公开(公告)号：US09025430B2

公开(公告)日：2015-05-05

申请号：US13417781

申请日：2012-03-12

申请人： Jung-Fu Cheng ,  Yang Hu

发明人： Jung-Fu Cheng ,  Yang Hu

IPC分类号： H04J11/00 ,  H04W4/00 ,  H04L5/12 ,  H04L27/02 ,  H04L27/36 ,  H03C1/52 ,  H03D1/24 ,  H04L1/00 ,  H04L5/00

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，则将调制阶数设置为64四乘调制（64QAM）。

公开(公告)号：US08737496B2

公开(公告)日：2014-05-27

申请号：US12752471

申请日：2010-04-01

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

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

IPC分类号： H04K1/10

CPC分类号： H04L27/2647 ,  H04B17/336 ,  H04L5/0046 ,  H04L5/0091 ,  H04L27/2636

摘要： A receive signal processor jointly detects a signal-of-interest with one or more other signals. The signal-to-interference-plus-noise ratio for the signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest, computing per-subcarrier capacities for the subcarriers based on the per subcarrier signal to interference ratios, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers.

摘要翻译： 接收信号处理器通过一个或多个其它信号共同检测感兴趣的信号。 用于感兴趣信号的信号与干扰加噪声比通过计算携带感兴趣信号的多个子载波的每副载波信号与干扰加噪声比来确定 基于每个子载波信号与干扰比的子载波的子载波容量，以及基于子载波的每副载波容量计算副载波的总信噪比加噪声比。

公开(公告)号：US08532214B2

公开(公告)日：2013-09-10

申请号：US12828548

申请日：2010-07-01

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04B7/02

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B7/0413 ,  H04L25/0218 ,  H04L25/022 ,  H04L25/0232

摘要： A plurality of wireless channels link a transmitter and a receiver, each channel corresponding to a different transmit-receive antenna pair. Channel state information is estimated for the plurality of wireless channels by grouping the plurality of channels into one or more groups, each group including the channels associated with two or more collocated transmit and/or receive antennas. A set of delay tap values is iteratively estimated in the time domain for each group of channels so that the channels included in the same group are associated with the same delay tap values. A frequency domain channel response of each of the channels included in the same group of channels is estimated based on the set of delay tap values estimated for the group.

公开(公告)号：US08406326B2

公开(公告)日：2013-03-26

申请号：US12779106

申请日：2010-05-13

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

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

IPC分类号： H04K1/10

CPC分类号： H04W72/0413 ,  H04L1/0019 ,  H04L1/0028 ,  H04L1/20 ,  H04W72/042

摘要： The required bitrate for reporting channel state information from a network transceiver to the network is dramatically reduced, while maintaining fidelity of channel estimates, by exploiting prior channel estimates and the time correlation of channel response. For a selected set of sub-carriers, the transceiver estimates channel frequency response from pilot signals. The transceiver also predicts the frequency response for each selected sub-carrier, by multiplying a state vector comprising prior frequency response estimate and a coefficient vector comprising linear predictive coefficients. The predicted frequency response is subtracted from the estimated frequency response, and the prediction error is quantized and transmitted to the network. The network maintains a corresponding state vector and predictive coefficient vector, and also predicts a frequency response for each selected sub-carrier. The received prediction error is inverse quantized and subtracted from the predicted frequency response to yield a frequency response corresponding to that estimated at the transceiver.

摘要翻译： 通过利用先前的信道估计和信道响应的时间相关性，可以显着降低从网络收发器向网络报告信道状态信息所需的比特率，同时保持信道估计的保真度。 对于所选择的一组子载波，收发器估计来自导频信号的信道频率响应。 收发器还通过将包括先前频率响应估计的状态向量和包括线性预测系数的系数向量相乘来预测每个所选子载波的频率响应。 从估计的频率响应中减去预测的频率响应，并将预测误差量化并发送到网络。 网络维持相应的状态向量和预测系数向量，并且还预测每个选择的子载波的频率响应。 接收的预测误差被反量化，并从预测的频率响应中减去，以产生与在收发机处估计的频率响应相对应的频率响应。

公开(公告)号：US08375271B2

公开(公告)日：2013-02-12

申请号：US12739854

申请日：2008-10-23

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

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

IPC分类号： G06F11/00

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：US08271858B2

公开(公告)日：2012-09-18

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： H03M13/00

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：US20120002742A1

公开(公告)日：2012-01-05

申请号：US12828548

申请日：2010-07-01

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04B7/02

CPC分类号： H04W24/02 ,  H04B7/024 ,  H04B7/0413 ,  H04L25/0218 ,  H04L25/022 ,  H04L25/0232

摘要： A plurality of wireless channels link a transmitter and a receiver, each channel corresponding to a different transmit-receive antenna pair. Channel state information is estimated for the plurality of wireless channels by grouping the plurality of channels into one or more groups, each group including the channels associated with two or more collocated transmit and/or receive antennas. A set of delay tap values is iteratively estimated in the time domain for each group of channels so that the channels included in the same group are associated with the same delay tap values. A frequency domain channel response of each of the channels included in the same group of channels is estimated based on the set of delay tap values estimated for the group.

摘要翻译： 多个无线信道链接发射机和接收机，每个信道对应于不同的发射 - 接收天线对。 通过将多个信道分组成一个或多个组来估计多个无线信道的信道状态信息，每个组包括与两个或多个并置的发射和/或接收天线相关联的信道。 在每个通道组的时域中迭代地估计一组延迟抽头值，使得包括在同一组中的信道与相同的延迟抽头值相关联。 基于针对组估计的延迟抽头值的集合来估计包括在同一组信道组中的每个信道的频域信道响应。

公开(公告)号：US20110274198A1

公开(公告)日：2011-11-10

申请号：US13101531

申请日：2011-05-05

申请人： Jung-Fu Cheng

发明人： Jung-Fu Cheng

IPC分类号： H04B7/02 ,  H04L27/00

CPC分类号： H04L5/0053 ,  H03M13/05 ,  H03M13/13 ,  H03M13/27 ,  H03M13/2742 ,  H03M13/2757 ,  H03M13/6525 ,  H04L1/0071 ,  H04L1/0073 ,  H04W52/04

摘要： A method of transmitting control information from a wireless communication terminal to an access network includes generating control information comprising a plurality of control bits. The method also includes encoding the control bits using a block code that outputs an encoded bit sequence comprising encoded bits b(0), b(1), . . . , b(19) and dividing the encoded bits into a first group and a second group. The first group includes the encoded bits {b(0), b(1), b(2), b(3), b(4), b(6), b(7), b(8), b(13), b(19)} and the second group includes the encoded bits {b(5), b(9), b(10), 6(11), b(12), b(14), b(15), b(16), b(17), b(18)}. The method further includes transmitting the first group of encoded bits on a first set of carriers and transmitting the second group of encoded bits on a second set of carriers having different frequencies from the first set of carriers.

摘要翻译： 从无线通信终端向接入网发送控制信息的方法包括生成包含多个控制位的控制信息。 该方法还包括使用输出包含编码比特b（0），b（1）的编码比特序列的块码来对控制比特进行编码。 。 。 ，b（19），并将编码比特分成第一组和第二组。 第一组包括编码比特{b（0），b（1），b（2），b（3），b（4），b（6），b（7），b（8） 并且第二组包括编码比特{b（5），b（9），b（10），6（11），b（12），b（14），b ），b（16），b（17），b（18）}。 该方法还包括在第一载波集合上传送第一组编码比特，并在第二载波集合具有不同频率的第二载波组上传送第二组编码比特。

公开(公告)号：US20110261872A1

公开(公告)日：2011-10-27

申请号：US12764247

申请日：2010-04-21

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

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

IPC分类号： H04B17/00

CPC分类号： H04L27/2647 ,  H04J11/004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L5/0046 ,  H04L25/0204 ,  H04L25/0224 ,  H04L27/2636

摘要： A receive signal processor jointly detects two or more symbols in a signal-of-interest in the presence of one or more other MIMO signals. The signal-to-interference-plus-noise ratio for each signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers allocated to the signals-of-interest, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier signal-to-interference-plus-noise ratios of the subcarriers. A controller determines one or more transmission formats for uplink transmissions based on the signal-to-interference-plus-noise ratios. The process of computing per-subcarrier signal-to-interference-plus-noise ratio reflects the amount of MIMO interference already cancelled or still remaining in the signal arriving at the joint detector.

摘要翻译： 接收信号处理器在存在一个或多个其它MIMO信号的情况下联合检测感兴趣的信号中的两个或多个符号。 通过对分配给感兴趣信号的多个子载波计算每副载波信号与干扰加噪声比来确定每个感兴趣信号的信号与干扰加噪声比，以及 基于子载波的每副载波信号与干扰加噪声比，计算子载波的总信噪比加噪声比。 控制器基于信号与干扰加噪声比确定用于上行链路传输的一种或多种传输格式。 计算每子载波信号与干扰加噪声比的过程反映已经消除或仍然存在于到达联合检测器的信号中的MIMO干扰量。

公开(公告)号：US20110243283A1

公开(公告)日：2011-10-06

申请号：US12752471

申请日：2010-04-01

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

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

IPC分类号： H04B1/10

CPC分类号： H04L27/2647 ,  H04B17/336 ,  H04L5/0046 ,  H04L5/0091 ,  H04L27/2636

摘要： A receive signal processor jointly detects a signal-of-interest with one or more other signals. The signal-to-interference-plus-noise ratio for the signal-of-interest is determined by computing per-subcarrier signal-to-interference-plus-noise ratios for a plurality of subcarriers carrying the signal-of-interest, computing per-subcarrier capacities for the subcarriers based on the per subcarrier signal to interference ratios, and computing a total signal-to-interference-plus-noise ratio for the subcarriers based on the per-subcarrier capacities of the subcarriers.

摘要翻译： 接收信号处理器通过一个或多个其它信号共同检测感兴趣的信号。 用于感兴趣信号的信号与干扰加噪声比通过计算携带感兴趣信号的多个子载波的每副载波信号与干扰加噪声比来确定 基于每个子载波信号与干扰比的子载波的子载波容量，以及基于子载波的每副载波容量计算副载波的总信噪比加噪声比。