公开(公告)号：US08446939B2

公开(公告)日：2013-05-21

申请号：US12764247

申请日：2010-04-21

Applicant: Yi-Pin Eric Wang ,  Jung-Fu Cheng

Inventor： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC classification number: H04L27/2647 ,  H04J11/004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L5/0046 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2636

Abstract: A receive signal processor jointly detects two or more symbols in a signal-of-interest in the presence of one or more other MIMO signals. The signal-to-interference-plus-noise ratio for each signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signals-of-interest, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier signal-to-interference-plus-noise ratios of the subcarriers. A controller determines one or more transmission formats for uplink transmissions based on the signal-to-interference-plus-noise ratios. The process of computing per-subcarrier signal-to-interference-plus-noise ratio reflects the amount of MIMO interference already cancelled or still remaining in the signal arriving at the joint detector.

Abstract translation: 接收信号处理器在存在一个或多个其它MIMO信号的情况下联合检测感兴趣的信号中的两个或多个符号。 通过对分配给感兴趣信号的多个子载波计算每副载波信号与干扰加噪声比来确定每个感兴趣信号的信号与干扰加噪声比，以及 基于子载波的每副载波信号与干扰加噪声比，计算子载波的总信噪比加噪声比。 控制器基于信号与干扰加噪声比确定用于上行链路传输的一种或多种传输格式。 计算每子载波信号与干扰加噪声比的过程反映已经消除或仍然存在于到达联合检测器的信号中的MIMO干扰的量。

公开(公告)号：US08432952B2

公开(公告)日：2013-04-30

申请号：US10720492

申请日：2003-11-24

Applicant: Tracy Fulghum ,  Gregory Edward Bottomley ,  Yi-Pin Eric Wang ,  Ali S. Khayrallah

Inventor： Tracy Fulghum ,  Gregory Edward Bottomley ,  Yi-Pin Eric Wang ,  Ali S. Khayrallah

IPC: H04B1/707

CPC classification number: H04B1/7107 ,  H04B1/712 ,  H04B2201/709727 ,  H04J13/0048

Abstract: Interference, such as inter-symbol interference, from a symbol of interest in a RAKE receiver is reduced. The RAKE receiver comprises a plurality of RAKE fingers, a processor, and a combiner. The plurality of RAKE fingers despread symbols received over multiple paths of a multi-path channel. The processor determines cross-correlations between symbol waveforms from different symbols and multiple paths. The combiner combines the despread symbols using the cross-correlations to reduce interference from the symbol of interest.

Abstract translation: 来自RAKE接收机中感兴趣的符号的干扰，诸如符号间干扰，减少了。 RAKE接收机包括多个RAKE指，处理器和组合器。 多个RAKE手指解扩在多路径信道的多个路径上接收的符号。 处理器确定来自不同符号和多个路径的符号波形之间的互相关。 组合器使用互相关组合解扩符号，以减少来自感兴趣符号的干扰。

公开(公告)号：US08413021B2

公开(公告)日：2013-04-02

申请号：US13588791

申请日：2012-08-17

Applicant: Yi-Pin Eric Wang ,  Jung-Fu Cheng

Inventor： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC: H03M13/00

CPC classification number: H04L1/005

Abstract: Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

Abstract translation: 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US08400905B2

公开(公告)日：2013-03-19

申请号：US12808784

申请日：2008-09-18

Applicant: Lars Lindbom ,  Dirk Gerstenberger ,  Yi-Pin Eric Wang

Inventor： Lars Lindbom ,  Dirk Gerstenberger ,  Yi-Pin Eric Wang

IPC: H04H20/71

CPC classification number: H04B1/7083 ,  H04B2201/70701 ,  H04J13/0014 ,  H04J13/102

Abstract: 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.

Abstract translation: 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 。

公开(公告)号：US20120311398A1

公开(公告)日：2012-12-06

申请号：US13588791

申请日：2012-08-17

Applicant: Yi-Pin Eric Wang ,  Jung-Fu Cheng

Inventor： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC: H03M13/05 ,  G06F11/10

CPC classification number: H04L1/005

Abstract: Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

Abstract translation: 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US08315344B2

公开(公告)日：2012-11-20

申请号：US12421059

申请日：2009-04-09

Applicant: Markus Ringström ,  Pär Moqvist ,  Yi-Pin Eric Wang

Inventor： Markus Ringström ,  Pär Moqvist ,  Yi-Pin Eric Wang

IPC: H04B1/10

CPC classification number: H04B1/7103 ,  H04B2201/70705 ,  H04B2201/70707 ,  H04W24/00

Abstract: The transport format (TF) of a signal may be blindly detected from a reduced set of TF hypotheses. In an example embodiment, a method for the blind detection of a TF of a signal includes filtering a set of transport format hypotheses to identify a reduced set of TF hypotheses using one or more filtering schemes. From the reduced set of TF hypotheses, a TF that is associated with an interfering signal is detected. The TF includes a modulation and a spreading factor for the interfering signal. It may also include a number of channelization codes. In an example implementation, when an interfering signal is to be canceled, symbols carried by the signal are detected using the detected TF. Example filtering schemes include filtering based on system design/operation, filtering based on known configuration information, filtering based on an expected level of interference contribution, and so forth.

Abstract translation: 信号的传输格式（TF）可以从减少的一组TF假设中盲目地检测出来。 在示例实施例中，用于盲检测信号的TF的方法包括：使用一个或多个过滤方案来过滤一组传输格式假设以识别减少的TF假设集合。 从减少的TF假设集合中，检测到与干扰信号相关联的TF。 TF包括用于干扰信号的调制和扩频因子。 它还可以包括多个信道化码。 在示例实现中，当要消除干扰信号时，使用检测到的TF检测由信号携带的符号。 示例性过滤方案包括基于系统设计/操作的过滤，基于已知配置信息的过滤，基于预期干扰贡献水平的过滤等等。

公开(公告)号：US08249518B2

公开(公告)日：2012-08-21

申请号：US11254172

申请日：2005-10-19

Applicant: Stephen J. Grant ,  Jung-Fu Cheng ,  Yi-Pin Eric Wang ,  Karl J. Molnar ,  Leonld Krasny

Inventor： Stephen J. Grant ,  Jung-Fu Cheng ,  Yi-Pin Eric Wang ,  Karl J. Molnar ,  Leonld Krasny

IPC: H04B7/00 ,  H04W72/02

CPC classification number: H04B7/0645 ,  H04B1/71072 ,  H04B1/712 ,  H04B7/04 ,  H04B7/06 ,  H04B7/0632 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/06

Abstract: In a selective MIMO system, the mobile station provides channel quality feedback for one or more possible transmission mode. The mobile station provides channel quality feedback for a first mode regardless of channel conditions and determines whether to provide feedback for one or more additional modes based on current channel conditions.

Abstract translation: 在选择性MIMO系统中，移动台为一个或多个可能的传输模式提供信道质量反馈。 无论频道条件如何，移动台都提供第一模式的信道质量反馈，并根据当前的信道状况确定是否为一个或多个附加模式提供反馈。

公开(公告)号：US08176376B2

公开(公告)日：2012-05-08

申请号：US11905173

申请日：2007-09-27

Applicant: Jung-fu Cheng ,  Bo Göransson ,  Stefan Parkvall ,  Yi-Pin Eric Wang

Inventor： Jung-fu Cheng ,  Bo Göransson ,  Stefan Parkvall ,  Yi-Pin Eric Wang

IPC: H04L1/18 ,  H03M13/00

CPC classification number: H04L1/1607 ,  H04L1/004 ,  H04L1/0073 ,  H04L1/1812 ,  H04L2001/125

Abstract: Error protection based on a nonlinear code set may be used in a multiple input multiple output (MIMO) radio communications system. A decoder decodes received MIMO data streams and generates an automatic repeat request (ARQ) message for data units received for the MIMO data streams for each transmission time interval. An encoder codes the ARQ message using a code word from a nonlinear code set. At the data transmitter, which transmits one or more data units in transmission time intervals from two or more MIMO data streams, the ARQ message associated with the transmitted data units is decoded using a code word from the nonlinear code set.

Abstract translation: 可以在多输入多输出（MIMO）无线电通信系统中使用基于非线性码集的错误保护。 解码器解码所接收的MIMO数据流，并为每个传输时间间隔为MIMO数据流接收的数据单元生成自动重复请求（ARQ）消息。 编码器使用来自非线性码集的码字对ARQ消息进行编码。 在从两个或多个MIMO数据流以传输时间间隔发送一个或多个数据单元的数据发射机处，使用来自非线性码集的码字来解码与发送的数据单元相关联的ARQ消息。

公开(公告)号：US08126043B2

公开(公告)日：2012-02-28

申请号：US12035846

申请日：2008-02-22

Applicant: Gregory E. Bottomley ,  Yi-Pin Eric Wang

Inventor： Gregory E. Bottomley ,  Yi-Pin Eric Wang

IPC: H03H7/30 ,  H03K5/159

CPC classification number: H04L25/03203 ,  H04B1/7105 ,  H04L25/03248 ,  H04L25/03318 ,  H04L2025/0342

Abstract: Teachings presented herein combine the relative simplicity of equalization with the performance of maximum likelihood (ML) processing. These teachings are applied to the detection of symbols in a stream of symbol blocks. In one or more embodiments, block-based equalization, including feedforward filtering, suppresses inter-block interference and produces detection statistics for the symbols in each symbol block, and joint detection addresses intra-block interference by jointly detecting the most likely combination of symbols within each symbol block, based on the corresponding detection statistics. The joint detection obviates the need to address intra-block interference within the equalization filters, while, at the same time, the block-based equalization produces detection statistics for each symbol block thereby simplifying the joint detection process. Overall complexity is less than would be needed for full MLSE processing of the symbol blocks without equalization preprocessing, while performance is close to or on par with full MLSE processing.

Abstract translation: 本文提出的教学将均衡的相对简单性与最大似然（ML）处理的性能相结合。 这些教导应用于符号块流中符号的检测。 在一个或多个实施例中，包括前馈滤波的基于块的均衡抑制块间干扰并且产生每个符号块中的符号的检测统计，并且联合检测通过联合检测在块内干扰中最可能的符号组合 每个符号块，根据相应的检测统计。 联合检测不需要解决均衡滤波器内的块内干扰，同时基于块的均衡产生每个符号块的检测统计量，从而简化了联合检测过程。 总体复杂度小于没有均衡预处理的符号块的全MLSE处理所需要的，而性能接近于或与完全MLSE处理相当。

公开(公告)号：US20110222618A1

公开(公告)日：2011-09-15

申请号：US12722169

申请日：2010-03-11

Applicant: Fredrik Huss ,  Yi-Pin Eric Wang

Inventor： Fredrik Huss ,  Yi-Pin Eric Wang

IPC: H04L23/02

CPC classification number: H04L25/067 ,  H04L27/38

Abstract: In one aspect, the present invention greatly simplifies soft modulation calculations, in part by exploiting certain properties of Gray-mapped QAM constellations used in modulating symbols of interest. In at least one embodiment, the simplified processing includes performing the soft modulation separately for the real and imaginary parts of each symbol of interest, by using the Gray mapping to decompose each of the real and imaginary parts into binary soft modulations for each bit, and then using a computationally-efficient table lookup to calculate the binary soft modulation. Here, the look-up table comprises pre-computed bit contributions to the complex soft symbol value to be formed for the symbol of interest.

Abstract translation: 在一个方面，本发明大大简化了软调制计算，部分地通过利用在调制感兴趣符号中使用的灰色映射QAM星座的某些属性。 在至少一个实施例中，简化处理包括通过使用格雷映射将每个实部和虚部分解为每个位的二进制软调制来分别对每个感兴趣符号的实部和虚部进行软调制，以及 然后使用计算有效的表查找来计算二进制软调制。 这里，查找表包括对要为感兴趣的符号形成的复合软符号值的预先计算的比特贡献。