公开(公告)号：US20110055667A1

公开(公告)日：2011-03-03

申请号：US12553324

申请日：2009-09-03

申请人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

发明人： Yi-Pin Eric Wang ,  Jung-Fu Cheng

IPC分类号： H03M13/05 ,  G06F11/10

CPC分类号： H04L1/005

摘要： Techniques for generating soft values for parity bits in a convolutional decoding process are disclosed. An exemplary method comprises, for each of at least one iteration in at least one soft-input soft-output decoder, calculating intermediate probability values for each possible transition between a first plurality of candidate decoder states at a first time and a second plurality of candidate decoder states at a second time. Two or more partial sums are then computed from the intermediate probability values, wherein the partial sums correspond to possible combinations of two or more systematic bits, two or more parity bits, or at least one systematic bit and at least one parity bit. Soft values, such as log-likelihood values, are then estimated for each of at least one systematic bit and at least one parity bit of the received communications data corresponding to the interval between the first and second times, based on the partial sums.

摘要翻译： 公开了在卷积解码过程中产生用于奇偶校验位的软值的技术。 一种示例性方法包括对于至少一个软输入软输出解码器中的至少一次迭代中的每一个，为第一时间的第一多个候选解码器状态和第二多个候选者之间的每个可能的转换计算中间概率值 解码器第二次状态。 然后从中间概率值计算两个或多个部分和，其中部分和对应于两个或多个系统位，两个或更多个奇偶校验位或至少一个系统位和至少一个奇偶校验位的可能组合。 然后，基于部分和，针对对应于第一和第二时间之间的间隔的接收到的通信数据的至少一个系统位和至少一个奇偶校验位中的每一个估计诸如对数似然值的软值。

公开(公告)号：US20100271931A1

公开(公告)日：2010-10-28

申请号：US12555973

申请日：2009-09-09

申请人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

发明人： Jung-Fu Cheng ,  Kambiz Zangi ,  Dennis Hui ,  Leonid Krasny

IPC分类号： H04J11/00 ,  H04B17/00

CPC分类号： H04B17/0047 ,  H04B7/024 ,  H04B7/0626 ,  H04B7/0639 ,  H04B17/336 ,  H04B17/364 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/20 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0224

摘要： Accurate downlink channel estimates are calculated based on infrequently transmitted Channel State Information (CSI) feedback data from a UE 20. A plurality of non-uniformly spaced digital CSI feedback samples, representing the frequency response of a downlink communication channel, is received from the UE. The received CSI feedback samples are demodulated and inverse quantized. A time domain tap delay channel model is generated from the inverse quantized CSI feedback samples. The time domain tap delay channel model may be frequency-transformed to obtain a reconstructed frequency response of the downlink communication channel in the frequency domain. Alternatively, channel delays may be estimated based on prior delays and/or known references signals transmitted on the uplink. Channel estimates between CSI reporting instances may be predicted, such as by a sample & hold or a linear predictor. The delays may be presumed fixed, and Kalman filter coefficients evolved over time.

摘要翻译： 基于来自UE20的不频繁发送的信道状态信息（CSI）反馈数据来计算准确的下行链路信道估计。从UE接收表示下行链路通信信道的频率响应的多个非均匀间隔的数字CSI反馈样本 。 接收的CSI反馈样本被解调和反量化。 时域抽头延迟信道模型是从逆向量化的CSI反馈样本生成的。 时域抽头延迟信道模型可以被频率变换以获得频域中下行链路通信信道的重构频率响应。 或者，可以基于在上行链路上发送的先前的延迟和/或已知的参考信号来估计信道延迟。 可以预测CSI报告实例之间的信道估计，例如通过采样和保持或线性预测器。 可以推测延迟是固定的，并且卡尔曼滤波器系数随时间演化。

公开(公告)号：US20100074195A1

公开(公告)日：2010-03-25

申请号：US12506057

申请日：2009-07-20

申请人： Jung-Fu Cheng ,  Yang Hu

发明人： Jung-Fu Cheng ,  Yang Hu

IPC分类号： H04W72/00

CPC分类号： H04L1/0005 ,  H04L1/0003 ,  H04L1/0011 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0058

摘要： A system, method and node for modulation and coding scheme adjustment for a Long Term Evolution (LTE) shared Data Channel. The method determines an actual number of orthogonal frequency division multiplexing (OFDM) symbols, NOS utilized for the shared Data Channel. A modulation order for transmission of data on the shared Data Channel is increased when the actual number of OFDM symbols NOS is less than 11 and decreased when NOS is more than 11. A modulation and coding scheme field (IMCS) of a downlink control information of the shared Data Channel may also be determined. If 0≦IMCS+11−NOS≦28, the modulation order is modified by utilizing a factor of (IMCS+11−NOS) in a standardized modulation scheme. If it is determined that IMCS+11−NOS 28, the modulation order is set to 64 Quadtrative Amplitude Modulation (64QAM).

摘要翻译： 用于长期演进（LTE）共享数据信道的调制和编码方案调整的系统，方法和节点。 该方法确定正交频分复用（OFDM）符号的实际数量，用于共享数据信道的NOS。 当OFDM符号的实际数目NOS小于11时，在共享数据信道上传输数据的调制顺序增加，当NOS大于11时，调制顺序减小。一种下行链路控制信息的调制和编码方案字段（IMCS） 也可以确定共享数据信道。 如果0＆nlE; IMCS + 11-NOS＆nlE; 28，通过在标准化调制方案中利用因子（IMCS + 11-NOS）修改调制阶数。 如果确定IMCS + 11-NOS <0，则将调制阶数设置为正交相移键控（QPSK）。 如果确定IMCS + 11-NOS> 28，则调制阶数被设置为64 Quadrual Amplitude Modulation（64QAM）。

公开(公告)号：US20100050059A1

公开(公告)日：2010-02-25

申请号：US12491581

申请日：2009-06-25

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H03M13/03 ,  G06F11/10 ,  H03M13/27

CPC分类号： H04L1/0041 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2778 ,  H03M13/2789 ,  H03M13/3938 ,  H03M13/6362 ,  H03M13/6508 ,  H03M13/6525

摘要： A system, method and node for unambiguous encoding of Physical Downlink Control Channel (PDCCH) channels in a Long Term Evolution (LTE) telecommunications system to remove detection errors. The method includes the step of modifying a size of a circular buffer by excluding at least one coded bit from the circular buffer. The circular buffer collects interleaved bits from a PDCCH payload having a plurality of bits. The PDCCH payload is encoded with a convolutional code. The bits of the PDCCH payload are then interleaved. The interleaved bits are collected into the modified circular buffer. The bits are then selected from the modified circular buffer for transmission.

摘要翻译： 用于长期演进（LTE）电信系统中的物理下行链路控制信道（PDCCH）信道的明确编码的系统，方法和节点，以消除检测错误。 该方法包括通过从循环缓冲器排除至少一个编码位来修改循环缓冲器的大小的步骤。 循环缓冲器从具有多个比特的PDCCH有效载荷收集交织比特。 PDCCH的有效载荷用卷积码进行编码。 然后将PDCCH有效载荷的比特交织。 交织的比特被收集到修改的循环缓冲器中。 然后从修改的循环缓冲器中选择位以进行传输。

公开(公告)号：US20090238066A1

公开(公告)日：2009-09-24

申请号：US12406256

申请日：2009-03-18

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04J1/16 ,  H04L1/18 ,  G08C25/02 ,  G06F11/10 ,  G06F11/07

CPC分类号： H04L1/0067 ,  H04L1/0071 ,  H04L1/1819 ,  H04L1/1893

摘要： Improvements in the performance of HARQ operation are achieved by considering two channel coding parameters, the number of filler bits F and the number of dummy bits ND, in the selection of the retransmission settings for HARQ operation. In one exemplary embodiment, an optimal RV setting for the retransmission is selected based on the number of filler bits F and the number of dummy bits ND. In another exemplary embodiment, an address offset to the RV starting point for a selected RV setting is selected based on the number of filler bits F and the number of dummy bits ND.

摘要翻译： 通过在选择HARQ操作的重传设置中考虑两个信道编码参数，填充比特数F和伪比特数ND来实现HARQ操作的性能的改善。 在一个示例性实施例中，基于填充比特数F和伪比特数ND来选择用于重传的最佳RV设置。 在另一个示例性实施例中，基于填充比特数F和伪比特数ND来选择对于所选RV设置的RV起始点的地址偏移。

公开(公告)号：US07339980B2

公开(公告)日：2008-03-04

申请号：US10795101

申请日：2004-03-05

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

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

IPC分类号： H04B1/00

CPC分类号： H04B1/707 ,  H04B2201/709727

摘要： A receiver includes a receiver circuit that decodes multiple signals of interest contained in a composite received signal. The receiver comprises a plurality of successive signal detection stages to detect respective signals contained in the composite received signal. Each detection circuit comprises at least one Generalized RAKE combining circuit and generates a detected signal at an output. Each but the last stage further comprises a signal regeneration circuit that cancels the signal of interest detected by that stage from a stage input signal provided to the next stage such that successive detection of the signals of interest benefits from cumulative cancellation of the previously detected signals.

摘要翻译： 接收机包括对包含在复合接收信号中的感兴趣的多个信号进行解码的接收机电路。 接收机包括多个连续的信号检测级，以检测包含在复合接收信号中的各个信号。 每个检测电路包括至少一个通用RAKE组合电路，并在输出端产生检测信号。 除了最后阶段之外，每个除了最后阶段还包括信号再生电路，该信号再生电路从提供给下一级的级输入信号中消除由该级检测到的感兴趣的信号，使得感兴趣的信号的连续检测从先前检测到的信号的累积消除中获益。

公开(公告)号：US20070275665A1

公开(公告)日：2007-11-29

申请号：US11438921

申请日：2006-05-23

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 ,  H04B7/00

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：US20070165576A1

公开(公告)日：2007-07-19

申请号：US11275388

申请日：2005-12-29

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

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

IPC分类号： H04B7/216

CPC分类号： H04B7/0691 ,  H04B7/0413 ,  H04J13/0003

摘要： A control channel for MIMO users operating in conjunction with an HS-DSCH system shares channelization codes with an HS-SCCH control channel. MIMO control channel information can be signaled from a transmit antenna selected based on information produced by the intended recipient. The modulation format used by a MIMO control channel can be selected based on the number of antenna streams in the corresponding MIMO data transmission.

摘要翻译： 与HS-DSCH系统结合操作的MIMO用户的控制信道与HS-SCCH控制信道共享信道化码。 MIMO控制信道信息可以从根据预期接收者产生的信息选择的发射天线发出信号。 可以基于在相应的MIMO数据传输中的天线流的数量来选择由MIMO控制信道使用的调制格式。

公开(公告)号：US20070141994A1

公开(公告)日：2007-06-21

申请号：US11275148

申请日：2005-12-15

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04B7/00

CPC分类号： H04L1/0026 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2602

摘要： Multi-carrier broadband wireless communication can be supported by providing identification information that identifies a group of carrier frequencies that an intended recipient of a transmission has selected for use in the transmission. A modulation and coding scheme for use in transmitting on the selected group of carrier frequencies is selected based on communication quality information indicative of communication quality associated with transmitting on the selected group of carrier frequencies. Transmission on the selected group of carrier frequencies is performed according to the selected modulation and coding scheme.

摘要翻译： 多载波宽带无线通信可以通过提供标识信息来支持，识别信息标识传输的预期接收者选择用于传输的一组载波频率。 基于指示与所选择的载波频率组上的发送相关联的通信质量的通信质量信息来选择用于在所选择的载波频率组上进行发送的调制和编码方案。 根据选择的调制和编码方案来执行所选择的载波频率组上的传输。

公开(公告)号：US20060023687A1

公开(公告)日：2006-02-02

申请号：US10900241

申请日：2004-07-27

申请人： Jung-Fu Cheng ,  Yi-Pin Wang

发明人： Jung-Fu Cheng ,  Yi-Pin Wang

IPC分类号： H04B7/216

CPC分类号： H04B1/707 ,  H04B2201/70701 ,  H04J13/00 ,  H04J13/16

摘要： A method, system, and apparatus for transferring new information on a dedicated physical channel (DPCH) from a base station to a user equipment (UE) terminal in a radio telecommunication system. A downlink signal containing the information, such as an ACK/NACK signal, is bit-level spread across one or more time slots utilizing a spreading sequence having good auto-correlation and cross-correlation properties with the DPCH. The spread downlink signal is then combined with a DPCH signal to form a combined signal, and the combined signal is spread utilizing a channelization code already assigned to the DPCH. The spread, combined signal is then transmitted to the UE terminal, which separately decodes the downlink signal to extract the information. The UE terminal then determines effects that the downlink signal had on the received DPCH signal, and subtracts the contribution of the downlink signal from the DPCH signal prior to decoding the DPCH signal.

摘要翻译： 一种用于在专用物理信道（DPCH）上从基站向无线电电信系统中的用户设备（UE）终端传送新信息的方法，系统和装置。 包含诸如ACK / NACK信号的信息的下行链路信号是利用具有与DPCH的良好自相关和互相关属性的扩展序列在一个或多个时隙上进行位级扩展。 然后将扩展的下行链路信号与DPCH信号组合以形成组合信号，并且使用已经分配给DPCH的信道化码来扩展组合的信号。 然后将扩展的组合信号发送到UE终端，UE终端单独解码下行链路信号以提取信息。 然后，UE终端确定下行链路信号对接收到的DPCH信号的影响，并在解码DPCH信号之前从DPCH信号中减去下行链路信号的贡献。