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    • 1. 发明申请
    • CHANNEL INFORMATION FEEDBACK REDUCTION IN COMMUNICATION NETWORK
    • 通信信息反馈减少通信网络
    • US20120196607A1
    • 2012-08-02
    • US13017304
    • 2011-01-31
    • Dragan SamardzijaTheodore SizerReinaldo A. Valenzuela
    • Dragan SamardzijaTheodore SizerReinaldo A. Valenzuela
    • H04W72/04
    • H04J11/0053H04B7/024H04B7/0626H04B7/0658H04L5/0035H04L5/0039
    • Techniques are disclosed for reducing channel information feedback in communication networks. For example, a method comprises the following steps. A set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network are identified. One or more unique downlink communication resource blocks are assigned to each designated mobile terminal that is located in a given first sector of a designated base station. As such, each designated mobile terminal in the first sector of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations.
    • 公开了用于减少通信网络中的信道信息反馈的技术。 例如,一种方法包括以下步骤。 识别一组移动终端和指定为参与通信网络中的协调多点传输协议的一组基站。 一个或多个唯一的下行链路通信资源块被分配给位于指定基站的给定第一扇区中的每个指定的移动终端。 这样,指定基站的第一扇区中的每个指定的移动终端:(i)响应于从分配给该基站的一个或多个唯一下行链路通信资源块中从指定的基站接收到的相应信号来执行信道状态估计处理 指定移动终端; 和(ii)将所生成的信道状态信息发送回指定的基站中的至少一个。
    • 2. 发明授权
    • Channel information feedback reduction in communication network
    • 通信信息反馈减少通信网络
    • US08965389B2
    • 2015-02-24
    • US13017304
    • 2011-01-31
    • Dragan SamardzijaTheodore SizerReinaldo A. Valenzuela
    • Dragan SamardzijaTheodore SizerReinaldo A. Valenzuela
    • H04W72/00H04J11/00H04L5/00H04B7/02H04B7/06
    • H04J11/0053H04B7/024H04B7/0626H04B7/0658H04L5/0035H04L5/0039
    • Techniques are disclosed for reducing channel information feedback in communication networks. For example, a method comprises the following steps. A set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network are identified. One or more unique downlink communication resource blocks are assigned to each designated mobile terminal that is located in a given first sector of a designated base station. As such, each designated mobile terminal in the first sector of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations.
    • 公开了用于减少通信网络中的信道信息反馈的技术。 例如,一种方法包括以下步骤。 识别一组移动终端和指定为参与通信网络中的协调多点传输协议的一组基站。 一个或多个唯一的下行链路通信资源块被分配给位于指定基站的给定第一扇区中的每个指定的移动终端。 这样,指定基站的第一扇区中的每个指定的移动终端:(i)响应于从分配给该基站的一个或多个唯一下行链路通信资源块中从指定的基站接收到的相应信号来执行信道状态估计处理 指定移动终端; 和(ii)将所生成的信道状态信息发送回指定的基站中的至少一个。
    • 7. 发明授权
    • Method and system employing antenna arrays
    • 采用天线阵列的方法和系统
    • US07421039B2
    • 2008-09-02
    • US10160126
    • 2002-06-04
    • Laurence Eugene MalaenderReinaldo A. Valenzuela
    • Laurence Eugene MalaenderReinaldo A. Valenzuela
    • H04L27/12H04L7/02
    • H04B7/0413H04L1/0001H04W52/26H04W52/42
    • In the method and system, a transmitter demultiplexes an input data stream into M substreams, where each of the M substreams have a data rate lower than a data rate of the input data stream. The substreams are transmitted as signals from a transmit array of M antennas to be received by a receiver array at a receiver in the system, based on a set of transmission parameters. The transmitter adjusts at least one of the transmission parameters based on a condition experienced by the receiver so as to increase data throughput in the system. The adjustable parameters include the number of antennas to employ, the on/off patterns for the antennas, and eigenmode values for the antennas used in order to determine transmit power. Accordingly, system data throughput may be improved while maintaining transmit power and system bandwidth constant.
    • 在该方法和系统中,发射机将输入数据流解复用为M个子流,其中每个M个子流具有低于输入数据流的数据速率的数据速率。 基于一组传输参数,子流作为来自M个天线的发射阵列的信号被传输以由系统中的接收机处的接收器阵列接收。 发射机根据接收机所经历的状况来调整传输参数中的至少一个,以增加系统中的数据吞吐量。 可调节的参数包括要使用的天线数量,天线的开/关模式以及用于确定发射功率的天线的本征模式值。 因此,可以在维持发射功率和系统带宽恒定的同时提高系统数据吞吐量。
    • 10. 发明授权
    • Space-time processing for multiple-input, multiple-output, wireless systems
    • 多输入多输出无线系统的时空处理
    • US06888809B1
    • 2005-05-03
    • US09482429
    • 2000-01-13
    • Gerard Joseph FoschiniAngel LozanoFarrokh Rashid-FarrokhiReinaldo A. Valenzuela
    • Gerard Joseph FoschiniAngel LozanoFarrokh Rashid-FarrokhiReinaldo A. Valenzuela
    • H04J3/00H04B1/04H04B1/10H04B1/18H04B7/06H04B7/08H04Q7/00
    • H04B7/0634H04B7/0626
    • In a MIMO system the signals transmitted from the various antennas are processed so as to improve the ability of the receiver to extract them from the received signal even in the face of some correlation. More specifically the number of bit streams that is transmitted simultaneously is adjusted, e.g., reduced, depending on the level of correlation, while multiple versions of each bit stream, variously weighted, are transmitted simultaneously. The variously weighted versions are combined to produced one combined weighted signal. The receiver processes the received signals in the same manner as it would have had all the signals reaching the receive antennas been uncorrelated. The weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link which are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link or the weight vectors may be determined by the forward channel transmitter using the channel properties of the forward link and the determined weight vectors are made known to the transmitter of the forward link by being transmitted from the receiver of the forward link by the transmitter of the reverse link. The channel properties used to determine the weight vectors may include the channel response from the transmitter to the receiver and the covariance matrix of noise and interference measured at the receiver.
    • 在MIMO系统中,处理从各种天线发送的信号,以便即使面对一些相关性,也可以提高接收机从接收信号中提取它们的能力。 更具体地,根据相关级别来调整,例如减少同时传输的比特流的数量,同时传输各种加密的每个比特流的多个版本。 将各种加权版本组合以产生一个组合加权信号。 接收机以与所有到达接收天线的所有信号不相关的相同方式处理接收到的信号。 加权向量可以由正向信道发射机使用正向链路的信道属性来确定,前向链路的信道属性是由前向链路的发射机通过反向链路的发射机从前向链路的接收机发送的, 向量可以由正向信道发射机使用前向链路的信道特性来确定,所确定的权重向量通过从反向链路的发射机从前向链路的接收机发送到前向链路的发射机。 用于确定权重向量的信道属性可以包括从发射机到接收机的信道响应以及在接收机处测量的噪声和干扰的协方差矩阵。