公开(公告)号：EP2807746A1

公开(公告)日：2014-12-03

申请号：EP13741389.4

申请日：2013-01-28

申请人： Futurewei Technologies, Inc.

发明人： SUH, Junghoon ,  AU, Kwok Shum ,  ABOUL-MAGD, Osama ,  WU, Tianyu

IPC分类号： H03M13/15

CPC分类号： A47D13/00 ,  A47D5/006 ,  A47D13/08 ,  A47D15/003 ,  A47L11/28 ,  H04L1/0054 ,  H04L1/0071 ,  H04L25/03286 ,  H04L27/01 ,  H04L27/2602

摘要： Efficient decoding in IEEE 802.11ah networks can be achieved by transmitting the signal (SIG) preamble field without interleaving bits within the SIG field. This may allow channel equalization and decoding steps to be performed contemporaneously upon reception of the frame, which allows for the implementation of non-linear channel equalization techniques (e.g., maximum likelihood (ML) equalization, etc.

公开(公告)号：EP2293483A3

公开(公告)日：2014-06-25

申请号：EP10174589.1

申请日：2010-08-31

申请人： STMicroelectronics Srl ,  Politecnico Di Milano

发明人： Siti, Massimiliano ,  Cupaiuolo, Teo ,  Tomasoni, Alessandro ,  Bellini, Sandro

IPC分类号： H04L1/06 ,  H04L25/02 ,  H04L25/03

CPC分类号： H04L25/0202 ,  H04L1/06 ,  H04L25/03184 ,  H04L25/03267 ,  H04L25/03286 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/03414 ,  H04L2025/03426

摘要： An embodiment of a method and device for detecting a signal and generating bit soft-output of a multiple-input multiple-output system is provided.
The device includes at least one channel estimates pre-processing unit, one received vector processing and one detection and soft-output generation unit.
The pre-processing unit calculates multiple QR Decompositions of the input channel estimation matrix.
The detection and soft-output generation unit computes near optimal bit soft output information with a deterministic complexity and latency.
It may implement a reduced complexity search method.
Globally, embodiments of the invention may allow achieving low complexity, high data rate, scalability in terms of the dimension of the MIMO system and flexibility versus the supported modulation order, all potentially key factors for most MIMO wireless transmission applications.

公开(公告)号：EP2550782A2

公开(公告)日：2013-01-30

申请号：EP11709491.2

申请日：2011-02-23

申请人： Telefonaktiebolaget L M Ericsson (PUBL)

发明人： GRANT, Stephen ,  BOTTOMLEY, Gregory E.

IPC分类号： H04L25/03

CPC分类号： H04L25/03286 ,  H04B2201/709727 ,  H04L1/0047 ,  H04L25/03178 ,  H04L25/03229 ,  H04L25/03331 ,  H04L2025/03426

摘要： Teachings presented herein offer improved symbol block detection by including a decoder unit in a demodulation system. Utilizing a decoder unit in a demodulation system can significantly enhance symbol block detection because the decoder can produce bit likelihood values (soft bit values), and these bit likelihood values can be used to construct a set of candidate symbol values. Advantageously, this set of candidate symbol values is more likely to contain the actually transmitted symbol(s) than if the decoder unit was not used in the demodulation system.

公开(公告)号：EP1698057A4

公开(公告)日：2012-06-20

申请号：EP03774791

申请日：2003-10-09

申请人： COLLISION TECHNOLOGY LLC

发明人： MILLS DIANE G

IPC分类号： H03M13/03 ,  H04L1/00 ,  H04L25/03

CPC分类号： H04L25/03171 ,  H04L1/005 ,  H04L25/03286 ,  H04L25/03331

公开(公告)号：EP2432180A2

公开(公告)日：2012-03-21

申请号：EP11007541.3

申请日：2011-09-15

申请人： Harris Corporation

发明人： Shaver, Joseph ,  Nieto, John Wesley ,  Furman, William Nelson

IPC分类号： H04L25/03

CPC分类号： H04L1/0055 ,  H04L1/0065 ,  H04L25/03171 ,  H04L25/03286 ,  H04L27/18

摘要： A mobile wireless communications device may include an antenna, and a receiver coupled to the antenna and being configured to use a modulation having memory for a received message in a block structure. The block structure may include a pair of mini-probes and a body therebetween. The receiver may be configured to demodulate the received message by determining a corresponding set of received signal characteristic values based upon the pair of mini-probes, and determining a decode starting point in the body based upon the set of received signal characteristic values. The receiver may be configured to demodulate the received message by at least, from the decode starting point, decoding the body in a first time direction, and decoding the body in a second time direction based upon a result of the decoding in the first direction.

摘要翻译： 一种移动无线通信设备可以包括天线和接收器耦合到所述天线并且被配置为使用具有调制存储器用于在块结构中的接收的消息。 块结构可以包括一对微型探针和主体之间存在。 接收器可被配置成通过确定采矿解调接收到的消息的对应的一组基于所述一对微型探针，和确定性采矿在基于该组所接收信号的特性值的主体中的解码开始点的接收信号特征值。 接收器可被配置成通过至少以解调所接收的消息，从解码的起点，在第一时间方向解码体，以及在基于在所述第一方向上的解码结果的第二时间方向进行译码的机构。

公开(公告)号：EP2215758A1

公开(公告)日：2010-08-11

申请号：EP08853713.9

申请日：2008-11-27

申请人： Nokia Corporation

发明人： HEIKKILÄ, Markku

IPC分类号： H04L1/00 ,  H04B1/707

CPC分类号： H04L25/03331 ,  H04B1/7107 ,  H04J11/004 ,  H04L1/0045 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03286 ,  H04L2025/03414 ,  H04L2025/03426

摘要： An apparatus for determining a symbol estimate includes a detection unit, an information storage, a channel decoder, and an estimator. One or more detectors of the detection unit is configured to detect a first data stream and the one or more detectors or one or more other detectors are configured to detect a second data stream when interference cancellation is carried out and when interference cancellation is not carried out parallel to detection of a first data stream to obtain results of detection. The information storage is configured to store the results of the detection of the second data stream, and the channel decoder is configured to channel decode a detected first data stream. The estimator is configured to determine a symbol estimate by using the stored results of the detection of the second data stream and based on the success of the channel decoding of the first data stream.

公开(公告)号：EP1540823B9

公开(公告)日：2008-06-11

申请号：EP03728976.6

申请日：2003-05-14

申请人： BAE SYSTEMS Information and Electronic Systems Integration, Inc.

发明人： MILLS, Diane, G. ,  LEARNED, Rachel, E.

IPC分类号： H03M13/45 ,  H04L1/00 ,  H04B1/12 ,  H04J13/02

CPC分类号： H04L25/067 ,  H03M13/2957 ,  H04B1/7105 ,  H04J13/0077 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0066 ,  H04L1/0071 ,  H04L25/0204 ,  H04L25/03171 ,  H04L25/03203 ,  H04L25/03216 ,  H04L25/03286 ,  H04L25/03331 ,  H04L2025/03611

摘要： A real-time multi-user detection (MUD) receiver processing simultaneous digitally modulated interferers and transmissions in the same frequency optimizing performance for heavily loaded and overloaded multiple access systems implementing an iterative TurboMUD receiver using tree-pruning, including confidence ordering, power-ordering, and a voting procedure (330). On the first iteration, user indices are ordered according to received powers. On subsequent iterations, the voting system provides soft decisions or confidence values utilized as soft inputs to single-user decoders (340). Voting (330) is computationally attractive and allows the bank of decoders to operate on soft values, improving performance and reducing the number of turboMUD iterations. The bank of soft output error correction decoders produces an improved set of soft decisions or confidence values corresponding to the channel bits transmitted by each interfering user. Confidence values from the bank of decoders are used to order user indices, allowing the tree pruned MUD detector (320) to operate on the most reliable symbols first, improving the likelihood that pruning is correct. Subsequent confidence ordering and estimate refinement occurs until conditions are satisfied and iterative processing completed.

摘要翻译： 一个实时多用户检测（MUD）接收机处理同时数字调制的干扰和传输，在同一频率下优化高负荷和超负荷多址系统的性能，实现使用树修剪的迭代TurboMUD接收机，包括置信度排序，功率排序 和投票程序（330）。 在第一次迭代中，用户索引根据收到的权力排序。 在随后的迭代中，投票系统提供用作单用户解码器的软输入的软判决或置信值（340）。 投票（330）在计算上具有吸引力，并允许解码器组对软值进行操作，从而提高性能并减少turboMUD迭代次数。 软输出纠错解码器组产生与每个干扰用户发送的信道比特相对应的一组改进的软判决或置信值。 使用来自解码器组的置信度值来对用户索引进行排序，允许树修剪MUD检测器（320）首先对最可靠的符号进行操作，从而改善修剪正确的可能性。 随后的置信度排序和估计细化发生，直到条件满足并且迭代处理完成。

公开(公告)号：EP1671430A1

公开(公告)日：2006-06-21

申请号：EP03754910.2

申请日：2003-09-25

申请人： BAE SYSTEMS Information and Electronic Systems Integration Inc.

发明人： MACLEOD, Robert, B.

IPC分类号： H04B1/707 ,  H04B15/00 ,  H03D1/04 ,  H03D1/06

CPC分类号： H04L25/03331 ,  H04B1/7105 ,  H04B2201/70707 ,  H04L25/03171 ,  H04L25/03286 ,  H04L2025/03611

摘要： A system is provided for use with a multi-user detector MUD, which dramatically decreases the processing time for separating out interfering transmissions from a number of users by eliminating from each processing iteration consideration of those bit estimates for which the probability or estimate of their value exceeds a predetermined threshold and can therefore be declared 'certain'. In a Turbo MUD environment in which the output of the MUD is coupled back to the MUD (14) through an error correction system (28), the output of the error correction is thresholded (30) such that those bit estimates having probabilities or estimates greater than a predetermined threshold are assigned a quantized value and are eliminated from further processing by the MUD.

公开(公告)号：EP1516470B1

公开(公告)日：2005-10-05

申请号：EP03760586.2

申请日：2003-05-14

申请人： Rohde & Schwarz GmbH & Co. KG

发明人： BOTT, Rainer ,  SORGER, Ulrich ,  GLIGOREVIC, Snjezana

IPC分类号： H04L27/26

CPC分类号： H04L25/03292 ,  H04L25/0224 ,  H04L25/024 ,  H04L25/03286 ,  H04L2025/03414 ,  H04L2025/03445 ,  H04L2025/03522

公开(公告)号：EP1554798A1

公开(公告)日：2005-07-20

申请号：EP03719942.9

申请日：2003-04-25

申请人： BAE SYSTEMS Information and Electronic Systems Integration, Inc.

发明人： TAYLOR, Matthew, A. ,  MACLEOD, Robert, B. ,  LEARNED, Rachel, E. ,  NIEDZWIECKI, Joshua, D. ,  BROMMER, Karl, D. ,  MCELWAIN, Thomas, P.

IPC分类号： H03D1/04

CPC分类号： H04B1/71055 ,  H04B7/10 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0246 ,  H04L25/0248 ,  H04L25/03197 ,  H04L25/03216 ,  H04L25/03222 ,  H04L25/03286 ,  H04L25/03305 ,  H04L25/03318 ,  H04L25/03331 ,  H04L2025/03426

摘要： A digital receiver (10) automatically detects and non-coherently demodulates a multiplicity of interfering digitally modulated signals transmitted simultaneously at approximately the same carrier frequency. The receiver (10) includes one or more antenna inputs (e.g., polarization and/or space diverse) (13), a parameter estimator module (20), and a multiuser detector (18) for estimating the data transmitted by each interfering signals and adapted to operate with at least one of a MUD algorithm with partially quantized prior information and a MUD algorithm based on prewhitened data.