公开(公告)号：JP2013081188A

公开(公告)日：2013-05-02

申请号：JP2012248487

申请日：2012-11-12

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY R ,  WALLACE MARK

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

CPC classification number: H04B7/0417 ,  H04B7/043 ,  H04B7/0439 ,  H04B7/0443 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0854 ,  H04L1/0002 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI).SOLUTION: Transmission schemes 200 may include: a partial-CSI transmission scheme that transmits a single data stream on each transmit antenna selected for use; and a "beam-forming" transmission scheme that allocates all transmit power to a single transmission channel having the best performance. Each transmission scheme may provide good or near-optimum performance for a specific range of operating conditions (or operating SNRs). Therefore, these multiple transmission schemes may then be combined in a piece-wise fashion to form a "multi-mode" transmission scheme that covers the full range of operating conditions supported by the MIMO system.

Abstract translation: 要解决的问题：提供使用需要较少信道状态信息（CSI）的多个传输方案来在多信道通信系统中的多个传输信道上发送数据的技术。 解决方案：传输方案200可以包括：部分CSI传输方案，其在选择使用的每个发射天线上发射单个数据流; 以及将所有发射功率分配给具有最佳性能的单个传输信道的“波束形成”传输方案。 每个传输方案可以为特定范围的操作条件（或操作SNR）提供良好或接近最佳的性能。 因此，这些多个传输方案然后可以以分段方式组合以形成覆盖由MIMO系统支持的全部范围的操作条件的“多模式”传输方案。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2010154540A

公开(公告)日：2010-07-08

申请号：JP2010015555

申请日：2010-01-27

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY R ,  WALLACE MARK

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

CPC classification number: H04B7/0417 ,  H04B7/043 ,  H04B7/0439 ,  H04B7/0443 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0854 ,  H04L1/0002 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI). SOLUTION: These schemes may also include a partial-CSI transmission scheme that transmits a single data stream on each transmit antenna selected for use and a "beam-forming" transmission scheme that allocates all transmit power to a single transmission channel having the best performance. Each transmission scheme may provide good or near-optimum performance for a specific range of operating conditions (or operating SNRs). These multiple transmission schemes may then be combined by division to form a "multi-mode" transmission scheme that covers the full range of operating conditions supported by the MIMO system. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供使用需要较少信道状态信息（CSI）的多个传输方案来在多信道通信系统中的多个传输信道上发送数据的技术。 解决方案：这些方案还可以包括在被选择使用的每个发射天线上发送单个数据流的部分CSI传输方案以及将所有发射功率分配给具有所述传输信道的单个传输信道的“波束形成”传输方案 最棒的表演。 每个传输方案可以为特定范围的操作条件（或操作SNR）提供良好或接近最佳的性能。 然后可以通过划分来组合这些多个传输方案以形成覆盖由MIMO系统支持的全部操作条件范围的“多模式”传输方案。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009239917A

公开(公告)日：2009-10-15

申请号：JP2009108682

申请日：2009-04-28

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY R ,  KETCHUM JOHN W

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04W16/28 ,  H04W52/24

CPC classification number: H04B7/0417 ,  H04B7/0619 ,  H04L1/0001 ,  H04L1/06 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide a technique for controlling power to transmit a plurality of data flows in a radio multiple channel (e.g., MIMO) communication system. SOLUTION: A plurality of received symbol flows are processed according to a specific receiver processing technology (e.g., CCMI, CCMI-SC, MMSE or MMSE-SC) to first give a plurality of detected data flows. Post-detection SNRs of the detected data flows are evaluated and respective SNRs exceeding a set point is identified. This set point is correspondent to (1) an SNR required to obtain a maximum permissible spectral efficiency or (2) a target SNR required to obtain a specified spectral efficiency. A new (or adjusted) transmission power of each detected data flow related to the post-detection SNR exceeding the set point is determined and applied to the data flow. A different power control method is applied to a class of different receiver processing technique having a different characteristic. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于控制在无线多信道（例如，MIMO）通信系统中发送多个数据流的功率的技术。 解决方案：根据特定的接收机处理技术（例如，CCMI，CCMI-SC，MMSE或MMSE-SC）处理多个接收到的符号流，以首先给出多个检测到的数据流。 对检测到的数据流的检测后SNR进行评估，并且识别出超过设定点的各个SNR。 该设定点对应于（1）获得最大允许频谱效率所需的SNR或（2）获得特定频谱效率所需的目标SNR。 确定与超过设定点的检测后SNR相关的每个检测到的数据流的新（或调整的）发送功率并将其应用于数据流。 不同的功率控制方法被应用于具有不同特性的一类不同的接收机处理技术。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2013179618A

公开(公告)日：2013-09-09

申请号：JP2013083158

申请日：2013-04-11

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： WALLACE MARK S ,  WALTON JAY RODNEY ,  MEDVEDEV IRINA

IPC: H04J11/00 ,  H04J1/00

CPC classification number: H04L27/2679 ,  H04L7/042 ,  H04L7/08 ,  H04L27/2655 ,  H04L27/2676

Abstract: PROBLEM TO BE SOLVED: To provide a method for identifying a reference point in time in a wireless communication system.SOLUTION: The method includes: receiving a first repeated sequence of symbols; receiving a second repeated sequence of symbols; performing autocorrelation between the first and second sequences of symbols; and identifying as the reference point in time an autocorrelation null between the first and second repeated sequences of symbols. An apparatus for identifying the reference point in time includes: means for receiving the first repeated sequence of symbols; means for receiving the second repeated sequence of symbols; means for performing autocorrelation between the first and second sequences of symbols; and means for identifying as the reference point in time the autocorrelation null between the first and second repeated sequences of symbols.

Abstract translation: 要解决的问题：提供一种用于在无线通信系统中识别参考时间点的方法。解决方案：该方法包括：接收第一重复符号序列; 接收第二重复符号序列; 执行第一和第二符号序列之间的自相关; 并且将第一和第二重复符号序列之间的自相关空值识别为时间上的参考点。 用于识别参考时间点的装置包括：用于接收第一重复符号序列的装置; 用于接收第二重复符号序列的装置; 用于执行第一和第二符号序列之间的自相关的装置; 以及用于将所述第一和第二重复符号序列之间的自相关为零的时间标识为所述参考点的装置。

公开(公告)号：JP2013031192A

公开(公告)日：2013-02-07

申请号：JP2012185380

申请日：2012-08-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： BJORN BJERKE ,  MEDVEDEV IRINA ,  KETCHUM JOHN W ,  WALLACE MARK S ,  JAY RODNEY WALTON

IPC: H04J99/00 ,  H03M13/39 ,  H04J11/00

CPC classification number: H04L27/2647 ,  H04L1/005 ,  H04L1/0052 ,  H04L1/06 ,  H04L25/03171 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: PROBLEM TO BE SOLVED: To provide techniques for performing detection and decoding with reduced complexity while achieving good performance for a MIMO receiver.SOLUTION: Spatial processing is performed on a set of received symbols (812). Extrinsic LLRs are computed independently for each of at least one data symbol on the basis of a corresponding detected symbol and a priori LLRs, if any, from a decoder (814). A list of candidate hypotheses is determined for the remaining data symbols by performing a search using LSD, etc. (816). Extrinsic LLRs are computed for the remaining data symbols with the list of candidate hypotheses (818). The extrinsic LLRs for all the data symbols are decoded to obtain a priori LLRs for a detector (820). A determination is made whether to perform iteration (822). The extrinsic LLRs from the detector are processed to obtain decoded data (826).

Abstract translation: 要解决的问题：提供以降低的复杂度执行检测和解码的技术，同时为MIMO接收机实现良好的性能。 解决方案：对一组接收的符号进行空间处理（812）。 基于对应的检测符号和来自解码器（814）的先验LLR（如果有的话），对于至少一个数据符号中的每一个单独计算外部LLR。 通过使用LSD等进行搜索，确定剩余数据符号的候选假设的列表（816）。 使用候选假设列表计算剩余数据符号的外在LLR（818）。 用于所有数据符号的外在LLR被解码以获得用于检测器（820）的先验LLR。 确定是否执行迭代（822）。 来自检测器的外在LLR被处理以获得解码数据（826）。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012182801A

公开(公告)日：2012-09-20

申请号：JP2012090199

申请日：2012-04-11

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： J RODNEY WALTON ,  WALLACE MARK S ,  MEDVEDEV IRINA ,  HOWARD STEVEN J

IPC: H04J11/00 ,  H04B7/04 ,  H04J99/00

CPC classification number: H04L27/0014 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/061 ,  H04L27/261 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2027/0053 ,  H04L2027/0067 ,  H04L2027/0087

Abstract: PROBLEM TO BE SOLVED: To provide techniques for performing phase correction for wireless communication.SOLUTION: Received pilot symbols and received data symbols are obtained from an orthogonal frequency division multiplexing (OFDM) and/or multiple-input multiple-output (MIMO) transmission. First phase information is obtained based upon the received pilot symbols. Second phase information is obtained based upon the received data symbols. The phase of the received data symbols is corrected based upon the first and second phase information (directly and/or indirectly). For example, the phase of the received data symbols may be corrected based upon the first phase information, detection may be performed on the phase corrected data symbols to obtain estimated data symbols, the second phase information may be obtained based upon the estimated data symbols, and the phase of the estimated data symbols may be corrected based upon the second phase information. The phase correction may also be performed in various manners.

Abstract translation: 要解决的问题：提供用于进行无线通信的相位校正的技术。 解决方案：从正交频分复用（OFDM）和/或多输入多输出（MIMO）传输获得接收到的导频符号和接收的数据符号。 基于接收到的导频符号获得第一相位信息。 基于接收到的数据符号获得第二相位信息。 基于第一和第二相位信息（直接和/或间接地）校正接收到的数据符号的相位。 例如，可以基于第一相位信息来校正接收到的数据符号的相位，可以对相位校正数据符号执行检测以获得估计的数据符号，可以基于估计的数据符号获得第二相位信息， 并且可以基于第二相位信息来校正估计数据符号的相位。 相位校正也可以以各种方式进行。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011205677A

公开(公告)日：2011-10-13

申请号：JP2011116899

申请日：2011-05-25

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： WALLACE MARK S ,  MEDVEDEV IRINA ,  WALTON JAY RODNEY

IPC: H04B7/02 ,  H04J11/00 ,  H04J99/00

CPC classification number: H04L25/0242 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0854 ,  H04L1/0606 ,  H04L1/0618 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0256 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2025/03426

Abstract: PROBLEM TO BE SOLVED: To provide a receiver structure for spatial spreading with space-time or space-frequency transmit diversity.SOLUTION: A receiving entity 150 obtains received symbols for data transmission, which has at least one data symbol stream sent with space-time transmit diversity (STTD). The receiving entity derives an overall channel response matrix in accordance with an STTD encoding scheme used for the data transmission, derives a spatial filter matrix based on the overall channel response matrix, and performs spatial matched filtering on a vector of the received symbols for each 2-symbol interval to obtain a vector of detected symbols for the 2-symbol interval. The receiving entity may perform post-processing (e.g., conjugation) on the detected symbols if needed. Alternatively, the receiving entity derives the spatial filter matrix based on an effective channel response matrix, performs the spatial matched filtering on the received symbols for each symbol period to obtain detected symbols.

Abstract translation: 要解决的问题：提供用于具有时空或空间 - 频率发射分集的空间扩展的接收机结构。解决方案：接收实体150获得用于数据传输的接收符号，其具有随时间发送的至少一个数据符号流 发射分集（STTD）。 接收实体根据用于数据传输的STTD编码方案导出整体信道响应矩阵，基于整体信道响应矩阵导出空间滤波器矩阵，并且对于每个2的接收符号的向量执行空间匹配滤波 符号间隔，以获得用于2符号间隔的检测符号的向量。 如果需要，接收实体可以在检测到的符号上执行后处理（例如，共轭）。 或者，接收实体基于有效信道响应矩阵导出空间滤波器矩阵，对每个符号周期对接收到的符号执行空间匹配滤波，以获得检测符号。

公开(公告)号：JP2011182420A

公开(公告)日：2011-09-15

申请号：JP2011083104

申请日：2011-04-04

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY RODNEY

IPC: H04J99/00 ,  H04J11/00

CPC classification number: H04L1/0002 ,  H04B7/0413 ,  H04L1/0015 ,  Y02B60/31 ,  Y02D50/10

Abstract: PROBLEM TO BE SOLVED: To provide a rate combination with a highest overall throughput and a non-negative total SNR (Signal Noise Ratio) margin.
SOLUTION: For rate selection with margin sharing in a system with a vector-quantized rate set, SNR estimates are obtained for usable transmission channels. The total SNR margin is determined for each rate combination based on the SNR estimates for the transmission channels. Each rate combination is associated with a specific number of data streams to transmit, a rate for each data stream and an efficient overall throughput.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供具有最高总吞吐量和非负总体SNR（信号噪声比）余量的速率组合。 解决方案：对于具有矢量量化速率集的系统中的边缘共享进行速率选择，可获得可用传输信道的SNR估计。 基于传输信道的SNR估计，为每个速率组合确定总SNR容限。 每个速率组合与要发送的特定数量的数据流相关联，每个数据流的速率和有效的总吞吐量。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011125040A

公开(公告)日：2011-06-23

申请号：JP2011002259

申请日：2011-01-07

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY ROD ,  KETCHUM JOHN W

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04J11/00 ,  H04W24/00 ,  H04W52/24 ,  H04W52/26 ,  H04W52/34 ,  H04W52/50 ,  H04W72/00

CPC classification number: H04W52/346 ,  H04B7/0443 ,  H04W24/00 ,  H04W52/241 ,  H04W52/267 ,  H04W52/50 ,  H04W72/00

Abstract: PROBLEM TO BE SOLVED: To provide a method of reallocating excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems. SOLUTION: The total transmit power may be initially allocated to the transmission channels based on a particular power allocation scheme. The initial allocation may result in more power being allocated to some transmission channels than needed to achieve the required SNR. In such situations, the techniques reallocate the excess transmit power of transmission channels operated in the saturation region to other transmission channels operated below the saturation region. In this way, higher data rate may be achieved for the "poorer" transmission channels without sacrificing the performance of the "better" transmission channels. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种重新分配用于全信道状态信息（CSI）多输入多输出（MIMO）系统的多余功率的方法。 解决方案：总发射功率可以基于特定的功率分配方案最初分配给传输信道。 初始分配可以导致比实现所需的SNR所需的更多的功率被分配给一些传输信道。 在这种情况下，这些技术将在饱和区域中运行的传输信道的多余发射功率重新分配到在饱和区域以下运行的其它传输信道。 以这种方式，对于“较差”的传输信道可以实现更高的数据速率，而不牺牲“更好”的传输信道的性能。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010158034A

公开(公告)日：2010-07-15

申请号：JP2010015556

申请日：2010-01-27

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MEDVEDEV IRINA ,  WALTON JAY R ,  WALLACE MARK

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

CPC classification number: H04B7/0417 ,  H04B7/043 ,  H04B7/0439 ,  H04B7/0443 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0854 ,  H04L1/0002 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04W52/42

Abstract: PROBLEM TO BE SOLVED: To provide techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI). SOLUTION: A method for transmitting data on a plurality of transmission channels includes: determining an operating condition of a communication system and identifying a specific transmission scheme selected from among a plurality of possible transmission schemes on the basis of the determined operating condition (S214); and determining one or more data streams to be transmitted on the basis of the selected transmission scheme and processing the one or more data streams on the basis of the selected transmission scheme (S220). COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供使用需要较少信道状态信息（CSI）的多个传输方案来在多信道通信系统中的多个传输信道上发送数据的技术。 解决方案：一种用于在多个传输信道上发送数据的方法包括：基于所确定的操作条件，确定通信系统的操作条件并识别从多个可能传输方案中选择的特定传输方案（ S214）; 以及基于所选择的传输方案确定要发送的一个或多个数据流，并且基于所选择的传输方案处理所述一个或多个数据流（S220）。 版权所有（C）2010，JPO＆INPIT