シンボル負荷による過酷な干渉の効果を低減するためのOFDM送信機および方法
    4.
    发明专利
    シンボル負荷による過酷な干渉の効果を低減するためのOFDM送信機および方法 有权
    OFDM发射机和减少严重干扰对符号加载的影响的方法

    公开(公告)号:JP2015046888A

    公开(公告)日:2015-03-12

    申请号:JP2014198659

    申请日:2014-09-29

    Abstract: 【課題】シンボル・ローディングによって、OFDMシステム内における複数のサブキャリア上での干渉の効果低減を提供する。【解決手段】複数の異なる信号ディメンジョンへ写像された2つ以上の入力データシンボルのグループに対して線形変換が実行され、対応する2つ以上の出力データシンボルが生成される。出力データシンボルの各々は増加した個数の信号点配置を有する。出力データシンボルの各々は、複数の異なる信号ディメンジョンのいずれか一つにおける伝送のために送信設定される。線形変換は、2つ以上の出力データシンボルの各々が、グループ内の入力データシンボルに関する情報を担うように設定される。互いに異なる信号ディメンジョンに写像された複数の入力データシンボルをこのように一緒に符号化することで、フェージングと過酷な干渉に対して改善された信頼性が得られる。【選択図】図1

    Abstract translation: 要解决的问题:通过符号加载来减少OFDM系统中干扰对子载波的影响。解决方案:对映射到不同信号维度的两个或更多个输入数据符号的一组执行线性变换,以生成相应的两个 或更多的输出数据符号。 每个输出数据符号具有增加的星座点数。 每个输出数据符号被配置为在不同信号尺寸之一内传输。 线性变换被配置为使得两个或更多个输出数据符号中的每一个携带组中的每个输入数据符号的信息。 将映射到不同信号尺寸的输入数据符号进行编码可以提供改善的抗衰落和严重干扰的可靠性。

    Downlink channel parameters determination for mimo system
    6.
    发明专利
    Downlink channel parameters determination for mimo system 有权
    下行链路信道MIMO系统的参数确定

    公开(公告)号:JP2014195306A

    公开(公告)日:2014-10-09

    申请号:JP2014104931

    申请日:2014-05-21

    Abstract: PROBLEM TO BE SOLVED: To provide methods and apparatus of determining downlink channel parameters for a MIMO system.SOLUTION: Embodiments of methods and apparatus for providing downlink channel parameters determination for downlink channels associated with a MIMO system are described. A method comprising: collecting, by a transmitter station, information associated with one or more uplink channels of a MIMO system employed to communicate with at least one receiver station; computing channel quality information for a plurality of downlink channels based at least in part on the information associated with the one or more uplink channels; and determining one or more downlink channel parameters for use by the transmitter station to transmit signals to the at least one receiver station, via one or more of the downlink channels, based at least in part on the channel quality information. Other embodiments are also described.

    Abstract translation: 要解决的问题:提供确定MIMO系统的下行链路信道参数的方法和装置。描述了用于为与MIMO系统相关联的下行链路信道提供下行链路信道参数确定的方法和装置的实施例。 一种方法,包括:由发射机站收集与用于与至少一个接收机站通信的MIMO系统的一个或多个上行链路信道相关联的信息; 至少部分地基于与所述一个或多个上行链路信道相关联的信息来计算多个下行链路信道的信道质量信息; 以及确定一个或多个下行链路信道参数,以由所述发射机站至少部分地基于信道质量信息经由一个或多个下行链路信道向所述至少一个接收机站发送信号。 还描述了其它实施例。

    Bidirectional iterative beam formation
    7.
    发明专利
    Bidirectional iterative beam formation 有权
    双向迭代波束形成

    公开(公告)号:JP2013168988A

    公开(公告)日:2013-08-29

    申请号:JP2013086607

    申请日:2013-04-17

    CPC classification number: H04W72/046 H01Q3/26 H04B7/0617 H04B7/0632 H04B7/0682

    Abstract: PROBLEM TO BE SOLVED: To provide an enhanced bidirectional beam forming protocol to perform bidirectional beam forming operations to reduce training overhead and link latency during beam forming operations.SOLUTION: A wireless device has an antenna control module operative to initiate beam formation operations using an iterative training scheme to form a set of communications channels for a wireless network. The antenna control module transmits training signals and feedback information to a peer device via a transceiver and a phased antenna array using partially or fully formed high rate channels, and iteratively determines antenna-array weight vectors for a directional transmit beam pattern for the phased antenna array using feedback information from the peer device.

    Abstract translation: 要解决的问题:提供增强的双向波束形成协议以执行双向波束形成操作以减少波束形成操作期间的训练开销和链路等待时间。解决方案:无线设备具有天线控制模块,用于使用迭代来启动波束形成操作 培训方案,形成无线网络的一组通信渠道。 天线控制模块经由收发机和使用部分或完全形成的高速率信道的相控天线阵列将训练信号和反馈信息发送到对等设备,并且迭代地确定用于相控天线阵列的定向发射波束图案的天线阵列权重向量 使用对等设备的反馈信息。

    Bandwidth allocation base station and method for allocating uplink bandwidth using sdma
    8.
    发明专利
    Bandwidth allocation base station and method for allocating uplink bandwidth using sdma 有权
    使用SDMA分配上行带宽的带宽分配基站和方法

    公开(公告)号:JP2013013132A

    公开(公告)日:2013-01-17

    申请号:JP2012190926

    申请日:2012-08-31

    Abstract: PROBLEM TO BE SOLVED: To reduce the amount of overhead for bandwidth requests, and reduce increase in the latency caused by collisions of simultaneously submitted bandwidth requests.SOLUTION: Uplink bandwidth request messages are received on a bandwidth request contention channel from one or more subscriber stations. The uplink bandwidth request messages are generated by the subscriber stations by modulating pilot subcarriers of a randomly selected disjoint pilot pattern with a selected orthogonal sequence. The base station allocates uplink bandwidth to the subscriber stations when the uplink bandwidth request messages are successfully detected and decoded. The base station uses an SDMA technique to determine channel responses based on the orthogonal sequences to detect and decode the uplink bandwidth request messages.

    Abstract translation: 要解决的问题:减少带宽请求的开销量,并减少由同时提交的带宽请求的冲突引起的延迟增加。 解决方案:在一个或多个用户站的带宽请求争用信道上接收上行链路带宽请求消息。 上行链路带宽请求消息由用户站通过用所选择的正交序列调制随机选择的不相交导频模式的导频子载波来生成。 当上行链路带宽请求消息成功检测和解码时,基站向用户站分配上行带宽。 基站使用SDMA技术来确定基于正交序列的信道响应以检测和解码上行链路带宽请求消息。 版权所有(C)2013,JPO&INPIT

    Reducing co-channel interference
    9.
    发明专利
    Reducing co-channel interference 审中-公开
    减少共通道干扰

    公开(公告)号:JP2014112858A

    公开(公告)日:2014-06-19

    申请号:JP2013268942

    申请日:2013-12-26

    CPC classification number: H04W52/243 H04B17/345 H04W52/143 H04W52/36

    Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing co-channel interference by exploiting multiple base station transmit cooperation (MBSC) and single base station transmit nulling (SBSN).SOLUTION: Base stations (BS1 to BS3) may transmit at varied power levels. Subscriber stations A receiving the power levels can transmit noise information back to the base station. As a result, co-channel interference can be determined from the varied power transmissions, either in the base station or in the subscriber station. In addition, in some embodiments, the transmissions may include different phases so that the phase of the co-channel interference may be determined as well.

    Abstract translation: 要解决的问题:提供一种通过利用多基站发射协作(MBSC)和单基站发射归零(SBSN)来减少同信道干扰的方法。解决方案:基站(BS1至BS3)可以以不同的功率电平 。 接收功率电平的用户站A可将噪声信息发送回基站。 结果,可以在基站或用户台中的不同功率传输来确定同信道干扰。 此外,在一些实施例中,传输可以包括不同的相位,使得同信道干扰的相位也可以被确定。

    Downlink channel parameters determination for mimo system
    10.
    发明专利
    Downlink channel parameters determination for mimo system 有权
    下行链路信道MIMO系统的参数确定

    公开(公告)号:JP2013048441A

    公开(公告)日:2013-03-07

    申请号:JP2012210604

    申请日:2012-09-25

    Abstract: PROBLEM TO BE SOLVED: To provide methods and apparatus of determining downlink channel parameters for a MIMO system.SOLUTION: Embodiments of methods and apparatus for providing downlink channel parameters determination for downlink channels associated with a MIMO system are described. A method comprising: collecting, by a transmitter station, information associated with one or more uplink channels of a MIMO system employed to communicate with at least one receiver station; computing channel quality information for a plurality of downlink channels based at least in part on the information associated with the one or more uplink channels; and determining one or more downlink channel parameters for use by the transmitter station to transmit signals to the at least one receiver station, via one or more of the downlink channels, based at least in part on the channel quality information. Other embodiments are also described.

    Abstract translation: 要解决的问题:提供确定MIMO系统的下行链路信道参数的方法和装置。 以下描述了与MIMO系统相关联的下行链路信道提供下行链路信道参数确定的方法和装置的实施例。 一种方法,包括:由发射机站收集与用于与至少一个接收机站通信的MIMO系统的一个或多个上行链路信道相关联的信息; 至少部分地基于与所述一个或多个上行链路信道相关联的信息来计算多个下行链路信道的信道质量信息; 以及确定一个或多个下行链路信道参数,以由所述发射机站至少部分地基于信道质量信息,经由一个或多个下行链路信道向所述至少一个接收机站发送信号。 还描述了其它实施例。 版权所有(C)2013,JPO&INPIT

Patent Agency Ranking