , H04L1/20 , H04L5/0057 , H04W24/10
摘要： A wireless communication receiver receiving a multiplexed signal comprising two or more signal streams calculates a received signal quality for the multiplexed signal as a function of stream-specific received signal qualities, determines one or more loss parameters indicative of variations in the stream-specific received signal qualities, and generates quality feedback based on such information. In turn, a transmitter controls the selection of one or more transmission parameters of the multiplexed signal based on the quality feedback, such that its transmit link adaptations account for the losses in received signal quality at the receiver arising from the variations in the stream-specific received signal qualities. The quality feedback may include calculated loss values, or parameter/penalties that permit loss calculation, and the method applies to both code multiplexing and spatial multiplexing.
摘要翻译： 接收包括两个或多个信号流的多路复用信号的无线通信接收机根据流专用接收信号质量计算多路复用信号的接收信号质量，确定一个或多个指示流特定接收信号变化的丢失参数 质量，并根据这些信息产生质量反馈。 反过来，发射机基于质量反馈来控制对多路复用信号的一个或多个传输参数的选择，使得其发射链路适应性考虑到接收机的接收信号质量中由于流特定的变化引起的损耗 收到信号质量。 质量反馈可以包括计算的损失值或允许损耗计算的参数/惩罚，并且该方法适用于码复用和空间复用两者。
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公开(公告)号：US09124458B2
公开(公告)日：2015-09-01
申请号：US12568036
申请日：2009-09-28
CPC分类号： H04L25/03178 , H04L25/03203 , H04L25/03331 , H04L2025/03426
摘要： Teachings presented herein offer reduced computational complexity for detecting a plurality of symbol blocks, even for symbol blocks that comprise the combination of a relatively large number of symbols. The teachings perform two or more stages of detection assistance to successively reduce the number of candidate combinations of symbols to be considered for a symbol block when detecting the plurality of symbol blocks. In particular, the teachings identify a reduced set of candidate symbol combinations for at least one symbol block in the plurality of symbol blocks, and then jointly detect each of one or more distinct groups of symbols in the symbol block to determine from that reduced set a final reduced set of candidate symbol combinations. Detection of the plurality of symbol blocks limits the candidate combinations of symbols considered for a symbol block to the final reduced set of candidate symbol combinations identified for that symbol block.
摘要翻译： 本文中提供的教学提供了用于检测多个符号块的减少的计算复杂度，即使对于包括相对大量符号的组合的符号块也是如此。 该教导执行检测辅助的两个或多个阶段，以便在检测到多个符号块时，连续地减少要用于符号块的符号候选组合的数量。 具体地，教导识别多个符号块中的至少一个符号块的候选符号组合的缩减集合，然后共同检测符号块中的一个或多个不同符号组中的每个，以从该缩减集合a 候选符号组合的最终缩减集合。 多个符号块的检测将针对符号块考虑的符号的候选组合限制为为该符号块识别的候选符号组合的最终缩减集合。
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69.发明授权Efficient frequency domain (FD) MMSE equalization weight updates in a multi-stage parallel interference cancellation receiver 有权在多级并行干扰消除接收机中的有效频域（FD）MMSE均衡权重更新公开(公告)号：US09042428B2
公开(公告)日：2015-05-26
申请号：US13463974
申请日：2012-05-04
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04B1/00 , H04B1/7105 , H04B1/7107 , H04J11/00 , H04B7/04 , H04B7/08
CPC分类号： H04B1/71055 , H04B1/71072 , H04B1/71075 , H04B7/0413 , H04B7/0854 , H04J11/004
摘要： A system and method to more efficiently compute updated Frequency Domain (FD) Minimum Mean Squared Error (MMSE) equalization weights in a multi-stage Parallel Interference Cancellation (PIC) receiver after initial interference cancellation. The updated equalization weights (which are to be used during re-equalization) can be obtained using the old equalization weights already computed for initial interference cancellation. There is no need to invert an nR by nR matrix (where nR is the number of receive antennas) at each stage of the PIC receiver during each iteration of equalization and decoding operations. Rather, the matrix to be inverted to obtain updated equalization weights may be of the dimension n×n (where “n” equals the total number of transmission layers in a transmission scheme used in the wireless network). This significantly reduces complexity of determining updated equalization weights during FD MMSE equalization, thereby saving computational resources in a digital receiver performing such equalization.
摘要翻译： 在初始干扰消除之后，在多级并行干扰消除（PIC）接收机中更有效地计算更新的频域（FD）最小均方误差（MMSE）均衡权重的系统和方法。 可以使用已经为初始干扰消除计算的旧的均衡权重来获得更新的均衡权重（将在重新均衡期间使用）。 在均衡和解码操作的每次迭代期间，不需要在PIC接收器的每个阶段通过nR矩阵（其中nR是接收天线的数量）来反转nR。 相反，要反转以获得更新的均衡权重的矩阵可以是尺寸n×n（其中“n”等于在无线网络中使用的传输方案中的传输层的总数）。 这显着降低了在FD MMSE均衡期间确定更新的均衡权重的复杂性，从而在执行这种均衡的数字接收机中节省了计算资源。
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70.发明授权Signaling of other-cell signal's configuration information to facilitate interference cancellation at a mobile terminal 有权信令其他小区信号的配置信息，以便于移动终端的干扰消除公开(公告)号：US08958753B2
公开(公告)日：2015-02-17
申请号：US13451076
申请日：2012-04-19
申请人： Yi-Pin Eric Wang , Andres Reial , Edgar Ramos , Stefan Parkvall , Stephen Grant
发明人： Yi-Pin Eric Wang , Andres Reial , Edgar Ramos , Stefan Parkvall , Stephen Grant
IPC分类号： H04B1/00 , H04W72/00 , G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04W4/00 , H03D3/24 , H04W72/12 , H04W72/08
CPC分类号： H04W72/1278 , H04B1/71075 , H04B1/712 , H04W72/082
摘要： In MU-MIMO scenarios, a target mobile terminal can be exposed to data streams intended for other mobile terminals. If the target mobile terminal is capable of interference cancellation, then a serving base station can provide the target mobile terminal with interference information so that the target mobile terminal can efficiently cancel interferences due to these interfering data streams. The interference information includes one or more configuration information, each of which characterizes a related interfering data stream. The serving base station provides the interference information over one or more radio resources that are exclusive allocated to the target mobile terminal or are allocated for common listening. The serving base station exchanges configuration information with neighboring base stations over inter-BS links. The inter-BS links use resources that are different from the radio resources used between the base stations and the mobile terminals.
摘要翻译： 在MU-MIMO场景中，目标移动终端可以暴露给旨在用于其他移动终端的数据流。 如果目标移动终端能够进行干扰消除，则服务基站可以向目标移动终端提供干扰信息，使得目标移动终端可以有效地消除由于这些干扰数据流引起的干扰。 干扰信息包括一个或多个配置信息，每个配置信息表征相关的干扰数据流。 服务基站通过专用于目标移动终端的一个或多个无线电资源提供干扰信息，或者被分配用于共同收听。 服务基站通过BS间链路与相邻基站交换配置信息。 BS间链路使用与基站和移动终端之间使用的无线电资源不同的资源。
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