公开(公告)号：US08045638B2

公开(公告)日：2011-10-25

申请号：US11449258

申请日：2006-06-08

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

发明人： Stephen J. Grant ,  Leonid Krasny ,  Yi-Pin Eric Wang ,  Karl J. 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：US07979075B2

公开(公告)日：2011-07-12

申请号：US11555294

申请日：2006-11-01

申请人： Jung-Fu Cheng ,  Stephen J. Grant ,  Dennis Hui ,  Karl James Molnar

发明人： Jung-Fu Cheng ,  Stephen J. Grant ,  Dennis Hui ,  Karl James Molnar

IPC分类号： H04W72/00

CPC分类号： H04L1/0026 ,  H04L1/0016 ,  H04L1/20 ,  H04W48/08 ,  H04W72/0413 ,  H04W72/085

摘要： Channel Quality Indicator (CQI) tables are tailored to one or more cells of interest. Tailoring CQI tables to individual cells permits devices such as radio base stations to more reliably and accurately allocate radio resources to those cells since channel conditions vary from cell to cell. According to one embodiment, a table of CQI values is composed by analyzing information indicating channel quality in a cell of interest and generating at least one table of CQI values tailored to the cell of interest based on the information analyzed. The tailored CQI table may be deployed to another device for use in reporting channel quality information. The device may report channel quality by accessing the tailored CQI and identifying the range of CQI values that includes a channel quality estimate derived by the device. The device generates a channel quality information message based on the identified range of CQI values.

摘要翻译： 信道质量指示符（CQI）表针对感兴趣的一个或多个小区而定制。 由于信道条件因单元而异，所以将CQI表裁定到单个小区允许诸如无线电基站之类的设备更可靠地且准确地分配无线电资源给这些小区。 根据一个实施例，通过分析指示感兴趣的小区中的信道质量的信息并基于分析的信息生成针对感兴趣小区定制的CQI值的至少一个表格来组成CQI值表。 可以将定制的CQI表部署到用于报告信道质量信息的另一设备。 设备可以通过访问定制的CQI并且识别包括由设备导出的信道质量估计的CQI值的范围来报告信道质量。 该设备基于所识别的CQI值范围来生成信道质量信息消息。

公开(公告)号：US20110105046A1

公开(公告)日：2011-05-05

申请号：US13005195

申请日：2011-01-12

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

发明人： Karl James 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：US20100260036A1

公开(公告)日：2010-10-14

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： H04J11/00 ,  H04L1/02

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。

公开(公告)号：US07810018B2

公开(公告)日：2010-10-05

申请号：US11553767

申请日：2006-10-27

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H03M13/03

CPC分类号： H04M15/00 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3972 ,  H03M13/413 ,  H04B2201/709727

摘要： In one or more embodiments, a method of processing a soft value sequence according to an iterative soft-input-soft-output (SISO) algorithm comprises carrying out sliding-window processing of the soft value sequence in a first iteration using first window placements and in a second iteration using second window placements, and varying the window placements between the first and second iterations. In at least one embodiment, a communication receiver circuit is configured to carry out iterative SISO processing, wherein it processes a soft value sequence using sliding windows, and wherein it varies window placements between one or more iterations. The communication receiver circuit comprises, for example, all or part of a turbo decoding circuit or other type of iterative block decoding circuit, an equalization and decoding circuit, a soft demodulation and decoding circuit, a multi-user detection and decoding circuit, or a multiple-input-multiple-output detection and decoding circuit.

摘要翻译： 在一个或多个实施例中，根据迭代软输入软输出（SISO）算法来处理软值序列的方法包括：使用第一窗口布局在第一次迭代中执行软值序列的滑动窗口处理;以及 在使用第二窗口布局的第二次迭代中，以及在第一和第二迭代之间改变窗口布局。 在至少一个实施例中，通信接收器电路被配置为执行迭代SISO处理，其中它使用滑动窗口处理软值序列，并且其中它改变一个或多个迭代之间的窗口布置。 通信接收电路例如包括turbo解码电路或其他类型的迭代块解码电路，均衡解码电路，软解调和解码电路，多用户检测和解码电路或全部或部分 多输入多输出检测和解码电路。

公开(公告)号：US20100251082A1

公开(公告)日：2010-09-30

申请号：US12739854

申请日：2008-10-23

申请人： Jung-Fu Cheng ,  Mats Ahlander ,  Christer Aalto

发明人： Jung-Fu Cheng ,  Mats Ahlander ,  Christer Aalto

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H03M13/09 ,  H03M13/2957 ,  H03M13/2975 ,  H04L1/0041 ,  H04L1/0051 ,  H04L1/0061

摘要： A method and apparatus for providing adaptive cyclic redundancy check (CRC) computation is disclosed. A transport block size is determined. Transport block (TB) CRC bits are computed with a first CRC generator when the TB size is less than or equal to a predetermined threshold. TB CRC bits are computed with a second CRC generator when the transport block size is greater than the predetermined threshold. When the TB is greater than the predetermined threshold, the TB is segmented into code blocks (CBs) and CB CRC bits are computed with the first CRC generator. A method and apparatus for handling adaptively cyclic redundancy check (CRC) encoded transport blocks (TBs) is also disclosed. A TB is received. The TB is CRC checked based on a first CRC generator when the TB size is less than or equal to a predetermined threshold. Code blocks of the TB are CRC checked based on the first CRC generator when the TB size is greater than the predetermined threshold. When the TB size is greater than the predetermined threshold, the code blocks are concatenated, and the TB is CRC checked based on a second CRC generator.

摘要翻译： 公开了一种用于提供自适应循环冗余校验（CRC）计算的方法和装置。 确定传输块大小。 传输块（TB）当TB大小小于或等于预定阈值时，使用第一CRC生成器计算CRC比特。 当传输块大小大于预定阈值时，用第二CRC产生器计算TB CRC比特。 当TB大于预定阈值时，TB被分割为码块（CB），并且用第一CRC产生器计算CB CRC比特。 还公开了一种用于处理自适应循环冗余校验（CRC）编码传输块（TB）的方法和装置。 收到结核病。 当TB大小小于或等于预定阈值时，TB基于第一CRC发生器进行CRC校验。 当TB大于预定阈值时，基于第一CRC生成器对TB的代码块进行CRC校验。 当TB大小大于预定阈值时，代码块被级联，并且基于第二CRC产生器检查TB是否被CRC校验。

公开(公告)号：US20090310708A1

公开(公告)日：2009-12-17

申请号：US12239889

申请日：2008-09-29

申请人： Jung-Fu Cheng ,  Tracy Fulghum ,  Douglas Cairns

发明人： Jung-Fu Cheng ,  Tracy Fulghum ,  Douglas Cairns

IPC分类号： H04L27/36 ,  H04L27/00 ,  H04L27/20

CPC分类号： H04L25/0236 ,  H04B2201/70701 ,  H04B2201/709727 ,  H04L1/0017 ,  H04L1/0041 ,  H04L1/0068 ,  H04L25/021 ,  H04L25/0226 ,  H04L25/03044 ,  H04L25/03324 ,  H04L25/061 ,  H04L27/0012 ,  H04L27/227 ,  H04L27/3455 ,  H04L27/3818 ,  H04L2001/0098 ,  H04L2025/03401 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2025/03509 ,  H04L2025/03796 ,  H04L2027/0061 ,  H04L2027/0093

摘要： A transmitter, channel coder, and method for coding and transmitting a sequence of symbols in a digital communication system utilizing soft pilot symbols. In one embodiment, the transmitter transmits a set of soft pilot symbols with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16 QAM or 64 QAM. The transmitter shares the modulation type and location (time/frequency/code) of the soft pilot symbols with a receiver. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols. In another embodiment, soft pilot symbols are inserted by low-level puncturing of channel encoded bits and replacing the punctured bits with known bit patterns.

摘要翻译： 用于使用软导频符号在数字通信系统中对符号序列进行编码和发送的发射机，信道编码器和方法。 在一个实施例中，发射机通过用低阶调制（诸如BPSK或QPSK）调制软导频符号，以较高阶调制方式调制剩余符号，从而发送具有比序列中的剩余符号更高的可靠性的一组软导频符号， 作为16 QAM或64 QAM。 发射机与接收机共享软导频符号的调制类型和位置（时间/频率/码）。 与传统的固定飞行员不同，软飞行员仍然携带一些数据。 此外，软导频器在建立解调高阶调制符号时必不可少的幅度参考是特别有用的。 在另一个实施例中，通过信道编码比特的低级删截插入软导频符号，并用已知的比特模式替换被删余的比特。

公开(公告)号：US20080115034A1

公开(公告)日：2008-05-15

申请号：US11936242

申请日：2007-11-07

申请人： Jung-fu Cheng

发明人： Jung-fu Cheng

IPC分类号： G06F11/10

CPC分类号： H03M13/2775 ,  H03M13/2739 ,  H03M13/2957 ,  H03M13/6525

摘要： A quadratic permutation polynomial (QPP) interleaver is described for turbo coding and decoding. The QPP interleaver has the form: Π(n)=f1n+f2n2 mod K, where the QPP coefficients f1 and f2. are designed to provide good error performance for a given block length K.

摘要翻译： 描述了用于turbo编码和解码的二次置换多项式（QPP）交织器。 QPP交织器具有以下形式：<？in-line-formula description =“In-line Formulas”end =“lead”？> Pi（n）= f <1> n + f ＆lt;＆lt; 2＆gt; mod K，<？in-line-formula description =“In-line Formulas”end =“tail”？>其中QPP系数f 1 和f＆gt; 2 。 被设计为为给定的块长度K提供良好的误差性能。

公开(公告)号：US20080104488A1

公开(公告)日：2008-05-01

申请号：US11553767

申请日：2006-10-27

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H03M13/03

CPC分类号： H04M15/00 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3972 ,  H03M13/413 ,  H04B2201/709727

摘要： In one or more embodiments, a method of processing a soft value sequence according to an iterative soft-input-soft-output (SISO) algorithm comprises carrying out sliding-window processing of the soft value sequence in a first iteration using first window placements and in a second iteration using second window placements, and varying the window placements between the first and second iterations. In at least one embodiment, a communication receiver circuit is configured to carry out iterative SISO processing, wherein it processes a soft value sequence using sliding windows, and wherein it varies window placements between one or more iterations. The communication receiver circuit comprises, for example, all or part of a turbo decoding circuit or other type of iterative block decoding circuit, an equalization and decoding circuit, a soft demodulation and decoding circuit, a multi-user detection and decoding circuit, or a multiple-input-multiple-output detection and decoding circuit.

摘要翻译： 在一个或多个实施例中，根据迭代软输入软输出（SISO）算法来处理软值序列的方法包括：使用第一窗口布局在第一次迭代中执行软值序列的滑动窗口处理;以及 在使用第二窗口布局的第二次迭代中，以及在第一和第二迭代之间改变窗口布局。 在至少一个实施例中，通信接收器电路被配置为执行迭代SISO处理，其中它使用滑动窗口处理软值序列，并且其中它改变一个或多个迭代之间的窗口布置。 通信接收电路例如包括turbo解码电路或其他类型的迭代块解码电路，均衡解码电路，软解调和解码电路，多用户检测和解码电路或全部或部分 多输入多输出检测和解码电路。

公开(公告)号：US07251770B2

公开(公告)日：2007-07-31

申请号：US10915134

申请日：2004-08-10

申请人： Gregory E. Bottomley ,  Rajaram Ramesh ,  Jung-Fu Cheng

发明人： Gregory E. Bottomley ,  Rajaram Ramesh ,  Jung-Fu Cheng

IPC分类号： H03M13/29 ,  H03M13/41

CPC分类号： H04L1/005 ,  H03M13/2957 ,  H03M13/2975 ,  H04L1/0066

摘要： A method and apparatus for decoding turbo encoded data. A first turbo decoding iteration is performed to produce a most likely sequence of symbols, each symbol having an amplitude value and a positive or negative sign. The sequence of symbols is error checked, and if an error is detected, the apparatus forms a next most likely sequence by reversing the positive or negative sign of the symbol having the smallest amplitude. If an error is again detected, additional sign reversals are performed on symbols with larger amplitudes, and on multiple symbols. Each modification is error checked. If none of the modifications produce an error-free sequence, and a maximum number of modifications are performed, the apparatus performs another turbo decoding iteration to produce another sequence of symbols. The process is then repeated until an error-free sequence is produced or a maximum number of iterations are performed.

摘要翻译： 用于对turbo编码数据进行解码的方法和装置。 执行第一turbo解码迭代以产生最可能的符号序列，每个符号具有振幅值和正号或负号。 符号序列被错误检查，并且如果检测到错误，则该装置通过反转具有最小幅度的符号的正号或负号来形成下一个最可能的序列。 如果再次检测到错误，则对具有较大幅度的符号和多个符号执行附加符号反转。 每个修改都被错误检查。 如果没有一个修改产生无错的序列，并且执行最大数量的修改，则该装置执行另一个turbo解码迭代以产生另一个符号序列。 然后重复该过程，直到产生无错序列或执行最大次数。