公开(公告)号：US06473506B1

公开(公告)日：2002-10-29

申请号：US09170127

申请日：1998-10-13

申请人： Mikael H{umlaut over (oo)}k ,  Stefan Jäverbring

发明人： Mikael H{umlaut over (oo)}k ,  Stefan Jäverbring

IPC分类号： H04L2710

CPC分类号： H04L5/12 ,  H04L27/0012 ,  H04L27/18

摘要： In a telecommunications system, such as a cellular radio telecommunications system, transmission information, such as modulation scheme selection information, coding information or power level control commands, is efficiently conveyed from the transmitter to the receiver without increasing the bandwidth requirements and without introducing additional transmission delays. This can be accomplished by employing a data symbol phase rotation technique, wherein a sequence of data symbols, for example, a sequence of training symbols used for estimating the propagation characteristics of a given channel, are phase-rotated in accordance with a phase rotation factor that uniquely corresponds to the information being conveyed to the receiver. At the receiver, the symbols are de-rotated until the receiver recovers the training sequence. This allows the receiver to determine the phase rotation factor used to rotate the symbols at the transmitter. This, in turn, identifies the corresponding transmission information.

摘要翻译： 在诸如蜂窝无线电通信系统的电信系统中，诸如调制方案选择信息，编码信息或功率电平控制命令之类的传输信息在不增加带宽需求并且不引入附加传输的情况下被有效地从发射机传送到接收机 延误 这可以通过采用数据符号相位旋转技术来实现，其中，数据符号序列，例如用于估计给定信道的传播特性的训练符号序列，根据相位旋转因子进行相位旋转 其唯一地对应于正在传送到接收器的信息。 在接收机处，符号被去旋转直到接收机恢复训练序列。 这允许接收机确定用于在发射机处旋转符号的相位旋转因子。 这反过来又识别相应的传输信息。

公开(公告)号：US06269116B1

公开(公告)日：2001-07-31

申请号：US09156627

申请日：1998-09-18

申请人： Stefan Jäverbring ,  Mikael H{umlaut over (oo)}k

发明人： Stefan Jäverbring ,  Mikael H{umlaut over (oo)}k

IPC分类号： H03H730

CPC分类号： H04L25/03038 ,  H04L2025/0356

摘要： The present invention relates to a method and an arrangement for demodulating data symbols (d1-dN) having been transmitted through a communication channel, particularly a channel suffering from one or more impairments. Received signal samples ({overscore (&rgr;)}), representing the sent data symbols (d1-dN), are stored (310) and demodulated in both the forward (320) and the backward direction (330), via a demodulator/equaliser. In course of the demodulations are produced a first (SF) and a second (SB) respective set of soft values (skF; skB), which each is associated with a certain data symbol (dk). (340) From every pair of soft values (skF; skB) is then determined a joint soft value (SkJ), which e.g. may be utilised for deriving a resulting set of data symbols ({circumflex over (d)}1-{circumflex over (d)}N) or for directly decoding the payload information contained in the data symbols (d1-dN).

摘要翻译： 本发明涉及一种用于解调已经通过通信信道发送的数据符号（d1-dN）的方法和装置，特别是具有一个或多个损伤的信道。 表示发送数据符号（d1-dN）的接收信号样本（{overscore（rho）}）经过解调器/均衡器被存储（310）并在前向（320）和反向（330）中进行解调 。 在解调过程中，产生一个第一（SF）和第二（SB）各自的软值集合（skF; skB），它们各自与某个数据符号（dk）相关联。 （340）然后，从每对软值（skF; skB）确定关节软值（SkJ） 可以用于导出所得到的数据符号集合（{d（d）} 1- {circumflex over（d）} N）或用于直接解码包含在数据符号（d1-dN）中的有效载荷信息。

公开(公告)号：US06604216B1

公开(公告)日：2003-08-05

申请号：US09505792

申请日：2000-02-17

申请人： Stefan Jäverbring ,  Anders Furuskär ,  Stefan Eriksson ,  Magnus Frodigh

发明人： Stefan Jäverbring ,  Anders Furuskär ,  Stefan Eriksson ,  Magnus Frodigh

IPC分类号： H03M1300

CPC分类号： H04L1/0069 ,  H03M13/27 ,  H04L1/0009 ,  H04L1/1819

摘要： A wireless communications system, transmitter, receiver and method are provided that are capable of supporting incremental redundancy error handling schemes using available gross rate channels. More specifically, the transmitter includes a coding circuit for coding a digital data block and generating a mother code word, and a reordering circuit for reordering the mother code word and generating a reordered mother code word. The transmitter also includes a modulating circuit for modulating at least one subsequence each of which has a desired number of bits taken from the reordered mother code word to fill the available bandwidth of at least one available gross rate channel. The transmitter continues to forward the modulated subsequences to the receiver until the receiver successfully decodes the digital data block.

摘要翻译： 提供了能够使用可用的总速率信道来支持增量冗余错误处理方案的无线通信系统，发射机，接收机和方法。 更具体地，发送器包括用于对数字数据块进行编码并产生母码字的编码电路，以及用于对母码字重新排序并产生重排序的母码字的重排序电路。 发射机还包括调制电路，用于调制至少一个子序列，每个子序列具有从重新排序的母码字获得的期望数量的比特，以填充至少一个可用总速率信道的可用带宽。 发射机继续将调制的子序列转发到接收机，直到接收机成功解码数字数据块。

公开(公告)号：US06865233B1

公开(公告)日：2005-03-08

申请号：US09252989

申请日：1999-02-19

申请人： Stefan Eriksson ,  Anders Furuskär ,  Stefan Jäverbring ,  Mattias Wallman

发明人： Stefan Eriksson ,  Anders Furuskär ,  Stefan Jäverbring ,  Mattias Wallman

IPC分类号： H04L1/00 ,  H04L1/12 ,  H04L1/18 ,  H04L23/02

CPC分类号： H04L1/0016 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/12 ,  H04L1/1819 ,  H04L1/1845

摘要： Control signalling for systems employing link adaptation and incremental redundancy is described. A link adaptation/incremental redundancy message can be transmitted from a receiving entity to a transmitting entity to inform the transmitting entity of the receiving entity's incremental redundancy status or preference. Another message, which indicates whether resegmentation should be performed for retransmitted blocks can also be transmitted from a receiving entity to a transmitting entity. Both of these messages can be used by the transmitting entity to determine an appropriate modulation/coding scheme for subsequent transmissions of both original data blocks and retransmitted data blocks. The messages can be used together or independently in either link (uplink or downlink) between a base station and a mobile station in a radiocommunication system.

摘要翻译： 描述了采用链路自适应和增量冗余的系统的控制信令。 链路自适应/增量冗余消息可以从接收实体发送到发送实体，以向发送实体通知接收实体的增量冗余状态或偏好。 指示是否应对再发送的块执行重新分割的另一个消息也可以从接收实体发送到发送实体。 发送实体可以使用这两个消息来为原始数据块和重发数据块的后续传输确定适当的调制/编码方案。 消息可以一起使用或独立地在无线电通信系统中的基站和移动台之间的链路（上行链路或下行链路）中一起使用。

公开(公告)号：US06502063B1

公开(公告)日：2002-12-31

申请号：US09454220

申请日：1999-12-09

申请人： Stefan Eriksson ,  Anders Furuskär ,  Stefan Jäverbring

发明人： Stefan Eriksson ,  Anders Furuskär ,  Stefan Jäverbring

IPC分类号： G06F1500

CPC分类号： G01D1/00

摘要： An apparatus and method for recursive filtering of time discrete measurement data relating to a measurable time-varying attribute to generate an estimated magnitude for the attribute at a particular time instant. Each measurement has an associated reliability indicator representing a relative reliability of the measurement. Using the individual reliability indicators and a time-weighted filtered reliability indicator for a prior time instant, a filtered reliability indicator for the current time instant is generated. The filtered reliability indicator for the current time instant is then used to reliability-weight a weighted average of the plurality of measurements and to reliability-weight a time-weighted estimated magnitude for the prior time instant. The weighted values are then used to generate an estimated magnitude of the time-varying attribute for the current time instant.

摘要翻译： 一种用于对与可测量的时变属性相关的时间离散测量数据进行递归滤波以在特定时刻产生所述属性的估计幅度的装置和方法。 每个测量具有表示测量的相对可靠性的相关联的可靠性指示符。 使用单个可靠性指示符和一个时间加权滤波的可靠性指示符在以前的时刻，生成当前时刻的经滤波的可靠性指示符。 然后将用于当前时刻的经滤波的可靠性指示符用于对多个测量的加权平均值进行可靠性加权，并将可靠性权重加权在先前时刻的时间加权估计幅度。 然后，加权值用于产生当前时刻的时变属性的估计幅度。

公开(公告)号：US06381271B1

公开(公告)日：2002-04-30

申请号：US09134906

申请日：1998-08-17

申请人： Stefan Jäverbring

发明人： Stefan Jäverbring

IPC分类号： H04L2722

CPC分类号： H03M13/6331 ,  H03M13/39 ,  H03M13/41 ,  H03M13/6502 ,  H03M13/6505 ,  H04L25/03197 ,  H04L25/03235

摘要： A Decision Feedback Sequence Estimator (DFSE) metric is determined by storing one or more tables of Decision Feedback Estimation (DFE) hypotheses in a memory, and then using values of the DFE hypotheses that are retrieved from storage to determine the DFSE metric. The DFE hypotheses may be precalculated and stored into the memory prior to performance of any retrieval operation. Alternatively, the table may start out empty, and the DFE hypotheses may be determined as needed for a particular DFSE metric computation. The determined DFE metric may then be stored into a table for later retrieval if the metric is needed again. The DFE hypotheses may be stored into a single table or, to reduce memory requirements and computational complexity, may be stored into corresponding ones of plural tables. MLSE hypotheses, which are also used in the DFSE metric determination, may similarly be stored into one or more tables for later retrieval as needed.

摘要翻译： 通过将一个或多个判决反馈估计（DFE）假设表存储在存储器中，然后使用从存储器检索的DFE假设的值来确定DFSE度量来确定判决反馈序列估计器（DFSE）度量。 在执行任何检索操作之前，DFE假设可以被预先计算并存储到存储器中。 或者，表可以开始为空，并且DFE假设可以根据特定DFSE度量计算的需要来确定。 然后，如果再次需要度量，则可以将所确定的DFE度量存储在表中用于稍后检索。 DFE假设可以存储在单个表中，或者为了减少存储器需求和计算复杂度，可以将其存储到多个表中的相应表中。 也可以在DFSE度量确定中使用的MLSE假设可以类似地存储在一个或多个表中，以便随后根据需要进行检索。