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    TIME-DOMAIN TRANSMIT AND RECEIVE PROCESSING USING SINGULAR VALUE DECOMPOSITION FOR MIMO SYSTEMS
    15.
    发明公开
    TIME-DOMAIN TRANSMIT AND RECEIVE PROCESSING USING SINGULAR VALUE DECOMPOSITION FOR MIMO SYSTEMS 有权
    SENDE- UND EMPFANGSVERARBEITUNG MITSINGULÄRWERT-ZERLEGUNGFÜRMIMO-SYSTEME

    公开(公告)号：EP1451964A2

    公开(公告)日：2004-09-01

    申请号：EP02792324.2

    申请日：2002-12-03

    申请人： Qualcomm Incorporated

    发明人： KETCHUM, John, W. ,  WALLACE, Mark ,  HOWARD, Steven, J. ,  WALTON, Jay, R.

    IPC分类号： H04L1/00 ,  H04L25/03

    CPC分类号： H04B7/0417 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L25/03343 ,  H04L25/03834 ,  H04L27/2601 ,  H04L27/2647 ,  H04L2025/0349 ,  H04L2025/03605

    摘要： Techniques for processing a data transmission at the transmitter and receiver. In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and "water-pouring" results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to "precondition" modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing. Water-pouring analysis is used to more optimally allocate the total available transmit power to the eigen-modes, which then determines the data rate and the coding and modulation scheme to be used for each eigen-mode.

    摘要翻译： 用于在发射机和接收机处理数据传输的技术。 在一方面，提供了使用频域奇异值分解和“注水”结果在发射机和接收机处导出时域脉冲整形和波束导引解决方案的时域实现。 在发射机处执行奇异值分解以确定MIMO信道的本征模式（即，空间子信道），并导出用于“调节前”调制符号的第一组导引向量。 奇异值分解也在接收机处执行，以导出用于预处理接收信号的第二组导引向量，使得在接收机处恢复正交符号流，这可以简化接收机处理。 水浇注分析用于更好地将总可用发射功率分配给本征模式，该特征模式确定了要用于每个本征模式的数据速率和编码和调制方案。

    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM
    16.
    发明公开
    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM 有权
    VERFAHREN UND VORRICHTUNG ZUR STEUERUNG VONÜBERTRAGUNGENEINES KOMMUNIKATIONSSYSTEMS

    公开(公告)号：EP1269654A2

    公开(公告)日：2003-01-02

    申请号：EP01922596.0

    申请日：2001-03-20

    申请人： Qualcomm Incorporated

    发明人： WALTON, Jay, R. ,  WALLACE, Mark ,  HOLTZMAN, Jack ,  ANTONIO, Franklin, P.

    IPC分类号： H04B7/005 ,  H04Q7/36 ,  H04Q7/38

    CPC分类号： H04W52/343 ,  H04B17/336 ,  H04B17/382 ,  H04W52/24 ,  H04W52/241 ,  H04W52/244 ,  H04W52/267 ,  H04W52/286 ,  H04W52/346 ,  H04W72/1231 ,  H04W72/1242 ,  H04W72/1252

    摘要： In some aspects, each cell in the communications system can be designed to operate in accordance with a set of back-off factors that identify the reductions in peak transmit power levels for the channels associated with the back-off factors. The back-off factors are defined to provide the required power to a large percentage of the users while reducing the amount of interference. In some other aspects, the cells operate using an adaptive reuse scheme that allows the cells to efficiently allocate and reallocate the system resources to reflect changes in the system. A reuse scheme is initially defined and resources are allocated to the cells. During operation, changes in the operating conditions of the system are detected and the reuse scheme is redefined as necessary based on the detected changes. For example, the loading conditions of the cells can be detected, and the resources can be reallocated and/or the reuse scheme can be redefined. In yet other aspects, techniques are provided to efficiency schedule data transmissions and to assign channels to users. Data transmissions can be scheduled based on user priorities, some fairness criteria, system requirements, and other factors. Users are assigned to available channels based on a number of channel assignment schemes. Channel metrics are also provided, which can be used to prioritize users and for channel assignments.

    摘要翻译： 在一些方面，通信系统中的每个小区可以被设计为根据一组回退因子进行操作，所述一组回退因子识别与所述回退因子相关联的信道的峰值发射功率水平的降低。 限制因素被定义为为大量用户提供所需的功率，同时减少干扰量。 在一些其他方面，小区使用自适应重用方案来操作，其允许小区有效地分配和重新分配系统资源以反映系统中的变化。 最初定义了重用方案，并将资源分配给小区。 在操作期间，检测到系统的操作条件的变化，并且基于检测到的变化，根据需要重新定义重新使用方案。 例如，可以检测小区的加载条件，并且可以重新分配资源和/或重新定义重用方案。 在其他方面，提供了用于效率调度数据传输并向用户分配信道的技术。 数据传输可以根据用户优先级，一些公平标准，系统要求和其他因素进行调度。 基于多个信道分配方案将用户分配给可用信道。 还提供了渠道指标，可用于对用户和渠道分配进行优先级排序。

    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM
    17.
    发明授权
    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM 有权
    方法和装置用于控制通信系统的传输

    公开(公告)号：EP1269654B1

    公开(公告)日：2012-12-05

    申请号：EP01922596.0

    申请日：2001-03-20

    申请人： QUALCOMM INCORPORATED

    发明人： WALTON, Jay, R. ,  WALLACE, Mark ,  HOLTZMAN, Jack ,  ANTONIO, Franklin, P.

    IPC分类号： H04W52/24 ,  H04W52/34 ,  H04W52/26 ,  H04B17/00

    CPC分类号： H04W52/343 ,  H04B17/336 ,  H04B17/382 ,  H04W52/24 ,  H04W52/241 ,  H04W52/244 ,  H04W52/267 ,  H04W52/286 ,  H04W52/346 ,  H04W72/1231 ,  H04W72/1242 ,  H04W72/1252

    摘要： In some aspects, each cell in the communications system can be designed to operate in accordance with a set of back-off factors that identify the reductions in peak transmit power levels for the channels associated with the back-off factors. The back-off factors are defined to provide the required power to a large percentage of the users while reducing the amount of interference. In some other aspects, the cells operate using an adaptive reuse scheme that allows the cells to efficiently allocate and reallocate the system resources to reflect changes in the system. A reuse scheme is initially defined and resources are allocated to the cells. During operation, changes in the operating conditions of the system are detected and the reuse scheme is redefined as necessary based on the detected changes. For example, the loading conditions of the cells can be detected, and the resources can be reallocated and/or the reuse scheme can be redefined. In yet other aspects, techniques are provided to efficiency schedule data transmissions and to assign channels to users. Data transmissions can be scheduled based on user priorities, some fairness criteria, system requirements, and other factors. Users are assigned to available channels based on a number of channel assignment schemes. Channel metrics are also provided, which can be used to prioritize users and for channel assignments.