公开(公告)号：US08489969B2

公开(公告)日：2013-07-16

申请号：US13526651

申请日：2012-06-19

申请人： Fredrik Huss

发明人： Fredrik Huss

IPC分类号： G06F11/00

CPC分类号： H03M13/3994 ,  H03M13/09 ,  H03M13/175 ,  H03M13/4123 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0073

摘要： The present invention relates to channel decoding and provides ways and means for improved channel decoding of data frames. The frame has been channel encoded and transmitted to a receiver. The frame includes a part with information that is unknown to the receiver and another part with information for which the receiver generates at least one data hypothesis predicting its information content. The receiver performs a hypothesis-based decoding of the received encoded frame, wherein the at least one data hypothesis is used to improve a probability of successful decoding. The invention may advantageously be used to improve decoding of frames containing short control messages with fill bits, e.g. acknowledgement messages.

摘要翻译： 本发明涉及信道解码，并且提供了改进数据帧的信道解码的方式和手段。 该帧已被信道编码并传输到接收机。 该帧包括具有接收器未知的信息的部分，另一部分具有信息，其中接收器生成至少一个预测其信息内容的数据假设。 接收机对接收到的编码帧执行基于假设的解码，其中使用至少一个数据假设来提高成功解码的概率。 本发明可以有利地用于改善包含具有填充比特的短控制消息的帧的解码，例如， 确认消息。

公开(公告)号：US20090239585A1

公开(公告)日：2009-09-24

申请号：US12302999

申请日：2006-06-01

申请人： Fredrik Huss

发明人： Fredrik Huss

IPC分类号： H04L27/06 ,  H04M1/00

CPC分类号： H03M13/3994 ,  H03M13/09 ,  H03M13/175 ,  H03M13/4123 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0073

摘要： The present invention relates to channel decoding and provides ways and means for improved channel decoding of data frames. The frame has been channel encoded and transmitted to a receiver (3a). The frame includes a part (51, 53) with information that is unknown to the receiver and another part (54, 55) with information for which the receiver generates at least one data hypothesis predicting its information content. The receiver performs a hypothesis-based decoding (149) of the received encoded frame, wherein the at least one data hypothesis is used to improve a probability of successful decoding. The invention may advantageously be used to improve decoding of frames containing short control messages with fill bits, e.g. acknowledgement messages (17).

摘要翻译： 本发明涉及信道解码，并且提供了改进数据帧的信道解码的方式和手段。 该帧已被信道编码并被发送到接收机（3a）。 帧包括具有对于接收机未知的信息的部分（51,53）和具有信息的另一部分（54,55），其中接收器生成预测其信息内容的至少一个数据假设。 接收机执行接收的编码帧的基于假设的解码（149），其中使用至少一个数据假设来提高成功解码的概率。 本发明可以有利地用于改善包含具有填充比特的短控制消息的帧的解码，例如， 确认消息（17）。

公开(公告)号：US07373130B2

公开(公告)日：2008-05-13

申请号：US11105016

申请日：2005-04-13

申请人： Fredrik Huss

发明人： Fredrik Huss

IPC分类号： H04B1/10 ,  H04B17/00

CPC分类号： H04L25/0236 ,  H04B1/1027 ,  H04L25/0242 ,  H04L25/03305 ,  H04W16/14 ,  H04W56/00

摘要： Interference suppression in a receiver in a wireless network that utilizes training sequences for synchronization and channel estimation, wherein the training sequence of an interfering channel overlaps the training sequence of a desired channel to cause degraded channel estimation, by generating a channel estimate for a carrier part of a received signal; generating a residual signal where the carrier part has been removed from the received signal; generating covariance matrix estimates for interferer channel estimate candidates; selecting carrier and interferer channel estimates having the lowest energy in the covariance matrix; and, explicitly generating the selected interferer channel estimate.

摘要翻译： 在利用训练序列进行同步和信道估计的无线网络中的接收机中的干扰抑制，其中干扰信道的训练序列与期望信道的训练序列重叠以引起劣化的信道估计，通过生成用于载波部分的信道估计 的接收信号; 产生载波部分已从接收信号中去除的残留信号; 生成干扰信道估计候选的协方差矩阵估计; 选择在协方差矩阵中具有最低能量的载波和干扰信道估计; 并且明确地产生所选择的干扰信道估计。

公开(公告)号：US09374724B2

公开(公告)日：2016-06-21

申请号：US14355539

申请日：2011-11-03

申请人： Mats Åhlander ,  David Sandberg ,  Fredrik Huss ,  Pontus Arvidsson

发明人： Mats Åhlander ,  David Sandberg ,  Fredrik Huss ,  Pontus Arvidsson

IPC分类号： H04W72/12 ,  H04W24/06 ,  H04L25/02

CPC分类号： H04W24/06 ,  H04L25/0202 ,  H04L25/0224 ,  H04W72/1226

摘要： A method in a radio network node for estimating channel gain over frequencies of a bandwidth in a radio communications network. The radio network node measures a first channel gain based on a received power of a sounding reference signal over a first set of frequencies from a user equipment, which first set of frequencies is comprised in the frequencies of the bandwidth. Furthermore, the radio network node measures a second channel gain based on a received power of a received demodulation reference signal of a physical uplink shared channel over a second set of frequencies from the user equipment, which second set of frequencies is comprised in the frequencies of the bandwidth. The radio network node then estimates a third channel gain over the frequencies of the bandwidth based on the measured first channel gain and the measured second channel gain.

摘要翻译： 一种无线电网络节点中用于估计无线电通信网络中的带宽频率上的信道增益的方法。 无线电网络节点基于来自用户设备的第一组频率上的探测参考信号的接收功率来测量第一信道增益，该第一组频率包括在带宽的频率中。 此外，无线电网络节点基于来自用户设备的第二组频率上的物理上行链路共享信道的接收解调参考信号的接收功率测量第二信道增益，该第二组频率包括在 带宽。 无线电网络节点然后基于所测量的第一信道增益和所测量的第二信道增益来估计带宽频率上的第三信道增益。

公开(公告)号：US09071473B2

公开(公告)日：2015-06-30

申请号：US13229164

申请日：2011-09-09

申请人： Eliana Yepez ,  Jinliang Huang ,  Edward Mah ,  Fredrik Huss

发明人： Eliana Yepez ,  Jinliang Huang ,  Edward Mah ,  Fredrik Huss

IPC分类号： H04B17/00 ,  H04L25/02 ,  H04L27/26

CPC分类号： H04L25/0222 ,  H04L25/0224 ,  H04L27/2602

摘要： A method and system for selecting an algorithm for channel estimation in a wireless communication system are disclosed. According a parameter indicative of an accuracy of a channel estimation algorithm is determined. A selection between a first channel estimation algorithm and a second channel estimation algorithm is made based on the determined parameter.

摘要翻译： 公开了一种在无线通信系统中选择用于信道估计的算法的方法和系统。 根据指示信道估计算法的精度的参数被确定。 基于确定的参数进行第一信道估计算法和第二信道估计算法之间的选择。

公开(公告)号：US20150111515A1

公开(公告)日：2015-04-23

申请号：US14399222

申请日：2012-05-24

申请人： Youping Su ,  Alireza Nejatian ,  Fredrik Huss

发明人： Youping Su ,  Alireza Nejatian ,  Fredrik Huss

IPC分类号： H04B1/10

CPC分类号： H04B1/1027 ,  H04B1/525

摘要： A method in a base station is provided for reducing distortion of an uplink signal received in a receiver part (20) of the base station, said distortion being caused by intermodulation, IM, products. The method comprises: generating (106), from a transmitter source signal, a modeled signal of IM components, as nth order IM components of the transmitter source signal, n being an integer value of 2, 3, 4 and/or 5 etc., and detecting (110) IM products of the received uplink signal, the received uplink signal comprising UL traffic components and the IM products, by correlating the received uplink signal with the IM components of the modeled signal. The method further comprises producing (112) a cancellation signal based on the detected IM products of the received uplink signal, and subtracting (114) the cancellation signal from the received uplink signal. Also, a similar apparatus in a base station is provided.

摘要翻译： 提供了一种基站中的方法，用于减少在基站的接收机部分（20）中接收的上行链路信号的失真，所述失真是由互调，IM，乘积引起的。 该方法包括：从发射机源信号产生（106）IM分量的建模信号，作为发射机源信号的n阶IM分量，n是2,3,4和/或5等的整数值。 并且通过将接收到的上行链路信号与建模信号的IM分量相关联来检测（110）所接收的上行链路信号的IM产品，所接收的上行链路信号包括UL业务分量和IM产品。 该方法还包括基于检测到的接收到的上行链路信号的IM产物产生（112）消除信号，以及从接收到的上行链路信号中减去（114）消除信号。 此外，提供了基站中的类似装置。

公开(公告)号：US08699448B2

公开(公告)日：2014-04-15

申请号：US13513575

申请日：2009-12-09

申请人： Fredrik Lindqvist ,  Fredrik Huss

发明人： Fredrik Lindqvist ,  Fredrik Huss

IPC分类号： H04W4/00

CPC分类号： H04J11/0046

摘要： In a method of interference rejection combining (IRC) for mitigating interference in received signals in the frequency domain for a telecommunication system, selecting (S 10) a sub-group of frequencies of a received signal, determining (S20) a joint representation of a covariance matrix for the interference plus noise for at least one time slot of the received signal for the selected sub-group of frequencies, determining (S30) a channel estimate based on at least one pilot symbol of said at least one time slot. Finally, determining (S40) IRC coefficients in the frequency domain for each symbol of said at least one time slot based on said determined joint representation of the covariance matrix and said determined channel estimate.

摘要翻译： 在用于减轻电信系统的频域中的接收信号干扰的干扰抑制组合（IRC）的方法中，选择（S10）接收信号的一个子组的频率，确定（S20） 用于针对所选择的频率组的接收信号的至少一个时隙的干扰加噪声的协方差矩阵，基于所述至少一个时隙的至少一个导频符号来确定（S30）信道估计。 最后，基于所述确定的协方差矩阵的联合表示和所确定的信道估计，确定（S40）所述至少一个时隙的每个符号的频域中的IRC系数。

公开(公告)号：US20130003880A1

公开(公告)日：2013-01-03

申请号：US13170930

申请日：2011-06-28

申请人： Guoqiang Lu ,  Oskar Mauritz ,  Fredrik Huss ,  Henrik Back

发明人： Guoqiang Lu ,  Oskar Mauritz ,  Fredrik Huss ,  Henrik Back

IPC分类号： H04L27/00

CPC分类号： H04W56/0035 ,  H04J11/0079 ,  H04J2011/0096 ,  H04L27/2657 ,  H04L27/2686 ,  H04W24/08 ,  H04W56/001

摘要： A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.

公开(公告)号：US20120230218A1

公开(公告)日：2012-09-13

申请号：US13510271

申请日：2010-11-12

申请人： Oskar Mauritz ,  Fredrik Huss

发明人： Oskar Mauritz ,  Fredrik Huss

IPC分类号： H04W24/00 ,  H04W52/02

CPC分类号： H04L1/1607 ,  H04L2001/125

摘要： A method in a base station for detecting a HARQ-ACK codeword comprised in a signal received from a UE is provided. The base station knows HARQ-ACK codewords being possible to detect. The base station receives (401) a signal from the UE comprising a modulation symbol. The base station estimates (402) a SNR value for the received signal, and calculates (403) soft values for the modulation symbol. When the SNR value is lower than a predetermined threshold value and when the modulation symbol of the received signal comprises more than two bits per modulation symbol, the base station uses a first mode. The first mode comprises correlating (405) only the two first calculated soft values for the modulation symbol with the one or more known possible HARQ-ACK codewords. In other cases, i.e. when the first mode is not used, the base station uses a second mode. The second mode comprises correlating (408) all calculated soft values for the modulation symbol with the known possible HARQ-ACK codewords.

摘要翻译： 提供了一种用于检测包括在从UE接收的信号中的HARQ-ACK码字的基站中的方法。 基站知道可以检测的HARQ-ACK码字。 基站接收（401）包括调制符号的来自UE的信号。 基站估计（402）接收信号的SNR值，并计算（403）调制符号的软值。 当SNR值低于预定阈值时，并且当接收信号的调制符号包括每个调制符号多于两个比特时，基站使用第一模式。 第一模式包括（405）仅将调制符号的两个第一计算的软值与一个或多个已知的可能的HARQ-ACK码字相关联。 在其他情况下，即当不使用第一模式时，基站使用第二模式。 第二模式包括将调制符号的所有计算的软值与已知的可能的HARQ-ACK码字相关联（408）。

公开(公告)号：US08230306B2

公开(公告)日：2012-07-24

申请号：US12302999

申请日：2006-06-01

申请人： Fredrik Huss

发明人： Fredrik Huss

IPC分类号： G06F11/00

CPC分类号： H03M13/3994 ,  H03M13/09 ,  H03M13/175 ,  H03M13/4123 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0073

摘要： The present invention relates to channel decoding and provides ways and means for improved channel decoding of data frames. The frame has been channel encoded and transmitted to a receiver (3a). The frame includes a part (51, 53) with information that is unknown to the receiver and another part (54, 55) with information for which the receiver generates at least one data hypothesis predicting its information content. The receiver performs a hypothesis-based decoding (149) of the received encoded frame, wherein the at least one data hypothesis is used to improve a probability of successful decoding. The invention may advantageously be used to improve decoding of frames containing short control messages with fill bits, e.g. acknowledgement messages (17).

摘要翻译： 本发明涉及信道解码，并且提供了改进数据帧的信道解码的方式和手段。 该帧已被信道编码并被发送到接收机（3a）。 该帧包括具有对于接收机未知的信息的部分（51,53）和具有信息的另一部分（54,55），其中接收器生成预测其信息内容的至少一个数据假设。 接收机执行接收的编码帧的基于假设的解码（149），其中使用至少一个数据假设来提高成功解码的概率。 本发明可以有利地用于改善包含具有填充比特的短控制消息的帧的解码，例如， 确认消息（17）。