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    Method and apparatus to balance maximum information rate with quality of service in a MIMO system
    1.
    发明申请
    Method and apparatus to balance maximum information rate with quality of service in a MIMO system 失效
    在MIMO系统中平衡最大信息速率与服务质量的方法和装置

    公开(公告)号：US20060056534A1

    公开(公告)日：2006-03-16

    申请号：US10940060

    申请日：2004-09-13

    申请人： Dumitru Ionescu ,  Balaji Raghothaman

    发明人： Dumitru Ionescu ,  Balaji Raghothaman

    IPC分类号： H04L1/02

    CPC分类号： H04L1/006 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/0687

    摘要： Disclosed is a method to operate a wireless MIMO communication system, where the method includes, for N symbols of a frame of information to be transmitted through a plurality of eigen sub-channels, allocating N1, symbols to a stronger eigen sub-channel and N2 symbols to a weaker eigen sub-channel, where N1, >N2; determining a probability of reception error when transmitting the N2 symbols through the weaker eigen sub-channel for an auxiliary signal-to-noise ratio; solving for a quality of service QoS of the weaker eigen sub-channel and if the QoS is less than a desired QoS, decreasing the value of N and repeating allocating symbols, determining the probability of reception error and solving for the QoS. The symbols may be systematic symbols output from a turbo coder, and thus replicate the original source bits. In another aspect this invention provides a method to operate a wireless MIMO communication system that includes asymmetrically allocating spreading codes to a stronger eigen sub-channel and to a weaker eigen sub-channel such that the stronger eigen sub-channel is allocated more spreading codes than the weaker eigen sub-channel; and transmitting all systematic bits of turbo coded information over the stronger eigen sub-channel.

    摘要翻译： 公开了一种操作无线MIMO通信系统的方法，其中该方法包括：通过多个本征子信道发送的信息帧的N个符号，分配N 1个符号到 更强的本征子信道和N 2个符号分配给较弱的特征子信道，其中N 1，N 2，N 2， 当辅助信噪比通过较弱的本征子信道发送N 2个符号时，确定接收错误的概率; 解决较弱本征子信道的服务质量QoS，如果QoS小于期望的QoS，则减小N的值并重复分配符号，确定接收错误的概率并解决QoS。 符号可以是从turbo编码器输出的系统符号，并且因此复制原始源比特。 在另一方面，本发明提供了一种操作无线MIMO通信系统的方法，该无线MIMO通信系统包括将扩展码不对称地分配给更强的本征子信道和较弱的本征子信道，使得更强的本征子信道被分配更多的扩频码 弱特征子信道; 并通过更强的本征子信道发送turbo编码信息的所有系统比特。

    METHOD, SYSTEM, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PLACING PILOTS IN A MULTICARRIER MIMO SYSTEM
    2.
    发明申请
    METHOD, SYSTEM, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR PLACING PILOTS IN A MULTICARRIER MIMO SYSTEM 审中-公开
    方法，系统，装置和计算机程序产品，用于在多功能MIMO系统中配置PILOTS

    公开(公告)号：US20070087749A1

    公开(公告)日：2007-04-19

    申请号：US11463920

    申请日：2006-08-11

    申请人： Dumitru Ionescu ,  Balaji Raghothaman

    发明人： Dumitru Ionescu ,  Balaji Raghothaman

    IPC分类号： H04J11/00

    CPC分类号： H04L5/0048 ,  H04B7/04 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03828 ,  H04L27/2604 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2662

    摘要： A method, system, apparatus and computer program product are provided for placing pilot symbols in an OFDM system using sets of multidimensional points having a structure that is derived from discernible expansions of generalized orthogonal designs. These sets of multidimensional points may be used to form pilot symbols on a two-dimensional frequency-time pilot symbol grid for sampling the flat fading process on various subcarriers of an OFDM MIMO system, transmit antennas, and OFDM symbols. The pilot information associated with the pilot symbols may be used to perform initial carrier synchronization and OFDM symbol timing while discerning between candidate base stations.

    摘要翻译： 提供了一种方法，系统，装置和计算机程序产品，用于在OFDM系统中使用具有从广义正交设计的可辨识的扩展导出的结构的多维点集合来放置导频符号。 这些多维点集合可以用于在二维频率 - 时间导频符号网格上形成用于对OFDM MIMO系统，发射天线和OFDM符号的各个子载波上的平坦衰落过程进行采样的导频符号。 与导频符号相关联的导频信息可以用于在候选基站之间进行识别时执行初始载波同步和OFDM符号定时。

    Mitigating interference using cooperative scheduling
    3.
    发明授权
    Mitigating interference using cooperative scheduling 有权
    使用协同调度减轻干扰

    公开(公告)号：US08718697B2

    公开(公告)日：2014-05-06

    申请号：US12575113

    申请日：2009-10-07

    申请人： Anand Srinivas ,  Pierre A. Humblet ,  Balaji Raghothaman

    发明人： Anand Srinivas ,  Pierre A. Humblet ,  Balaji Raghothaman

    IPC分类号： H04B7/00

    CPC分类号： H04W52/287 ,  H04B1/7103 ,  H04B2201/70702 ,  H04B2201/709709 ,  H04W52/143 ,  H04W52/46

    摘要： Among other things, a method performed by a first access point is described. The method includes outputting signals. At least some of the signals interfere with communication between a device and a second access point. The method also includes determining whether to output the signals in a predefined mode based on dynamically calculated values of a parameter. The parameter is related to signal interference at the device. If it is determined to output the signals in the predefined mode, for a time period, the first access point outputs signals in the predefined mode.

    摘要翻译： 其中，描述了由第一接入点执行的方法。 该方法包括输出信号。 至少一些信号干扰设备和第二接入点之间的通信。 该方法还包括基于动态计算的参数值来确定是否以预定模式输出信号。 该参数与设备的信号干扰有关。 如果确定在预定模式下输出信号一段时间，则第一接入点以预定模式输出信号。

    Method and apparatus to balance maximum information rate with quality of service in a MIMO system
    6.
    发明授权
    Method and apparatus to balance maximum information rate with quality of service in a MIMO system 失效
    在MIMO系统中平衡最大信息速率与服务质量的方法和装置

    公开(公告)号：US07599443B2

    公开(公告)日：2009-10-06

    申请号：US10940060

    申请日：2004-09-13

    申请人： Dumitru M. Ionescu ,  Balaji Raghothaman

    发明人： Dumitru M. Ionescu ,  Balaji Raghothaman

    IPC分类号： H04B7/02

    CPC分类号： H04L1/006 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/0687

    摘要： In a wireless MIMO communication system, for N symbols of a frame of information, allocating N1 symbols to a stronger eigen sub-channel and N2 symbols to a weaker eigen sub-channel, where N1>N2; determining a probability of reception error when transmitting the N2 symbols through the weaker eigen sub-channel for an auxiliary signal-to-noise ratio; solving for a quality of service QoS of the weaker eigen sub-channel and if the QoS is less than a desired QoS, decreasing the value of N and repeating allocating symbols, determining the probability of reception error and solving for the QoS. Another aspect includes asymmetrically allocating spreading codes to a stronger eigen sub-channel and to a weaker eigen sub-channel such that the stronger eigen sub-channel is allocated more spreading codes than the weaker eigen sub-channel; and transmitting all systematic bits of turbo coded information over the stronger eigen sub-channel.

    摘要翻译： 在无线MIMO通信系统中，对于信息帧的N个符号，将N1个符号分配给更强的本征子信道，将N 2个符号分配给较弱的本征子信道，其中N1> N2; 当辅助信噪比通过较弱的本征子信道发送N 2个符号时，确定接收错误的概率; 解决较弱本征子信道的服务质量QoS，如果QoS小于期望的QoS，则减小N的值并重复分配符号，确定接收错误的概率并解决QoS。 另一方面包括将扩展码不对称地分配给更强的本征子信道和较弱的本征子信道，使得更强的本征子信道被分配比较弱的本征子信道更多的扩展码; 并通过更强的本征子信道发送turbo编码信息的所有系统比特。

    Apparatus, and associated method, for selecting antenna pattern configuration to be exhibited by an antenna assembly of a communication station
    7.
    发明授权
    Apparatus, and associated method, for selecting antenna pattern configuration to be exhibited by an antenna assembly of a communication station 失效
    用于选择由通信站的天线组件展现的天线方向图配置的设备和相关方法

    公开(公告)号：US06934563B2

    公开(公告)日：2005-08-23

    申请号：US10080954

    申请日：2002-02-22

    申请人： Balaji Raghothaman ,  Shu-Shaw Wang

    发明人： Balaji Raghothaman ,  Shu-Shaw Wang

    IPC分类号： H01Q3/26 ,  H04B1/38 ,  H04M1/00

    CPC分类号： H01Q3/2605

    摘要： Apparatus, and an associated method, for facilitating selection of antenna pattern characteristics to be exhibited by an antenna assembly of a communication station, such as a base transceiver station operable in a cellular communication system. Indications of channel conditions on an uplink channel are utilized in the determination of antenna weighting values by which to weight antenna weighting elements of the antenna assembly. In one implementation, an uplink channel correlation matrix is reformulated into vector form to reduce the computational complexity of calculations required to select the antenna weighting values. In another implementation, a discrete Fourier transform operation is performed using fast Fourier transform techniques to select the antenna weighting values.

    摘要翻译： 装置和相关联的方法，用于促进由通信站的天线组件（诸如在蜂窝通信系统中可操作的基站收发台）所呈现的天线方向图特征的选择。 在确定天线加权值时，利用上行链路信道上的信道条件的指示来加权天线组合件的天线加权元件。 在一个实现中，将上行链路信道相关矩阵重新形成向量形式，以减少选择天线加权值所需的计算的计算复杂度。 在另一实现中，使用快速傅里叶变换技术来执行离散傅里叶变换操作以选择天线加权值。

    Flexible rate split method for MIMO transmission
    8.
    发明申请
    Flexible rate split method for MIMO transmission 失效
    用于MIMO传输的灵活速率分割方法

    公开(公告)号：US20050111376A1

    公开(公告)日：2005-05-26

    申请号：US10718837

    申请日：2003-11-21

    申请人： Balaji Raghothaman ,  Jianzhong Zhang

    发明人： Balaji Raghothaman ,  Jianzhong Zhang

    IPC分类号： H04B7/00 ,  H04B7/04 ,  H04B7/06 ,  H04L20060101

    CPC分类号： H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0632 ,  H04B7/0669 ,  H04B7/0697 ,  H04L1/0002 ,  H04L1/0007 ,  H04L1/0033 ,  H04L1/0041 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/06 ,  H04L1/0656

    摘要： A method for transmitting a packet of N input bits includes encoding all of the N bits as a single entity, such as with an interleaver of length N within a turbo coder, outputting M encoded bits, channel interleaving the M bits, splitting the M encoded bits into a parallel first and second portion, and transmitting them over separate channels to achieve spatial diversity. The size of the first and second portion is determined based on a closed feedback loop that provides some knowledge of the channel, preferably a measure of channel capacity. The feedback loop may also provide channel knowledge to a subpacket selector associated with each transmit antenna, which determines an appropriate rate for that channel and selects subpackets to fill a transmission packet for that channel. The subpacket selectors choose a subpacket of systematic bits and fill the remaining transmission packet size with subpackets of parity bits. Eigenvectors may be employed to transmit each transmission packet over more than one channel with a power disparity between the channels. A transmitter according to the present invention is also described.

    摘要翻译： 用于发送N个输入比特的分组的方法包括将所有N比特全部编码为单个实体，例如在Turbo编码器内具有长度为N的交织器，输出M个编码比特，对M个比特进行信道交织， 位到并行的第一和第二部分，并且通过单独的信道发送它们以实现空间分集。 第一和第二部分的大小基于提供信道的一些知识的闭合反馈回路来确定，优选地是信道容量的度量。 反馈回路还可以向与每个发射天线相关联的子分组选择器提供信道知识，其确定该信道的适当速率并选择子分组以填充该信道的传输分组。 子分组选择器选择系统比特的子分组，并用奇偶校验位的子分组填充剩余的传输分组大小。 可以采用特征向量在多个信道上以每个信道之间的功率差异来传输每个传输分组。 还描述了根据本发明的发射机。