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51. 发明授权

US08743987B2 Symbol detection for alleviating inter-symbol interference 失效
标题翻译：用于缓解符号间干扰的符号检测
公开(公告)号：US08743987B2
公开(公告)日：2014-06-03
申请号：US13050210
申请日：2011-03-17
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04L27/06 , H04L27/01 , H04B1/10
CPC分类号： H04L25/08 , H04L25/03012 , H04L25/03159 , H04L25/03171 , H04L25/03184 , H04L25/03312 , H04L25/03331 , H04L2025/03414 , H04L2025/03426
摘要： A receiver is configured to perform symbol detection based on a total frequency domain received signal that comprises contribution from a block of time domain symbols. The receiver comprises electronic circuitry operate to divide the block into plural sub-blocks, and for each sub-block, to jointly detect the symbols of the sub-block while treating symbols of the block which are outside of the sub-block as noise.
摘要翻译：接收机被配置为基于包括来自时域符号块的贡献的总频域接收信号执行符号检测。接收机包括电子电路，用于将块划分为多个子块，并且对于每个子块，共同检测子块的符号，同时将处于子块外部的块的符号作为噪声进行处理。

52. 发明申请

US20140029650A1 Adaptive Precoder Cycling 有权
标题翻译：自适应预编码器循环
公开(公告)号：US20140029650A1
公开(公告)日：2014-01-30
申请号：US13557306
申请日：2012-07-25
申请人： Chester Sungchung Park , Yi-Pin Eric Wang
发明人： Chester Sungchung Park , Yi-Pin Eric Wang
IPC分类号： H04L29/02 , H04B1/38
CPC分类号： H04B7/0456 , H04B7/0604
摘要： Methods and apparatus are disclosed for improving a precoder selection process in a wireless communications system. In a normal precoder selection process, a precoder is selected from a codebook based on channel state information estimated from received reference signals. In between two received reference signals, a subset of precoders is cycled through and each precoder in the subset is iteratively selected for use by a transmitter to precode transmit signals. The subset of precoders may be adaptively modified based on predefined criteria.
摘要翻译：公开了用于改进无线通信系统中的预编码器选择过程的方法和装置。在通常的预编码器选择处理中，基于从接收到的参考信号估计的信道状态信息，从码本中选择预编码器。在两个接收到的参考信号之间，预编码器的子集被循环遍历并且子集中的每个预编码器被迭代地选择以供发射机用于对发射信号进行预编码。预编码器的子集可以基于预定标准自适应地修改。

53. 发明申请

US20130301686A1 Chip-Level Processing for Joint Demodulation in CDMA Receivers 有权
标题翻译： CDMA接收机联合解调的芯片级处理
公开(公告)号：US20130301686A1
公开(公告)日：2013-11-14
申请号：US13468680
申请日：2012-05-10
申请人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
发明人： Andres Reial , Stephen Grant , Michael Samuel Bebawy , Yi-Pin Eric Wang
IPC分类号： H04B1/7105
CPC分类号： H04B1/7105 , H04B1/7097 , H04B1/71052 , H04B1/71057 , H04L25/03331
摘要： A CDMA multi-code joint demodulation solution in which impairment suppression and channel matching operations are performed prior to despreading. Embodiments include a linear front end that performs chip-level suppression of signal components that are not included in a subsequent joint demodulation process. The pre-processing stage also carries out metric preparation and provides a vector decision statistic that is processed by a joint demodulation stage to extract per-code soft values for the symbols of interest in the received signal. Both code-specific and code-averaged versions of the linear processing are disclosed, as are several front-end configurations with equivalent performance, but different complexity trade-offs. These new approaches use a block formulation, requiring a set of input chip samples as an input, and perform all operations as matrix-vector multiplications, which is an approach amenable to efficient DSP or hardware implementation.
摘要翻译：一种CDMA解码解码方案，其中在解扩之前执行损伤抑制和信道匹配操作。实施例包括执行不包括在随后的联合解调处理中的信号分量的芯片级抑制的线性前端。预处理阶段还执行度量准备，并提供由联合解调级处理以提取接收信号中感兴趣符号的每码软值的向量决策统计量。公开了线性处理的代码特定和代码平均版本，以及具有相同性能但是不同复杂性权衡的若干前端配置。这些新方法使用块公式，需要一组输入芯片样本作为输入，并执行所有操作作为矩阵向量乘法，这是一种适合高效DSP或硬件实现的方法。

54. 发明申请

US20130279559A1 Method and Apparatus for Soft Symbol Processing in a Communication Receiver 有权
标题翻译：通信接收机中软符号处理的方法和装置
公开(公告)号：US20130279559A1
公开(公告)日：2013-10-24
申请号：US13454919
申请日：2012-04-24
申请人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
发明人： Michael Samuel Bebawy , Fredrik Huss , Yi-Pin Eric Wang
IPC分类号： H04B1/10 , H04L27/01 , H04L27/00
CPC分类号： H04L25/03012 , H04L1/005 , H04L25/03171 , H04L25/0328 , H04L27/38
摘要： In one aspect, the present invention improves Turbo equalization and/or soft interference cancellation processing in communication receivers by providing an efficient and accurate technique to compute the second moment of a received symbol, e.g., an interfering symbol, as a function of the expected bit values of only those bits in the symbol that are magnitude-controlling bits according to a defined modulation constellation. Advantageously, the expected bit values in at least one embodiment are computed using a LUT that maps bit LLRs to corresponding hyperbolic tangent function values. Further, the expected symbol value is computed as a linear function of terms comprising the expected bit values and the soft symbol variance is efficiently computed from the second moment and the expected symbol value squared. This simplified processing reduces receiver complexity, particularly in the context of modulation constellations having non-constant magnitudes, and thus saves power and/or improves design economics.
摘要翻译：在一个方面，本发明通过提供有效和准确的技术来计算接收符号的第二时刻（例如干扰符号）来改善通信接收机中的Turbo均衡和/或软干扰消除处理，作为预期位的函数根据定义的调制星座，只有符号中那些位是幅度控制位的值。有利地，使用将位LLR映射到对应的双曲正切函数值的LUT来计算至少一个实施例中的预期位值。此外，预期符号值被计算为包括预期位值的项的线性函数，并且从第二时刻有效地计算软符号方差，并且预期符号值平方。这种简化的处理降低了接收机的复杂度，特别是在具有非恒定幅度的调制星座的上下文中，从而节省功率和/或提高了设计经济性。

55. 发明申请

US20130237212A1 PRECODING WITH PARTIALLY STALE FEEDBACK 有权
标题翻译：预定部分反应
公开(公告)号：US20130237212A1
公开(公告)日：2013-09-12
申请号：US13414932
申请日：2012-03-08
申请人： Ali S. Khayrallah , Yi-Pin Eric Wang
发明人： Ali S. Khayrallah , Yi-Pin Eric Wang
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04B7/0626 , H04B7/022 , H04B7/0434 , H04B7/0452 , H04B7/0663 , H04B17/373 , H04L1/0019 , H04L25/03898 , H04L25/03949
摘要： A system and method in which a base station treats the Channel State Information (CSI) from wireless terminals as only partially-stale, and exploits this partially-stale CSI to predict the current channel from old estimates of the channel. The predicted channel is then used to design a precoder. The base station shapes the transmitted signal with the precoder so as to match it as closely as possible to the current channel. Particular embodiments thus combine the benefits of the stale feedback scheme with precoding to match the channel. Consequently, the signal received at a terminal is better conditioned, thereby providing a greater overall boost in performance of the communication arrangement between the base station and the terminal. The usage of partially-stale CSI can be important for dense networks with a large number of simple terminals.
摘要翻译：一种基站将无线终端的信道状态信息（CSI）仅处于部分状态的系统和方法，并利用该部分陈旧的CSI来预测来自信道的旧估计的当前信道。然后预测的通道用于设计预编码器。基站用预编码器对发射信号进行整形，使其尽可能接近当前信道。因此，特定的实施例将陈旧反馈方案的优点与预编码相结合以匹配信道。因此，在终端处接收的信号被更好地调节，从而对基站和终端之间的通信装置的性能提供更大的整体提升。部分陈旧的CSI的使用对于具有大量简单终端的密集网络来说可能是重要的。

56. 发明授权

US08467439B2 Adaptively switching equalization operations in a node of a wireless network 有权
标题翻译：适应性地切换无线网络节点中的均衡操作
公开(公告)号：US08467439B2
公开(公告)日：2013-06-18
申请号：US13117583
申请日：2011-05-27
申请人： Yi-Pin Eric Wang , Tore Mikael André , Jinliang Huang
发明人： Yi-Pin Eric Wang , Tore Mikael André , Jinliang Huang
IPC分类号： H03K5/159
CPC分类号： H04L25/03171 , H04L25/03012 , H04L2025/03726
摘要： At a node of a wireless network, equalization operations performed on signals received from a transmitter are adaptively switched to be equalized by an iterative turbo receiver or a linear receiver. A theoretical expression of a post-equalization SINR of a capacity-achieving receiver is used to estimate the post-equalization SINR performance of the turbo receiver. The estimated post-equalization SINR performance is then used as a basis to determine whether the received signal is to be equalized by the turbo receiver or the linear receiver.
摘要翻译：在无线网络的节点处，对从发射机接收的信号执行的均衡操作被自适应地切换以由迭代turbo接收机或线性接收机进行均衡。使用容量实现接收机的后均衡SINR的理论表达式来估计turbo接收机的均衡后SINR性能。然后，将估计的均衡后SINR性能用作基础，以确定接收到的信号是否被turbo接收机或线性接收机均衡。

57. 发明授权

US08451785B2 Control signal aggregation in a multi-carrier WCDMA system 有权
公开(公告)号：US08451785B2
公开(公告)日：2013-05-28
申请号：US12614526
申请日：2009-11-09
申请人： Stephen Grant , Anders Wallén , Yi-Pin Eric Wang
发明人： Stephen Grant , Anders Wallén , Yi-Pin Eric Wang
IPC分类号： H04W4/00 , H04B7/216
CPC分类号： H04W72/0406 , H04B1/707 , H04L1/001 , H04L1/0027 , H04L1/0029 , H04L5/001 , H04L5/0016 , H04L5/0053 , H04L5/0055 , H04L5/06
摘要： Methods and apparatus are disclosed for transmitting data to a remote node via each of two or more transmitted carrier signals, wherein a distinct outbound packet data traffic channel is mapped to each transmitted carrier signal. In an exemplary method, aggregated control channel data is formed by combining control channel data corresponding to each of two or more received carrier signals, simultaneously transmitting traffic channel data to the remote node on each of the two or more outbound packet data traffic channels, and transmitting the aggregated control channel data using one or more physical control channels mapped to a first one of the transmitted carrier signals. In particular, these methods and apparatus may be applied to a multi-carrier High-Speed Packet Access (HSPA) system.

58. 发明申请

US20120155435A1 MANAGEMENT OF UPLINK RESOURCES IN MULTI-CARRIER CDMA SYSTEM 有权
标题翻译：多载波CDMA系统中的上行资源管理
公开(公告)号：US20120155435A1
公开(公告)日：2012-06-21
申请号：US13403683
申请日：2012-02-23
申请人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
发明人： Yi-Pin Eric Wang , Anders Wallén , Stephen Grant
IPC分类号： H04W72/04 , H04J3/02 , H04B7/216
CPC分类号： H04W72/0486 , H04W72/0453
摘要： The method an apparatus described herein manages uplink resources to increase spectral efficiency and system capacity. According to one embodiment of the present invention, a base station may be assigned two or more downlink carriers for downlink transmission and two or more corresponding uplink carriers. In a multi-carrier mode, the base station may transmit signals on two or more downlink carriers to the same mobile terminal, and receive signals from the mobile terminal on one of the paired uplink terminals. The uplink carriers can be operated at different interference levels and the uplink traffic can be divided between the available uplink carriers based on the type of traffic and/or data transmission parameters. The mobile terminals may also be allowed to switch between the uplink carriers to improve overall efficiency.
摘要翻译：本文描述的方法和装置管理上行链路资源以提高频谱效率和系统容量。根据本发明的一个实施例，可以为基站分配用于下行链路传输的两个或更多个下行链路载波和两个或更多个对应的上行链路载波。在多载波模式中，基站可以在两个或多个下行链路载波上发送信号到同一个移动终端，并且在一个上行链路终端中的一个上接收来自移动终端的信号。上行链路载波可以以不同的干扰级别操作，并且可以基于业务类型和/或数据传输参数在可用的上行链路载波之间划分上行链路业务。还可以允许移动终端在上行链路载波之间切换以提高整体效率。

59. 发明申请

US20120099638A1 Soft Cancellation Of Inter-Layer Interference Within A MIMO Codeword 有权
标题翻译： MIMO码字间的层间干扰的软消除
公开(公告)号：US20120099638A1
公开(公告)日：2012-04-26
申请号：US13091062
申请日：2011-04-20
申请人： Yi-Pin Eric Wang
发明人： Yi-Pin Eric Wang
IPC分类号： H04L27/01
CPC分类号： H04L25/03057 , H04B7/0413 , H04L1/005 , H04L1/0066 , H04L1/208 , H04L25/067 , H04L2025/03363 , H04L2025/03426
摘要： A receiver for processing a received signal encoded with a codeword and mapped to two layers includes a plurality of equalizers for equalizing the received signal, a plurality of demodulators for demodulating a respective equalized signal, a decoder for decoding the demodulated signal by extracting soft bits from the demodulated signal, a modulator for modulating the decoded signal by generating soft symbols based on the extracted soft bits, a demapper for demapping the modulated signal to soft symbols corresponding to each of the two layers and a plurality of inter-layer interference cancellers for cancelling interference utilizing the demapped soft symbols wherein the demapped soft symbols are utilized also by the equalizers to reduce inter-symbol interference.
摘要翻译：用于处理用码字编码并映射到两层的接收信号的接收机包括用于均衡接收信号的多个均衡器，用于解调相应的均衡信号的多个解调器，用于通过提取软比特来解码解调信号的解码器解调信号，用于通过基于提取的软比特生成软符号来调制解码信号的调制器，用于将调制信号解映射到对应于两个层中的每一个的软符号的解映射器和用于消除的多个层间干扰消除器利用解映射的软符号的干扰，其中平滑器还利用去映射的软符号来减少符号间干扰。

60. 发明申请

US20120014307A1 Generation of MBSFN-DOB Synchronization Codes 有权
标题翻译：生成MBSFN-DOB同步码
公开(公告)号：US20120014307A1
公开(公告)日：2012-01-19
申请号：US12808784
申请日：2008-09-18
申请人： Lars Lindbom , Dirk Gerstenberger , Yi-Pin Eric Wang
发明人： Lars Lindbom , Dirk Gerstenberger , Yi-Pin Eric Wang
IPC分类号： H04W4/06
CPC分类号： H04B1/7083 , H04B2201/70701 , H04J13/0014 , H04J13/102
摘要： Physical downlink channels PPHY1, PHY2 are summed in a summation unit 10. The output of summation unit 10 is forwarded to another summation unit 12, where it is combined with the primary and secondary synchronization channels P-SCH, S-SCH. The secondary synchronization channel S-SCH is formed as in WCDMA. The primary synchronization channel P-SCH is formed by connecting a switch SW either to a code generator 14 generating the conventional code PSCWCDMA or a code generator 18 generating the code PSCNEW. The selection is controlled by a PSC controller 18. This controller can be adapted to produce a P-SCH in accordance with one of several formats. PSCNEW has the properties that it is a hierarchical Golay sequence constructed by a plurality of constituent sequences with at least one of the constituent sequences being the Golay sequence, and that it is orthogonal to the primary and secondary synchronization codes used in non-MBSFN capable WCDMA.
摘要翻译：物理下行链路信道PPHY1，PHY2在求和单元10中相加。求和单元10的输出被转发到另一个求和单元12，其中它与主和辅同步信道P-SCH，S-SCH组合。次同步信道S-SCH如WCDMA中那样形成。主同步信道P-SCH是通过将开关SW连接到产生常规码PSCWCDMA的码发生器14或产生码PSCNEW的码发生器18来形成的。该选择由PSC控制器18控制。该控制器可以适于根据若干格式之一产生P-SCH。 PSCNEW具有这样的属性，即它是由多个组成序列构成的分层格洛序列，其中至少一个组成序列是Golay序列，并且它与在非MBSFN能力的WCDMA中使用的主要和次要同步码正交。

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