公开(公告)号：US08670497B2

公开(公告)日：2014-03-11

申请号：US13253412

申请日：2011-10-05

申请人： Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang ,  Karl Molnar ,  Jung-Fu Cheng

发明人： Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang ,  Karl Molnar ,  Jung-Fu Cheng

IPC分类号： H04B7/02

CPC分类号： H04B1/712 ,  H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/7107 ,  H04B1/71072 ,  H04B7/04 ,  H04B7/0684 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/18 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/03012 ,  H04L25/03318 ,  H04L25/03331 ,  H04W52/16 ,  H04W52/325 ,  H04W52/346 ,  H04W52/42

摘要： A wireless communication receiver improves signal impairment correlation estimation in MIMO/MISO systems by considering different transmit power allocations and different transmit antenna power distributions in its impairment correlation calculations. The receiver may be implemented in according to a variety of architectures, including, but not limited to, Successive Interference Cancellation (SIC) Generalized RAKE (G-RAKE), Joint Detection (JD) G-RAKE, and Minimum Mean Squared Error (MMSE) G-RAKE. Regardless of the particular receiver architecture adopted, the improved impairment correlations may be used to calculate improved (RAKE) signal combining weights and/or improve channel quality estimates for reporting by receivers operating in Wideband CDMA (W-CDMA) systems transmitting HSDPA channels via MIMO or MISO transmitters. A transmitter may be configured to facilitate impairment correlation determinations by wireless communication receivers operating in MIMO/MISO environments, by signaling one or more values, e.g., data-to-pilot signal transmit power ratios and/or transmit antenna power distributions for the data and pilot signals.

摘要翻译： 无线通信接收机通过在损伤相关计算中考虑不同的发射功率分配和不同的发射天线功率分布来改善MIMO / MISO系统中的信号损害相关估计。 接收机可以根据各种架构来实现，包括但不限于连续干扰消除（SIC）广义RAKE（G-RAKE），联合检测（JD）G-RAKE和最小均方误差（MMSE） ）G-RAKE。 不考虑所采用的特定接收机架构，改进的损害相关可以用于计算改进的（RAKE）信号组合权重和/或改善用于在通过MIMO发送HSDPA信道的宽带CDMA（W-CDMA）系统中操作的接收机报告的信道质量估计 或MISO发射机。 发射机可以被配置为通过信令一个或多个值（例如数据到导频信号发射功率比和/或数据的发射天线功率分布）来促进在MIMO / MISO环境中操作的无线通信接收机的损害相关确定，以及 导频信号。

公开(公告)号：US08428164B2

公开(公告)日：2013-04-23

申请号：US12679419

申请日：2008-03-31

申请人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

发明人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

IPC分类号： H04L27/28 ,  H04K1/10

CPC分类号： H04W72/0406 ,  H04J11/0069 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/0079 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/2637 ,  H04W72/042

摘要： A method and a radio base station for interleaving control channel data to be transmitted in a telecommunications system are described. The method comprises grouping the control channel elements CCE1-CCEn into a first order of control channel symbol groups, determining a number of available symbol group positions of control channel transmission resources, adding symbol groups comprising “dummy” values or zeros to the first order of control channel symbol groups, interleaving the first order of the control channel symbol groups resulting in an a second order, cyclic shifting the second order and mapping the cyclic shifted second order of control channel symbol groups to the control channel transmission resources.

摘要翻译： 描述用于交织要在电信系统中发送的控制信道数据的方法和无线电基站。 该方法包括将控制信道单元CCE1-CCEn分组为控制信道符号组的一级，确定控制信道传输资源的可用符号组位置的数目，将包括“虚拟”值或零的符号组添加到第一级 控制信道符号组，交织导致二阶的控制信道符号组的第一级，循环移位第二级，并将循环移位的第二级控制信道符号组映射到控制信道传输资源。

公开(公告)号：US20120214530A1

公开(公告)日：2012-08-23

申请号：US13462137

申请日：2012-05-02

申请人： Karl Molnar ,  Bo Hagerman

发明人： Karl Molnar ,  Bo Hagerman

IPC分类号： H04W72/08 ,  H04W24/02 ,  H04W88/02 ,  H04W52/26 ,  H04W88/08

CPC分类号： H04B7/0408 ,  H01Q1/246 ,  H01Q3/26 ,  H04B7/0632 ,  H04W16/28 ,  H04W72/046

摘要： A base station and method are described herein that improves the coverage in a fixed-beam wireless communication system by using antenna beam-jitter and Channel Quality Information (CQI) correction. In one embodiment, the method includes the steps of: (a) modifying a beam by introducing a beam-jitter in a beam-forming pattern; (b) receiving an estimated channel quality information, CQI, from a user terminal; (c) accounting for effects of the beam jitter on the estimated CQI to obtain a jitter-adjusted CQI estimate; (d) and using the jitter-adjusted CQI estimate during user scheduling for a future transmission to the user terminal.

摘要翻译： 本文描述了通过使用天线波束抖动和信道质量信息（CQI）校正来改进固定波束无线通信系统中的覆盖范围的基站和方法。 在一个实施例中，该方法包括以下步骤：（a）通过在波束形成模式中引入波束抖动来修改波束; （b）从用户终端接收估计的信道质量信息CQI; （c）考虑光束抖动对估计的CQI的影响以获得抖动调整的CQI估计; （d），并且在用户调度期间使用抖动调整后的CQI估计，以便将来传输到用户终端。

公开(公告)号：US20110103520A1

公开(公告)日：2011-05-05

申请号：US12612208

申请日：2009-11-04

申请人： Karl Molnar

发明人： Karl Molnar

IPC分类号： H04L27/06

CPC分类号： H04L27/0008 ,  H04L27/2649

摘要： In one embodiment, a receiver implements a method of demodulating a set of symbols dispersed within a time-frequency grid of a received OFDM signal. The method includes determining which one of two or more demodulators is preferred for use in a given region of the time-frequency grid by evaluating detection statistics generated by the demodulators for the set of symbols. Each demodulator operates according to different demodulation parameters that correspond to different interference assumptions. The method further includes recovering the set of symbols for decoding using whichever demodulator is preferred for each symbol according to the region from which the symbol is recovered. The method may be further extended by updating each demodulator's demodulation parameters using reference and/or data symbols from the region(s) where that demodulator is preferred, and recovering the desired symbols using the updated demodulation parameters. Such updating can be further iterated, for additional demodulation parameter refinement.

摘要翻译： 在一个实施例中，接收机实现解调分散在接收的OFDM信号的时间 - 频率网格内的一组符号的方法。 该方法包括通过评估用于该组符号的解调器生成的检测统计来确定两个或更多个解调器中哪一个优选用于时间频率网格的给定区域。 每个解调器根据对应于不同干扰假设的不同解调参数进行操作。 该方法还包括根据从其恢复符号的区域，使用优选用于每个符号的哪个解调器来恢复用于解码的符号集合。 可以通过使用来自优选解调器的区域的参考和/或数据符号来更新每个解调器的解调参数，以及使用更新的解调参数来恢复所需符号来进一步扩展该方法。 对于额外的解调参数细化，可以进一步重复这种更新。

公开(公告)号：US07912433B2

公开(公告)日：2011-03-22

申请号：US12750793

申请日：2010-03-31

申请人： Karl Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

发明人： Karl Molnar ,  Jung-Fu Cheng ,  Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang

IPC分类号： H04B17/00

CPC分类号： H04L1/0019 ,  H04B2201/709727 ,  H04L1/0002 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0202 ,  H04L25/0222 ,  H04L27/2647

摘要： A method and apparatus for generating channel quality information, such as may be used for transmit link adaptation, provide different operating modes, such as a first mode that may be used when propagation channel estimates are not reliable, and a second mode that may be used when the propagation channel estimates are reliable. In one or more embodiments, channel quality information is generated using receiver performance information that characterizes receiver performance in terms of a defined channel quality metric, e.g., supported data rates, for different values of receiver input signal quality over a range of propagation channel realizations. Channel quality information can be generated by selecting channel quality metrics according to receiver input signal quality and a desired probability of meeting a defined performance requirement over a range of propagation channel realizations, or by selecting channel quality metrics according to receiver input signal quality and particularized propagation channel realizations.

摘要翻译： 用于产生信道质量信息的方法和装置，例如可以用于发送链路自适应，提供不同的操作模式，例如当传播信道估计不可靠时可以使用的第一模式，以及可以使用的第二模式 当传播信道估计是可靠的。 在一个或多个实施例中，使用接收机性能信息来生成信道质量信息，所述接收机性能信息根据定义的信道质量度量（例如，支持的数据速率），在传播信道实现范围内针对接收机输入信号质量的不同值来表征接收机性能。 可以通过根据接收机输入信号质量选择信道质量度量并且在传播信道实现范围内满足定义的性能要求的期望概率，或者通过根据接收机输入信号质量和特定传播选择信道质量度量来生成信道质量信息 渠道实现。

公开(公告)号：US20100112952A1

公开(公告)日：2010-05-06

申请号：US12262724

申请日：2008-10-31

申请人： Karl Molnar ,  Bo Hagerman

发明人： Karl Molnar ,  Bo Hagerman

IPC分类号： H04B15/00

CPC分类号： H04B7/0408 ,  H01Q1/246 ,  H01Q3/26 ,  H04B7/0632 ,  H04W16/28 ,  H04W72/046

摘要： A base station and method are described herein that improves the coverage in a fixed-beam wireless communication system by using antenna beam-jitter and Channel Quality Information (CQI) correction. In one embodiment, the method includes the steps of: (a) modifying a beam by introducing a beam-jitter in a beam-forming pattern; (b) receiving an estimated channel quality information, CQI, from a user terminal; (c) accounting for effects of the beam-jitter on the estimated CQI to obtain a jitter-adjusted CQI estimate; (d) and using the jitter-adjusted CQI estimate during user scheduling for a future transmission to the user terminal.

摘要翻译： 本文描述了通过使用天线波束抖动和信道质量信息（CQI）校正来改进固定波束无线通信系统中的覆盖范围的基站和方法。 在一个实施例中，该方法包括以下步骤：（a）通过在波束形成模式中引入波束抖动来修改波束; （b）从用户终端接收估计的信道质量信息CQI; （c）考虑波束抖动对估计的CQI的影响以获得抖动调整的CQI估计; （d），并且在用户调度期间使用抖动调整后的CQI估计，以便将来传输到用户终端。

公开(公告)号：US20080304586A1

公开(公告)日：2008-12-11

申请号：US11760285

申请日：2007-06-08

申请人： Karl Molnar

发明人： Karl Molnar

IPC分类号： H04K1/10 ,  H03D1/06

CPC分类号： H04L25/0212 ,  H04B1/7105 ,  H04B1/7115 ,  H04B2201/709727 ,  H04L25/0204

摘要： RAKE-based receivers utilize lattice reduction for improving symbol estimation accuracy. Channel response estimates and received signal streams are transformed from a constellation lattice basis to an integer lattice basis to increase the orthogonality of symbol estimation decision regions. In one embodiment, received signal streams are processed by generating despread signal samples from received signal streams transmitted using different spreading codes. Channel response associated with the different received signal streams is estimated and transformed from a first lattice basis to a second lattice basis having greater orthogonality between decision regions than the first lattice basis. The despread signal samples are aligned to the second lattice and combining weights generated based on the transformed channel response estimate. Symbol estimation decision statistics are generated based on the combining weights and the aligned despread signal samples. Soft bit values are generated for decoding based on the symbol estimation decision statistics.

摘要翻译： 基于RAKE的接收机利用晶格简化来提高符号估计精度。 信道响应估计和接收信号流从星座晶格转换为整数格基，以增加符号估计决定区域的正交性。 在一个实施例中，通过从使用不同扩展码发送的接收信号流中产生解扩信号样本来处理接收信号流。 与不同的接收信号流相关联的信道响应被估计并从第一格子基变换到具有比第一格子基的判定区之间更大的正交性的第二格基。 解扩信号样本与第二晶格对准，并且基于经变换的信道响应估计产生的组合权重。 基于组合权重和对准的解扩展信号样本生成符号估计判定统计量。 生成用于基于符号估计判定统计的解码的软比特值。

公开(公告)号：US06252918B1

公开(公告)日：2001-06-26

申请号：US09267378

申请日：1999-03-15

申请人： Gregory E. Bottomley ,  Karl Molnar ,  Rajaram Ramesh

发明人： Gregory E. Bottomley ,  Karl Molnar ,  Rajaram Ramesh

IPC分类号： H04B110

CPC分类号： H04B1/707 ,  H04B7/005 ,  H04L25/0202 ,  H04L25/03178 ,  H04L25/03299

摘要： According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.

摘要翻译： 根据本发明，利用脉冲整形的知识，传输介质对所发送的信息符号的影响与其他效果（例如与接收和发射滤波器相关的效果）分开估计。 然后使用介质响应估计来检测信息符号。 以前，接收机已经使用复合信道的估计来检测符号。 然而，这是假设不相关的噪音，并不总是这样。

公开(公告)号：US6134286A

公开(公告)日：2000-10-17

申请号：US950134

申请日：1997-10-14

申请人： Sandeep Chennakeshu ,  Karl Molnar

发明人： Sandeep Chennakeshu ,  Karl Molnar

IPC分类号： H04L27/22 ,  H04L7/00 ,  H04L7/04 ,  H04L7/08 ,  H04L27/233

CPC分类号： H04L27/2332 ,  H04L7/042

摘要： A method and apparatus for synchronizing and demodulating radio wave signals transmitted in frame format with an unique word, involving correcting the frequency offset of the received signal and differentially correlating the frequency corrected signal with the unique word, A first timing estimate is further refined by a 2-D search between frequency and time and a first frequency estimate is further refined by quadratic interpolation. The finely synchronized signal is demodulated using a Viterbi-based demodulator.

摘要翻译： 一种方法和装置，用于以唯一字同步和解调以帧格式发射的无线电波信号，涉及校正接收信号的频率偏移并将频率校正信号与唯一字差分相关。第一定时估计进一步由 通过二次插值进一步改进频率和时间之间的二维搜索和第一频率估计。 精细同步的信号使用基于维特比的解调器进行解调。

公开(公告)号：US08385360B2

公开(公告)日：2013-02-26

申请号：US12740457

申请日：2008-10-28

申请人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

发明人： Karl Molnar ,  Jung-Fu Cheng ,  Stefan Parkvall

IPC分类号： H04L12/28

CPC分类号： H04L5/0053

摘要： Control channel information is formulated for transmission in orthogonal frequency division multiplexing (OFDM) systems. In an example embodiment, a method entails formulating control channel information for a transmitting device operating in an OFDM system in which a control channel spans n OFDM symbols, with n being an integer. The method includes acts of allocating, creating, and mapping. Control channel data is allocated to at least one set of resource element groups. At least one order for the set of resource element groups is created in accordance with one or more permutation mechanisms that involve at least one interleaving sequence having a low cross-correlation property. The set of resource element groups is mapped to resource elements of the n OFDM symbols of the control channel responsive to the order that is created using the permutation mechanism(s). The permutation mechanisms may include interleaving sequence(s) and/or cyclic shift(s).

摘要翻译： 为正交频分复用（OFDM）系统中的传输制定了控制信道信息。 在一个示例实施例中，一种方法需要为其中控制信道跨越n个OFDM符号的OFDM系统中操作的发送设备制定控制信道信息，其中n为整数。 该方法包括分配，创建和映射的行为。 控制信道数据被分配给至少一组资源元素组。 根据涉及具有低互相关特性的至少一个交织序列的一个或多个置换机制，创建用于该组资源元素组的至少一个顺序。 响应于使用排列机制创建的顺序，将该组资源元素组映射到控制信道的n个OFDM符号的资源元素。 置换机制可以包括交织序列和/或循环移位。