专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2011041930A1 基站、多天线通信系统及其中使用的通信方法审中-公开
公开(公告)号：WO2011041930A1
公开(公告)日：2011-04-14
申请号：PCT/CN2009/074375
申请日：2009-10-09
申请人：富士通株式会社 , 张元涛 , 吴建明 , 田军 , 周华
发明人：张元涛 , 吴建明 , 田军 , 周华
IPC分类号： H04W88/00
CPC分类号： H04L27/3488 , H04B7/0452 , H04L1/0003 , H04L1/0026 , H04L1/0031 , H04L1/0656

2. 发明申请

WO2010079387A1 EFFICIENT MIMO TRANSMISSION SCHEMES 审中-公开
标题翻译：有效的MIMO传输方案
公开(公告)号：WO2010079387A1
公开(公告)日：2010-07-15
申请号：PCT/IB2009/052726
申请日：2009-06-25
申请人： MARVELL WORLD TRADE LTD , PERETS, Yona , GOMADAM, Krishna Srikanth , ERELL, Adoram , YELLIN, Daniel , MELZER, Ezer
发明人： PERETS, Yona , GOMADAM, Krishna Srikanth , ERELL, Adoram , YELLIN, Daniel , MELZER, Ezer
IPC分类号： H04L27/00
CPC分类号： H04B7/0473 , H04L1/0009 , H04L1/0656 , H04L1/0675 , H04L5/0025
摘要： A method for communication includes, in a transmitter (20) having a first number of transmit antenna ports (52), setting an upper limit on a second number of spatial layers to be used by the transmitter to be less than the first number. An actual number of the spatial layers, which does not exceed the upper limit, is allocated for transmission to a given receiver. One or more streams of modulated symbols are mapped onto the allocated actual number of the spatial layers. The actual number of the spatial layers are transmitted from the transmitter to the given receiver.
摘要翻译：一种用于通信的方法包括：在具有第一数量的发射天线端口（52）的发射机（20）中，将发射机使用的第二数量的空间层的上限设置为小于第一数量。空间层的实际数量不超过上限，被分配用于传输给给定的接收机。调制符号的一个或多个流被映射到所分配的实际数量的空间层。空间层的实际数量从发射机发射到给定的接收机。

3. 发明申请

WO2010016719A2 METHODS AND APPARATUS TO GENERATE MULTIPLE ANTENNAS TRANSMIT PRECODING CODEBOOK 审中-公开
标题翻译：生成多个天线发射预编码的方法和装置
公开(公告)号：WO2010016719A2
公开(公告)日：2010-02-11
申请号：PCT/KR2009/004359
申请日：2009-08-04
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： KIM, Tae-Joon , ZHANG, Jianzhong , CLERCKX, Bruno
IPC分类号： H04B7/04 , H04L27/18
CPC分类号： H04B7/0617 , H04B7/0456 , H04B7/0478 , H04B7/0486 , H04L1/007 , H04L1/0656 , H04L25/03343
摘要： A device and method for generating a codebook. The device includes a generator. The codebook generator is configured to generate a precoding codebook using an 8-Phase Shift keying (PSK) alphabet-based 4 bits four transmitter (4 TX) and eight transmitter (8 TX) antennas for use in a closed-loop Single User-MIMO(SU-MIMO) scheme. According to aspects of the present disclosure, it is possible to generate a precoding codebook for use in 8 Transmission Antenna systems.
摘要翻译：一种生成码本的装置和方法。该装置包括发电机。码本生成器被配置为使用基于8相移键控（PSK）字母的4位四个发送器（4个TX）和8个发送器（8个TX）天线来生成预编码码本，用于闭环单用户MIMO （SU-MIMO）方案。根据本公开的方面，可以生成用于8个发送天线系统的预编码码本。

4. 发明申请

WO2009084207A1 データ送信装置、データ受信装置及び無線通信システム审中-公开
标题翻译：数据传输设备，数据接收设备和无线通信系统
公开(公告)号：WO2009084207A1
公开(公告)日：2009-07-09
申请号：PCT/JP2008/003970
申请日：2008-12-25
申请人：三菱電機株式会社 , 松本渉 , 内田繁 , 久世俊之 , 吉田英夫
发明人：松本渉 , 内田繁 , 久世俊之 , 吉田英夫
IPC分类号： H04J99/00 , H04B7/04 , H04L1/00 , H04L1/18 , H04J11/00
CPC分类号： H04L1/1812 , H04B7/0413 , H04L1/0656 , H04L1/1816
摘要：　データ受信装置２の誤り訂正復号部２６における符号語の誤り訂正復号が失敗である場合、データ送信装置１のＭＩＭＯ処理部１５が所定の規則にしたがって送信済みの符号語を変形して送信し、データ受信装置２の誤り訂正復号部２６が変形された符号語を用いて、データを再生する。これにより、ノイズだけでなく、干渉波成分を抑制して、復調及び誤り訂正復号の成功率を大きく改善することができる。
摘要翻译：当数据接收装置（2）的纠错解码部分（26）中的码字的纠错解码失败时，数据传输装置（1）的MIMO处理部分（15）转换并发送已发送的码字根据预定规则，数据接收装置（2）的纠错解码部分（26）使用经变换的码字来回放数据。不仅噪声，而且干扰波分量被抑制，从而可以显着提高解调和纠错解码的成功率。

5. 发明申请

WO2005043788A3 MULTIPLE-ANTENNA PARTIALLY COHERENT CONSTELLATIONS FOR MULTI-CARRIER SYSTEMS 审中-公开
标题翻译：多载波系统的多天线部分密切协商
公开(公告)号：WO2005043788A3
公开(公告)日：2009-04-02
申请号：PCT/IB2004003455
申请日：2004-10-21
申请人： NOKIA CORP , NOKIA INC , BORRAN MOHAMMED J , VARSHNEY PRABODH , LILLEBERG JORMA
发明人： BORRAN MOHAMMED J , VARSHNEY PRABODH , LILLEBERG JORMA
IPC分类号： H04K1/10 , H04L20060101
CPC分类号： H04L27/34 , H04L1/0625 , H04L1/0631 , H04L1/0656
摘要： A multi-level space time signal constellation that is optimized for use with a multi-carrier, multi-path communication scheme includes points on a first level separated from points on a mutually exclusive second level by a minimum distance that is based on a conditinal probability distribution, preferably a Kullback-Leiber (KL) distance. Points within one level may be separated by a Euclideam distance, byt spherical levels are rotated relative to one another to maximize a minimum inter-level KL distance. A receive uses pilot symbols to estimate the channels and two-stage symbol detection, determining in one stage the constellation level and in another stage the point in the level. The receiver calculates a likehood function based on a conditional distribution which does not reduce to the Euclidean-based nearest-neighbor detector. A single stored constellation may be scaled based on received signal to noise ratio.
摘要翻译：被优化用于多载波多路径通信方案的多级时空信号星座包括在相互排斥的第二级上与点隔开的第一级上的点与基于条件概率的最小距离分布，最好是Kullback-Leiber（KL）距离。一个级别内的点可以通过欧几里得距离分开，球面水平相对于彼此旋转，以使最小间距KL距离最大化。 A接收使用导频符号来估计信道和两级符号检测，在一个阶段中确定星座级别，并且在另一级中确定该级别中的点。接收器基于不减少到基于欧几里德的最近邻检测器的条件分布来计算相似度函数。可以基于接收到的信噪比来缩放单个存储的星座。

6. 发明申请

WO2008058112A3 MIMO TRANSMISSION WITH LAYER PERMUTATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中具有层传输的MIMO传输
公开(公告)号：WO2008058112A3
公开(公告)日：2008-12-11
申请号：PCT/US2007083739
申请日：2007-11-06
申请人： QUALCOMM INC , MALLADI DURGA PRASAD , KIM BYOUNG-HOON , YOO TAESANG
发明人： MALLADI DURGA PRASAD , KIM BYOUNG-HOON , YOO TAESANG
IPC分类号： H04B7/06 , H04B7/04 , H04L1/00 , H04L1/06
CPC分类号： H04B7/065 , H04B7/0417 , H04B7/0617 , H04B7/0628 , H04B7/0641 , H04L1/0026 , H04L1/0625 , H04L1/0656 , H04L1/1812
摘要： Techniques for supporting MIMO transmission with layer permutation are described. In one aspect, multiple codewords may be generated for transmission from multiple antennas (e.g., virtual antennas), with the number of codewords being less than the number of antennas. Each codeword may be mapped across the multiple antennas. Two codewords may be generated. For rank 3, the first codeword may be mapped to one layer (or one antenna on each subcarrier), and the second codeword may be mapped to two layers (or two antennas on each subcarrier). For rank 4, each codeword may be mapped to two layers. In another aspect, a base CQI indicative of an average signal quality may be determined. A delta CQI indicative of improvement over the average signal quality may also be determined. In yet another aspect, selection may be performed with different penalty factors for different ranks or number of codewords.
摘要翻译：描述了用于支持具有层置换的MIMO传输的技术。在一个方面，可以生成多个码字用于从多个天线（例如，虚拟天线）的发射，其中码字的数量小于天线的数量。每个码字可以跨多个天线映射。可以生成两个码字。对于秩3，第一码字可以映射到一个层（或每个子载波上的一个天线），并且第二码字可以映射到两个层（或每个子载波上的两个天线）。对于等级4，每个码字可以映射到两个层。另一方面，可以确定表示平均信号质量的基本CQI。也可以确定表示对平均信号质量的改善的增量CQI。在另一方面，可以针对不同等级或码字数量对不同的惩罚因素进行选择。

7. 发明申请

WO2008147138A1 METHOD OF TRANSMITTING AND RECEIVING A SIGNAL AND APPARATUS FOR TRANSMITTING AND RECEIV0ING A SIGNAL 审中-公开
标题翻译：发送和接收信号的方法和发送和接收信号的装置
公开(公告)号：WO2008147138A1
公开(公告)日：2008-12-04
申请号：PCT/KR2008/003054
申请日：2008-05-30
申请人： LG ELECTRONICS INC. , KO, Woo Suk , MOON, Sang Chul
发明人： KO, Woo Suk , MOON, Sang Chul
IPC分类号： H04N7/015
CPC分类号： H03M13/2906 , H03M13/1102 , H03M13/152 , H03M13/27 , H03M13/2707 , H04H20/33 , H04H60/07 , H04L1/0054 , H04L1/0065 , H04L1/0656
摘要： A method of transmitting/receiving a signal and an apparatus for transmitting/receiving a signal are disclosed. More particularly, a method of transmitting/receiving a signal and an apparatus for transmitting/receiving a signal, which are capable of increasing a data transfer rate, are disclosed. It is possible to arrange symbols according to an optimal symbol mapping method such that gaps between neighboring symbols are equalized, modulate the symbols, and transmit the modulated symbols. Accordingly, it is possible to improve the data transfer rate on the basis of a SNR gain and improve signal transmission/reception performance of a transmitting/receiving system.
摘要翻译：公开了发送/接收信号的方法以及发送/接收信号的装置。更具体地，公开了一种发送/接收信号的方法以及用于发送/接收信号的装置，其能够增加数据传输速率。可以根据最佳符号映射方法排列符号，使相邻符号之间的间隙相等，调制符号并发送调制符号。因此，可以基于SNR增益提高数据传输速率，并且提高发送/接收系统的信号发送/接收性能。

8. 发明申请

WO2008024816A1 SYSTEMS AND METHODS FOR PROVIDING CHANNEL QUALITY FEEDBACK FOR DOWNLINK MIMO TRANSMISSION ADJUSTMENT 审中-公开
标题翻译：提供用于下行链路MIMO传输调整的信道质量反馈的系统和方法
公开(公告)号：WO2008024816A1
公开(公告)日：2008-02-28
申请号：PCT/US2007/076480
申请日：2007-08-22
申请人： QUALCOMM Incorporated , KIM, Byoung-hoon
发明人： KIM, Byoung-hoon
IPC分类号： H04L1/00 , H04L1/06
CPC分类号： H04B7/0417 , H04B7/04 , H04B7/0632 , H04L1/0026 , H04L1/06 , H04L1/0656 , H04L1/0675
摘要： Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.
摘要翻译：通过减少为在下行链路MIMO信道上调整数据速率而提供信道性能反馈所需的上行链路资源的量来改善MIMO无线通信系统的性能的系统和方法。在一个实施例中，一种方法包括根据对应的数据速率对一组数据流中的每一个进行编码，根据组合的全部排列来置换一组MIMO信道上的数据流，发送置换的数据流，接收置换的数据流解码和确定每个数据流的SNR，计算所述数据流集合的精简SNR度量，提供所述精简度量作为反馈，基于所述精简SNR度量确定所述数据流的各个SNR度量的集合，以及基于各个SNR度量来调整数据流被编码的数据速率。

9. 发明申请

WO2007065272A1 RESOURCE ASSIGNMENT SYSTEMS AND METHODS 审中-公开
标题翻译：资源转让制度和方法
公开(公告)号：WO2007065272A1
公开(公告)日：2007-06-14
申请号：PCT/CA2006/002007
申请日：2006-12-08
申请人： NORTEL NETWORKS LIMITED , ZHANG, Hang , BALIGH, Mohammadhadi , FONG, Mo-Han , YU, Dongsheng , VRZIC, Sophie , LI, Jun , TONG, Wen , DODD, Curt
发明人： ZHANG, Hang , BALIGH, Mohammadhadi , FONG, Mo-Han , YU, Dongsheng , VRZIC, Sophie , LI, Jun , TONG, Wen , DODD, Curt
IPC分类号： H04Q7/36 , H04Q7/30 , H04Q7/32 , H04Q7/38
CPC分类号： H04W72/1263 , H04L1/0016 , H04L1/0041 , H04L1/0045 , H04L1/0656 , H04L1/1812 , H04L1/1825 , H04L1/1887 , H04L1/1896 , H04L5/0092 , H04W28/04 , H04W72/04 , H04W72/042 , H04W72/06 , H04W72/1278
摘要： In a wireless communication system, a base station assigns resources to mobile stations using indices. Each index is associated with an assignment schedule for assigning resources. Once the base station determines an assignment schedule to assign particular resources, it encodes the schedule into an index and transmits it. Λ mobile station receives the index and decodes it to recover the assignment schedule. Both the base station and the mobile station may use look-up tables and/or algorithms for storing or generating indices associated with assignment schedules. To assign resources so as to indicate transmission characteristics over the resources, the base station transmits assignment blocks. Each assignment block indicates original transmission, retransmission, persistent assignment, non-persistent assignment, HARQ signaling, RAS- HARQ signaling, DRCH assignment, and/or LRCH assignment.
摘要翻译：在无线通信系统中，基站使用索引向移动台分配资源。每个索引与用于分配资源的分配调度相关联。一旦基站确定了分配调度表来分配特定的资源，它将该进度编码成一个索引并发送它。？移动台接收索引并对其进行解码以恢复分配时间表。基站和移动台都可以使用查找表和/或算法来存储或生成与分配计划相关联的索引。为了分配资源以指示资源上的传输特性，基站发送分配块。每个分配块指示原始传输，重传，持续分配，非持续分配，HARQ信令，RAS-HARQ信令，DRCH分配和/或LRCH分配。

10. 发明申请

WO2006138203A1 TRANSMIT SPATIAL DIVERSITY FOR CELLULAR SINGLE FREQUENCY NETWORKS 审中-公开
标题翻译：用于细胞单频网络的传输空间多样性
公开(公告)号：WO2006138203A1
公开(公告)日：2006-12-28
申请号：PCT/US2006/022725
申请日：2006-06-09
申请人： QUALCOMM Incorporated , MALLADI, Durga Prasad
发明人： MALLADI, Durga Prasad
IPC分类号： H04B7/02 , H04B7/04 , H04B7/06 , H04B7/08
CPC分类号： H04B7/022 , H04B7/0491 , H04B7/0667 , H04B7/0691 , H04B7/0848 , H04L1/0002 , H04L1/0625 , H04L1/0656 , H04L27/3488
摘要： Multiple-In Multiple-Out (MIMO) techniques are used to increase spectral efficiency of a cellular single frequency network. In some embodiments with single transmit antenna per cell, multiple data streams are transmitted from multiple cells, one data stream per set of transmit antennae. The mapping of streams to antenna sets is permuted in time. In this way, user equipment devices (UEs) at cell edges benefit from MIMO, and UEs near cell centers benefit from high carrier-to-interference (C/I) ratio of the signal. In some embodiments, each stream is concurrently transmitted on base layer of a hierarchically modulated signal from one set, and on enhancement layer of a hierarchically modulated signal from another set. The mapping of sets to streams is permuted in time. The UEs at cell edges benefit from MIMO, and the UEs near cell centers benefit from the high C/I to decode both streams from the base and enhancement layers.
摘要翻译：多输入多输出（MIMO）技术用于提高蜂窝单频网络的频谱效率。在每个小区具有单个发射天线的一些实施例中，从多个小区发送多个数据流，每组发射天线一个数据流。流到天线组的映射在时间上被置换。以这种方式，小区边缘处的用户设备设备（UE）受益于MIMO，并且小区中心附近的UE受益于信号的高载波干扰（C / I）比。在一些实施例中，每个流在来自一组的分层调制信号的基本层上以及来自另一组的分层调制信号的增强层上同时发送。集合到流的映射在时间上被置换。小区边缘的UE受益于MIMO，并且小区中心附近的UE受益于高C / I以对来自基础层和增强层的两个流进行解码。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式