System and method for multiple input, multiple output (MIMO) communications
    21.
    发明授权
    System and method for multiple input, multiple output (MIMO) communications 有权
    多输入多输出(MIMO)通信的系统和方法

    公开(公告)号:US08365032B2

    公开(公告)日:2013-01-29

    申请号:US12624264

    申请日:2009-11-23

    IPC分类号: G06F11/00

    摘要: A system and method for MIMO communications is provided. A method includes receiving a data block of P matrices from a transmitter, and determining if operating conditions are met. The method also includes if operating conditions are not met, computing a test position, selecting a codeword based on the test position, and computing a metric. The metric may then be compared with an error radius to determine a validity of the codeword. If the codeword is invalid, another codeword is selected. If the codeword is valid, then the codeword is stored if all matrices have been evaluated, else another matrix is selected for evaluation. If matrices earlier in the data block have untested codewords while all codewords for a matrix being evaluated have been tested, backtracking may be performed. After the codewords for the data block have been found, the stored data may be outputted and processed.

    摘要翻译: 提供了一种用于MIMO通信的系统和方法。 一种方法包括从发射机接收P个矩阵的数据块,并确定是否满足操作条件。 该方法还包括如果不满足操作条件,计算测试位置,基于测试位置选择码字,以及计算度量。 然后可以将度量与误差半径进行比较以确定码字的有效性。 如果码字无效,则选择另一码字。 如果码字有效,则如果已经估计了所有矩阵,则存储码字,否则选择另一个矩阵用于评估。 如果数据块中较早的矩阵具有未测试的码字,而所有被评估的矩阵的码字都已被测试,则可以进行回溯。 在找到数据块的码字之后,可以输出和处理所存储的数据。

    Apparatus and method for channel estimation using training signals with reduced signal overhead
    22.
    发明授权
    Apparatus and method for channel estimation using training signals with reduced signal overhead 失效
    使用具有降低的信号开销的训练信号进行信道估计的装置和方法

    公开(公告)号:US08340232B2

    公开(公告)日:2012-12-25

    申请号:US11297879

    申请日:2005-12-09

    IPC分类号: H04B7/10 H04L1/02

    摘要: A base station comprising an antenna array including M antennas for transmitting data to a plurality of subscriber stations. The base station generates a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence and generates a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence. The second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence. The first pilot signal preamble is transmitted from a first antenna and the second pilot signal preamble is transmitted from a second antenna concurrently with transmission of the first preamble.

    摘要翻译: 一种基站,包括:天线阵列,包括用于向多个用户站发送数据的M个天线。 基站通过将第一循环前缀添加到第一导频信号序列来产生第一导频信号前导,并通过将第二循环前缀加到第二导频信号序列来产生第二导频信号前导码。 第二导频信号序列是第一导频信号序列的循环移位拷贝。 从第一天线发送第一导频信号前同步码,并且与第一前同步码的发送同时从第二天线发送第二导频信号前导码。

    Apparatus and method for canceling interference in a single antenna 1xEV-DV base station
    24.
    发明授权
    Apparatus and method for canceling interference in a single antenna 1xEV-DV base station 失效
    用于消除单个天线1xEV-DV基站中的干扰的装置和方法

    公开(公告)号:US08000654B2

    公开(公告)日:2011-08-16

    申请号:US11047309

    申请日:2005-01-31

    IPC分类号: H04B1/00

    CPC分类号: H04B1/71075

    摘要: A wireless network base station capable of canceling interference caused by a dominant interferer signal from a mobile station. The base station comprises down-converts an RF to a down-converted signal, r(n). K complex PN demodulators multiply the down-converted complex r(n) signal by PN code sequences associated with each of the K mobile stations to produce K chip streams. K Walsh code demodulators multiply each of the K chip streams by a Walsh code associated with a mobile stations to produce K raw user signals. K subtractors subtract a first estimated interference signal associated with the dominant interferer signal from the K raw user signals to produce K estimated user signals. A detector receives the K estimated user signals and produces a detected user signal for each of the mobile stations. An interference estimator then determines which detected user signal is the dominant interferer signal.

    摘要翻译: 一种无线网络基站,能够消除由来自移动台的显着干扰信号引起的干扰。 基站包括将RF下变频为下变频信号r(n)。 K个复合PN解调器将下变频复合r(n)信号乘以与每个K个移动站相关联的PN码序列,以产生K个码片流。 K沃尔什码解调器通过与移动站相关联的沃尔什码将K个码片流中的每一个乘以产生K个原始用户信号。 K个减法器从K个原始用户信号中减去与主要干扰信号相关联的第一估计干扰信号,以产生K个估计的用户信号。 检测器接收K个估计的用户信号,并为每个移动站产生检测到的用户信号。 然后,干扰估计器确定哪个检测到的用户信号是主要干扰信号。

    Method and system for managing channels in a wireless communication system
    25.
    发明授权
    Method and system for managing channels in a wireless communication system 有权
    用于管理无线通信系统中的信道的方法和系统

    公开(公告)号:US07920511B2

    公开(公告)日:2011-04-05

    申请号:US11804926

    申请日:2007-05-21

    IPC分类号: H04W4/00

    CPC分类号: H04L1/0026

    摘要: A method of managing channels in a wireless communication system is provided. The method includes generating channel quality feedback comprising a maximum channel quality indicator (CQI) and a delta-CQI value at a subscriber station and transmitting the channel quality feedback to a base station.

    摘要翻译: 提供了一种在无线通信系统中管理信道的方法。 该方法包括在订户站处生成包括最大信道质量指示符(CQI)和增量CQI值的信道质量反馈,并将信道质量反馈发送到基站。

    Apparatus and method for channel estimation without signaling overhead
    27.
    发明申请
    Apparatus and method for channel estimation without signaling overhead 有权
    没有信令开销的信道估计的装置和方法

    公开(公告)号:US20070135166A1

    公开(公告)日:2007-06-14

    申请号:US11297878

    申请日:2005-12-09

    IPC分类号: H04B1/38 H04M1/00

    摘要: A base station is disclosed for communicating with a subscriber station in a wireless network without requiring training signaling overhead. The base station is capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and data symbol to the subscriber station. A power level of the pilot signal is below a power level of the data symbol. The base station may be a single-input, single-output (SISO) antenna system or a multiple-input, multiple-output (MIMO) antenna system.

    摘要翻译: 公开了一种用于在无线网络中与用户台通信而不需要训练信令开销的基站。 基站能够将导频信号与数据符号组合,并将组合的导频信号和数据符号发送给用户台。 导频信号的功率电平低于数据符号的功率电平。 基站可以是单输入单输出(SISO)天线系统或多输入多输出(MIMO)天线系统。

    Apparatus and method for downlink scheduling in a SDMA-enabled OFDMA wireless network
    28.
    发明申请
    Apparatus and method for downlink scheduling in a SDMA-enabled OFDMA wireless network 失效
    在启用SDMA的OFDMA无线网络中进行下行链路调度的装置和方法

    公开(公告)号:US20060164972A1

    公开(公告)日:2006-07-27

    申请号:US11267738

    申请日:2005-11-04

    IPC分类号: H04J11/00

    摘要: A scheduler for scheduling downlink transmissions of orthogonal frequency division multiple access (OFDMA) signals using spatially directed beams to a plurality of subscriber stations in a wireless network. The scheduler schedules the downlink transmissions as a function of frequency, time, and space. The scheduler further schedules downlink transmissions to a first subscriber station based on a first null space associated with at least one subscriber station previously scheduled to receive.

    摘要翻译: 一种调度器,用于使用空间定向波束来调度无线网络中的多个用户台的正交频分多址(OFDMA)信号的下行链路传输。 调度器根据频率,时间和空间调度下行链路传输。 调度器基于与先前调度为接收的至少一个用户站相关联的第一零空间来进一步调度到第一用户站的下行链路传输。

    Apparatus and method for optimal power allocation between data and voice in a 1xEV-DV wireless network
    29.
    发明申请
    Apparatus and method for optimal power allocation between data and voice in a 1xEV-DV wireless network 失效
    用于在1xEV-DV无线网络中数据和语音之间的最佳功率分配的装置和方法

    公开(公告)号:US20060135194A1

    公开(公告)日:2006-06-22

    申请号:US11019756

    申请日:2004-12-21

    IPC分类号: H04Q7/20

    CPC分类号: H04W52/223 H04W52/346

    摘要: A base station for use in a 1xEV-DV wireless network comprising: 1) a radio frequency (RF) transceiver for transmitting to mobile stations in voice traffic channels and in at least one packet data channel and 2) a power allocation controller for adjusting the total transmit power allocated to the voice traffic channels and the at least one packet data channel in response to changing conditions in the 1xEV-DV wireless network. The power allocation controller monitors and detects trends in the traffic channel transmit power requirements of the voice-user mobile stations and adjusts the total transmit power according to the detected trend.

    摘要翻译: 一种用于1xEV-DV无线网络的基站,包括:1)射频(RF)收发信机,用于在语音业务信道和至少一个分组数据信道中向移动台发送; 2)功率分配控制器,用于调整 响应于1xEV-DV无线网络中的变化条件,分配给语音业务信道和至少一个分组数据信道的总发射功率。 功率分配控制器监测和检测语音用户移动台的业务信道发射功率需求的趋势,并根据检测到的趋势调整总发射功率。

    Apparatus and method for controlling auxiliary pilot channel in a CDMA2000 wireless network
    30.
    发明申请
    Apparatus and method for controlling auxiliary pilot channel in a CDMA2000 wireless network 有权
    用于控制CDMA2000无线网络中的辅助导频信道的装置和方法

    公开(公告)号:US20050136936A1

    公开(公告)日:2005-06-23

    申请号:US10987741

    申请日:2004-11-12

    IPC分类号: H04W88/08 H04W88/12 H04Q7/20

    CPC分类号: H04W88/08 H04W88/12

    摘要: A base station for use in a wireless network capable of communicating with a plurality of mobile stations in a coverage area of the wireless network. The base station comprises a controller for controlling use of an Auxiliary Pilot channel. The controller causes the base station to i) terminate use of the Auxiliary Pilot channel in a first mode, ii) transmit data traffic to a first mobile station using the Auxiliary Pilot channel in a second mode, and iii) transmit data traffic to the first mobile station using a traffic channel phase-matched to a wide sector pilot channel signal in a third mode.

    摘要翻译: 一种用于能够与无线网络的覆盖区域中的多个移动站进行通信的无线网络中的基站。 基站包括用于控制辅助导频信道的使用的控制器。 控制器使得基站i在第一模式中终止对辅助导频信道的使用,ii)使用第二模式中的辅助导频信道向第一移动台发送数据业务,以及iii)将数据业务发送到第一模式 在第三模式中使用与宽扇区导频信道相位匹配的业务信道的移动台。