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

WO2009108583A3 TREE POSITION ADAPTIVE SOFT OUTPUT M-ALGORITHM RECEIVER STRUCTURES 审中-公开
标题翻译：树位置自适应软输出M算法接收器结构
公开(公告)号：WO2009108583A3
公开(公告)日：2010-03-25
申请号：PCT/US2009034758
申请日：2009-02-20
申请人： NTT DOCOMO INC , BURSALIOGLU OZGUN , PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
发明人： BURSALIOGLU OZGUN , PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
IPC分类号： H04L25/03
CPC分类号： H04L25/03203 , H04L1/005 , H04L1/0059 , H04L1/0071 , H04L1/0631 , H04L1/0656 , H04L25/0204 , H04L25/03171 , H04L25/03216 , H04L25/03318 , H04L27/2647 , H04L2025/03426
摘要： A method and apparatus for tree position adaptive SOMA receiver structures are disclosed herein. In one embodiment, a device for use in a wireless communication system comprises a receiver to receive information-bearing signals from the transmitter wirelessly transmitted using OFDM and bit interleaved coded modulation, where the receiver includes an inner decoder structure having a soft output M-algorithm (SOMA) based multiple-in multiple-out (MIMO) joint demapper that uses a SOMA-based MIMO detection process to perform joint inner demapping over each tone, and wherein the SOMA-based MIMO joint demapper is operable to search a detection tree for each tone using a tree-search symbol order that is adapted for each tone based on channel state information and extrinsic information from the outer decoder, where only a number of best alternatives from every level of the tree are expanded.
摘要翻译：本文公开了一种用于树位置自适应SOMA接收机结构的方法和装置。在一个实施例中，用于无线通信系统的设备包括接收机，用于从使用OFDM和比特交织编码调制器无线发射的发射机接收信息承载信号，其中接收机包括具有软输出M算法的内部解码器结构（SOMA）的多输入多输出（MIMO）联合解映射器，其使用基于SOMA的MIMO检测处理来对每个音调执行联合内部解映射，并且其中基于SOMA的MIMO联合解映射器可操作以搜索检测树每个音调使用根据来自外部解码器的信道状态信息和外部信息适合于每个音调的树形搜索符号顺序，其中只有树的每个级别的最佳替代方案被扩展。

2. 发明申请

WO2009149113A3 SOFT OUTPUT M-ALGORITHM RECEIVER STRUCTURES WITH GENERALIZED SURVIVOR SELECTION CRITERIA FOR MIMO SYSTEMS 审中-公开
标题翻译：用于MIMO系统的具有通用选择标准的软输出M算法接收机结构
公开(公告)号：WO2009149113A3
公开(公告)日：2010-01-28
申请号：PCT/US2009046014
申请日：2009-06-02
申请人： NTT DOCOMO INC , PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
发明人： PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
IPC分类号： H04L25/03 , H03M13/39 , H04L1/00 , H04L1/06 , H04L25/02
CPC分类号： H04L25/03216 , H04L1/0055 , H04L1/0618 , H04L25/0204 , H04L25/0246 , H04L25/03318 , H04L2025/03414 , H04L2025/0342
摘要： A method and apparatus is disclosed herein for a modified soft output M-algorithm. In one embodiment, the soft output M-algorithm is employed by a receiver in a wireless communication system to receive information-bearing signals wirelessly transmitted from the transmitter wirelessly transmitted, the receiver comprising: an inner decoder structure having a multiple-in multiple-out (MIMO) joint demapper to perform joint inner demapping over each tone, the joint demapper being operable to apply a soft-output M-type algorithm to identify survivor candidates at each depth in a detection tree being searched for each tone, including surviving full-length candidates, based on at least one metric and at least one other criterion, where a number of best alternatives from every level of the tree are expanded along with one or more alternatives selected meeting the at least one other criterion and where soft-output related information is collected and stored for each bit, and an outer decoder operable with the inner decoder to perform iterative decoding.
摘要翻译：本文公开了一种用于修改的软输出M算法的方法和装置。在一个实施例中，软输出M算法被无线通信系统中的接收机采用以接收从无线发送的发射机无线发射的信息承载信号，所述接收机包括：内部解码器结构，其具有多进多出（MIMO）联合解映射器，以对每个音调执行联合内部解映射，所述联合解映射器可操作以应用软输出M型算法来识别正在搜索每个音调的检测树中的每个深度处的幸存候选者，基于至少一个度量和至少一个其他标准，其中来自所述树的每个级别的多个最佳替代物与满足所述至少一个其他标准的一种或多种选择一起扩展，并且其中软输出相关针对每个位收集和存储信息，以及可以与内部解码器一起执行迭代解码的外部解码器。

3. 发明申请

WO2010129550A3 RECEIVER TERMINAL DRIVEN JOINT ENCODER AND DECODER MODE ADAPTATION FOR SU-MIMO SYSTEMS 审中-公开
标题翻译： SU-MIMO系统的接收机终端编码器和解码器模式适配
公开(公告)号：WO2010129550A3
公开(公告)日：2011-02-24
申请号：PCT/US2010033549
申请日：2010-05-04
申请人： NTT DOCOMO INC , RAMPRASHAD SEAN A , PAPADOPOULOS HARALABOS C , CAIRE GIUSEPPE , SUNDBERG CARL-ERIK W
发明人： RAMPRASHAD SEAN A , PAPADOPOULOS HARALABOS C , CAIRE GIUSEPPE , SUNDBERG CARL-ERIK W
IPC分类号： H04L1/00
CPC分类号： H04L1/0009 , H04L1/0003 , H04L1/0017 , H04L1/0025
摘要： A system, a method and an apparatus are disclosed herein for receiver terminal driven joint encoder and decoder mode adaptation for SU-MIMO transmission. In one embodiment, the system comprises a transmitter that is able to be directed to transmit wireless signals over a multiple-input, multiple output (MIMO) system using any of a plurality of encoding modes; and a user terminal having a receiver comprising a decoding module which has a plurality of decoding modes, each of which can be used to decode communications from the transmitter received over a multiple-input, multiple output (MIMO) channel, wherein at least one encoding mode is operable with multiple of the decoding modes. The system also comprises a joint selection module that is operable to select for the MIMO transmission the decoding mode from the plurality of decoding modes and an encoding mode from the plurality of encoding modes to be used by the transmitter on the channel, the selection being based on receiver-dependent criteria corresponding to the decoding mode associated with the encoding mode and channel information, receiver hardware and state, and application-specific constraints. The joint selection module is operable to send information to identify the encoding mode to the transmitter using a feedback channel.
摘要翻译：本文公开了一种用于SU-MIMO传输的接收机终端驱动联合编码器和解码器模式适配的系统，方法和装置。在一个实施例中，系统包括能够被引导以使用多输入多输出（MIMO）系统中的任何一种编码模式来发送无线信号的发射机; 以及具有接收机的用户终端，所述接收机包括具有多个解码模式的解码模块，每个解码模式可用于解码来自通过多输入多输出（MIMO）信道接收的发射机的通信，其中至少一个编码模式可用多种解码模式操作。所述系统还包括联合选择模块，其可操作以从所述多个解码模式中选择所述MIMO传输解码模式，以及从所述多个编码模式中选择所述发射机在所述信道上使用所述编码模式，所述选择基于对应于与编码模式和信道信息，接收机硬件和状态以及应用特定约束相关联的解码模式的接收机相关标准。联合选择模块可操作以使用反馈信道向发射机发送信息以识别编码模式。

4. 发明申请

WO2010019618A3 CHANNEL CLASSIFICATION AND RATE ADAPTATION FOR SU-MIMO SYSTEMS 审中-公开
标题翻译： SU-MIMO系统的信道分类和速率适应
公开(公告)号：WO2010019618A3
公开(公告)日：2010-08-05
申请号：PCT/US2009053472
申请日：2009-08-11
申请人： NTT DOCOMO INC , CAIRE GIUSEPPE , SUNDBERG CARL-ERIK W , PAPADOPOULOS HARALABOS , RAMPRASHAD SEAN A
发明人： CAIRE GIUSEPPE , SUNDBERG CARL-ERIK W , PAPADOPOULOS HARALABOS , RAMPRASHAD SEAN A
IPC分类号： H04L1/00
CPC分类号： H04L1/0025 , H04L1/0003 , H04L1/0009 , H04L1/0036
摘要： A method, apparatus and system are disclosed herein for channel classification and adaptation. In one embodiment, the system comprises a base station having a transmitter that is operable to transmit wireless signals using a plurality of transmission options; and a user terminal having a receiver that is operable to receive and decode wireless signals using a plurality of receiver algorithms, where the user terminal is operable to receive communications from the transmitter over a multiple-input, multiple output (MIMO) channel, to select at least one coding mode to be used by the transmitter on the channel based on rates achievable using MIMO transmission, in view of the channel information, using different combinations of one of the plurality of receiver algorithms and one of the plurality of transmission options, and to send information to identify the at least one coding mode to the base station using a feedback channel, each coding mode specifying at least an encoder to be used by the transmitter for the channel.
摘要翻译：本文公开了用于信道分类和适应的方法，设备和系统。在一个实施例中，该系统包括具有发射器的基站，该发射器可操作以使用多个发射选项发射无线信号; 以及具有接收机的用户终端，所述接收机可操作以使用多个接收机算法来接收和解码无线信号，其中所述用户终端可操作以在多输入多输出（MIMO）信道上接收来自所述发射机的通信以选择基于使用MIMO传输可实现的速率，由信道上的发射机使用的至少一个编码模式，考虑到信道信息，使用多个接收机算法之一和多个传输选项中的一个的不同组合，以及使用反馈信道向所述基站发送识别所述至少一种编码模式的信息，每种编码模式至少指定要由所述发射机用于所述信道的编码器。

5. 发明申请

WO2009039043A3 METHODS AND APPARATUS FOR WIDEBAND TRANSMISSION BASED ON MULTI-USER MIMO AND TWO-WAY TRAINING 审中-公开
标题翻译：基于多用户MIMO和双向培训的宽带传输方法与装置
公开(公告)号：WO2009039043A3
公开(公告)日：2009-06-04
申请号：PCT/US2008076252
申请日：2008-09-12
申请人： NTT DOCOMO INC , GOMADAM KRISHNA , PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
发明人： GOMADAM KRISHNA , PAPADOPOULOS HARALABOS , SUNDBERG CARL-ERIK W
IPC分类号： H04B7/04 , H04B7/06
CPC分类号： H04B7/0417 , H04B7/0452 , H04B7/0465 , H04B7/0617 , H04B7/0626 , H04L25/0204 , H04L25/0224 , H04L27/2601
摘要： A method, apparatus and system is disclosed herein for wireless transmission based on MU-MIMO and two-way training. In one embodiment, the system comprises a set of K receivers and at least one transmitter having a set of N transmit antennas, where the transmitter is operable to precode a signal for downlink transmission to each receiver in the set of K receivers based on multi-user MIMO using precoding derived based on two-way channel training between the set of K receivers and the set of N transmit antennas. In another embodiment, the method comprises a transmitter receiving K pilot symbols, each K pilot symbol being transmitted by one of the set of K receivers; estimating channels directly at the transmitter based on received K pilot symbols; deriving a MU-MIMO precoder using the channel estimates; transmitting 1 to K pilot symbols using the MU-MIMO precoder to the set of K receivers to enable the K receivers to estimate their respective effective channels; and sending a downlink transmission using the MU-MIMO precoder to at least one of the set of K receivers.
摘要翻译：本文公开了一种基于MU-MIMO和双向训练的无线传输的方法，装置和系统。在一个实施例中，系统包括一组K个接收机和至少一个具有一组N个发射天线的发射机，其中发射机可操作地基于多个发射天线预先编码用于下行链路传输到该K个接收机组中的每个接收机的信号，用户MIMO使用基于K组接收机组和N组发射天线之间的双向信道训练得到的预编码。在另一个实施例中，该方法包括接收K个导频符号的发射机，每个K个导频符号由该K个接收机组之一发射; 基于接收到的K个导频符号，在发射机处直接估计信道; 使用信道估计导出MU-MIMO预编码器; 使用MU-MIMO预编码器向K个接收机组发送1到K个导频符号，以使K个接收机能够估计它们各自的有效信道; 以及使用所述MU-MIMO预编码器向所述一组K个接收机中的至少一个发送下行链路传输。

6. 发明申请

WO2008048651A2 INFORMATION DELIVERY OVER TIME-VARYING NETWORK TOPOLOGIES 审中-公开
标题翻译：信息交付过时网络拓扑
公开(公告)号：WO2008048651A2
公开(公告)日：2008-04-24
申请号：PCT/US2007022189
申请日：2007-10-17
申请人： NTT DOCOMO INC , KOZAT ULAS C , PAPADOPOULOS HARALABOS , PEPIN CHRISTINE , RAMPRASHAD SEAN A , SUNDBERG CARL-ERIK W
发明人： KOZAT ULAS C , PAPADOPOULOS HARALABOS , PEPIN CHRISTINE , RAMPRASHAD SEAN A , SUNDBERG CARL-ERIK W
CPC分类号： H04L45/123 , H04L1/004 , H04L1/1607 , H04L41/0816 , H04L41/083 , H04L41/12 , H04L41/5022 , H04L45/02 , H04L45/28 , H04L2001/0093
摘要： A method and apparatus is disclosed herein for delivering information over time- varying networks. In one embodiment, the method comprises, for each of a plurality of time intervals, determining a virtual network topology for use over each time interval; selecting for the time interval based on the virtual network topology, a fixed network code for use during the time interval; and coding information to be transmitted over the time-varying network topology using the fixed network code with necessary virtual buffering at each node.
摘要翻译：本文公开了一种用于通过时变网络递送信息的方法和装置。在一个实施例中，对于多个时间间隔中的每一个，所述方法包括：确定虚拟网络拓扑以在每个时间间隔内使用; 基于虚拟网络拓扑选择时间间隔，在时间间隔期间使用固定网络代码; 以及使用固定网络代码通过时变网络拓扑传输的编码信息，并在每个节点具有必要的虚拟缓冲。

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