专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070263712A1 System and method of calculating noise variance 失效
标题翻译：噪声方差计算系统和方法
公开(公告)号：US20070263712A1
公开(公告)日：2007-11-15
申请号：US11453439
申请日：2006-06-14
申请人： Fuyun Ling , Thomas Sun , Raghuraman Krisnamoorthi , Durk L. van Veen , Murali Ramaswamy Chari
发明人： Fuyun Ling , Thomas Sun , Raghuraman Krisnamoorthi , Durk L. van Veen , Murali Ramaswamy Chari
IPC分类号： H04B3/46 , H04Q1/20 , H04B17/00
CPC分类号： H04L27/38 , H04B17/101 , H04B17/18 , H04L1/20 , H04L25/022
摘要： The claimed subject matter relates to estimating noise variance associated with a transmitter. For example, the noise variance can be estimated in connection with determining performance parameters associated with a transmitter. Determining noise variance can include the acts of estimating phase alteration of a received signal through utilization of a least squares-based phase estimation algorithm. Determining noise variance can also include the act of determining an unbiased estimation of noise variance as a function of the estimated phase alteration.
摘要翻译：所要求保护的主题涉及估计与发射机相关的噪声方差。例如，可以结合确定与发射机相关联的性能参数来估计噪声方差。确定噪声方差可以包括通过利用基于最小平方的相位估计算法来估计接收信号的相位变化的动作。确定噪声方差还可以包括确定噪声方差的无偏估计作为估计相位变化的函数的行为。

2. 发明授权

US07693231B2 System and method of calculating noise variance 失效
标题翻译：噪声方差计算系统和方法
公开(公告)号：US07693231B2
公开(公告)日：2010-04-06
申请号：US11453439
申请日：2006-06-14
申请人： Fuyun Ling , Thomas Sun , Raghuraman Krisnamoorthi , Durk L. van Veen , Murali Ramaswamy Chari
发明人： Fuyun Ling , Thomas Sun , Raghuraman Krisnamoorthi , Durk L. van Veen , Murali Ramaswamy Chari
IPC分类号： H04L27/00
CPC分类号： H04L27/38 , H04B17/101 , H04B17/18 , H04L1/20 , H04L25/022
摘要： The claimed subject matter relates to estimating noise variance associated with a transmitter. For example, the noise variance can be estimated in connection with determining performance parameters associated with a transmitter. Determining noise variance can include the acts of estimating phase alteration of a received signal through utilization of a least squares-based phase estimation algorithm. Determining noise variance can also include the act of determining an unbiased estimation of noise variance as a function of the estimated phase alteration.
摘要翻译：所要求保护的主题涉及估计与发射机相关的噪声方差。例如，可以结合确定与发射机相关联的性能参数来估计噪声方差。确定噪声方差可以包括通过利用基于最小平方的相位估计算法来估计接收信号的相位变化的动作。确定噪声方差还可以包括确定噪声方差的无偏估计作为估计相位变化的函数的行为。

3. 发明授权

US07733968B2 Evaluation of transmitter performance 失效
标题翻译：发射机性能评估
公开(公告)号：US07733968B2
公开(公告)日：2010-06-08
申请号：US11361085
申请日：2006-02-22
申请人： Fuyun Ling , Durk L. Van Veen , Murali Ramaswamy Chari , Thomas Sun
发明人： Fuyun Ling , Durk L. Van Veen , Murali Ramaswamy Chari , Thomas Sun
IPC分类号： H04L27/28
CPC分类号： H04L5/023 , H04B17/13 , H04B17/391 , H04L25/022 , H04L25/0224 , H04L25/0232 , H04L27/0012
摘要： Systems and methodologies are described that facilitate monitoring transmitter performance in a wireless communication environment. A signal analyzer can be used to sample the output of a transmitter and the sampled signal can be propagated to a processor. The processor can generate frequency domain channel estimates for the subcarriers. If the transmitted modulation symbols are unknown, the processor can determine the modulation symbols and use the determined modulation symbols to calculate the channel estimates. The channel estimates can be averaged and used to generate various metrics to evaluate the transmitter performance.
摘要翻译：描述了便于在无线通信环境中监视发射机性能的系统和方法。信号分析仪可用于对发射机的输出采样，采样信号可以传播到处理器。处理器可以产生子载波的频域信道估计。如果发送的调制符号是未知的，则处理器可以确定调制符号并使用确定的调制符号来计算信道估计。信道估计可以被平均化并用于生成各种度量以评估发射机的性能。

4. 发明申请

US20070070877A1 Modulation type determination for evaluation of transmitter performance 审中-公开
标题翻译：用于评估发射机性能的调制类型确定
公开(公告)号：US20070070877A1
公开(公告)日：2007-03-29
申请号：US11361088
申请日：2006-02-22
申请人： Thomas Sun , Durk Van Veen , Fuyun Ling , Murali Ramaswamy Chari
发明人： Thomas Sun , Durk Van Veen , Fuyun Ling , Murali Ramaswamy Chari
IPC分类号： H04J11/00
CPC分类号： H04L27/0012 , H04L25/0206 , H04L25/022 , H04L25/0232 , H04L27/2601 , H04L27/2647
摘要： Systems and methodologies are described that facilitate monitoring transmitter performance in a wireless communication environment. If the received modulation symbols are unknown during transmitter monitoring, it may be necessary to determine the modulation symbols for each subcarrier. The modulation types can be evaluated over a subset of subcarriers having a consistent modulation type, to reduce the possibility of an erroneous modulation type determination to an extremely low level. A metric can be generated for each modulation type that indicates the likelihood of a particular modulation type for the subset of subcarriers. The modulation type can be selected based upon the metric and modulation symbols consistent with the modulation type can be used for the subset of subcarriers.
摘要翻译：描述了便于在无线通信环境中监视发射机性能的系统和方法。如果在发射机监控期间接收到的调制符号是未知的，则可能需要确定每个子载波的调制符号。调制类型可以在具有一致调制类型的子载波的子集上进行评估，以将错误调制类型确定的可能性降低到非常低的水平。可以为指示子载波子集的特定调制类型的可能性的每种调制类型生成度量。可以基于度量来选择调制类型，并且可以将与调制类型一致的调制符号用于子载波的子集。

5. 发明授权

US08612820B2 Apparatus and methods for interleaving in a forward link only system 失效
标题翻译：仅在前向链路系统中交织的装置和方法
公开(公告)号：US08612820B2
公开(公告)日：2013-12-17
申请号：US12756917
申请日：2010-04-08
申请人： Durk L. van Veen , Murali R. Chari , Thomas Sun
发明人： Durk L. van Veen , Murali R. Chari , Thomas Sun
IPC分类号： G06F11/00
CPC分类号： H03M13/2771 , H03M13/2703 , H03M13/271 , H03M13/2735 , H03M13/296 , H03M13/6561 , H04L1/0065 , H04L1/0066 , H04L1/0071
摘要： Methods and devices for encoding and interleaving data packets for broadcast and for de-interleaving and decoding data packets in a communication system eliminate detrimental biasing effects by using pseudo-random M-sequence bit encoding as part of the turbo encoding and decoding. The use of pseudo-random M-sequence bit encoding mitigates biasing effects that may otherwise be introduced if conventional r-c interleaving is applied to long turbo encoded data which would degrade reception in the presence of broadcast interference.
摘要翻译：用于编码和交织用于广播的数据分组和用于在通信系统中解交织和解码数据分组的数据分组的方法和装置通过使用伪随机M序列比特编码作为turbo编码和解码的一部分来消除有害的偏置效应。伪随机M序列比特编码的使用减轻了偏移效应，如果传统的r-c交织被应用于在存在广播干扰的情况下会降低接收的长turbo编码数据的情况下可能引入偏置效应。

6. 发明申请

US20100260161A1 APPARATUS AND METHODS FOR INTERLEAVING IN A FORWARD LINK ONLY SYSTEM 失效
标题翻译：用于在前向链路系统中交互的装置和方法
公开(公告)号：US20100260161A1
公开(公告)日：2010-10-14
申请号：US12756917
申请日：2010-04-08
申请人： DURK L. VAN VEEN , Murali R. Chari , Thomas Sun
发明人： DURK L. VAN VEEN , Murali R. Chari , Thomas Sun
IPC分类号： H04B7/216
CPC分类号： H03M13/2771 , H03M13/2703 , H03M13/271 , H03M13/2735 , H03M13/296 , H03M13/6561 , H04L1/0065 , H04L1/0066 , H04L1/0071
摘要： Methods and devices for encoding and interleaving data packets for broadcast and for de-interleaving and decoding data packets in a communication system eliminate detrimental biasing effects by using pseudo-random M-sequence bit encoding as part of the turbo encoding and decoding. The use of pseudo-random M-sequence bit encoding mitigates biasing effects that may otherwise be introduced if conventional r-c interleaving is applied to long turbo encoded data which would degrade reception in the presence of broadcast interference.
摘要翻译：用于编码和交织用于广播的数据分组和用于在通信系统中解交织和解码数据分组的数据分组的方法和装置通过使用伪随机M序列比特编码作为turbo编码和解码的一部分来消除有害的偏置效应。伪随机M序列比特编码的使用减轻了偏移效应，如果传统的r-c交织被应用于在存在广播干扰的情况下会降低接收的长turbo编码数据的情况下可能引入偏置效应。

7. 发明授权

US08640012B2 Communication signal decoding with iterative cooperation between inner and outer codes 有权
标题翻译：通信信号解码与内部和外部代码之间的迭代协作
公开(公告)号：US08640012B2
公开(公告)日：2014-01-28
申请号：US12430719
申请日：2009-04-27
申请人： Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Jing Jiang
发明人： Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Jing Jiang
IPC分类号： G06F11/00
CPC分类号： H03M13/112 , H03M13/1111 , H03M13/1117 , H03M13/1191 , H03M13/1515 , H03M13/152 , H03M13/19 , H03M13/23 , H03M13/2966 , H03M13/658 , H04L1/005 , H04L1/0064
摘要： Received communication signals may be decoded according to a combined, iterative inner code—outer code decoding technique. The inner code decoding is based on information produced by the outer code decoding.
摘要翻译：接收到的通信信号可以根据组合的迭代内码外码解码技术进行解码。内码解码是基于由外码解码产生的信息。

8. 发明申请

US20090271686A1 COMMUNICATION SIGNAL DECODING WITH ITERATIVE COOPERATION BETWEEN TURBO AND REED-SOLOMON DECODING 审中-公开
标题翻译：通信信号与涡轮机和解耦器之间的迭代合作解码
公开(公告)号：US20090271686A1
公开(公告)日：2009-10-29
申请号：US12165659
申请日：2008-07-01
申请人： Jing Jiang , Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Kent Walker
发明人： Jing Jiang , Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Kent Walker
IPC分类号： H03M13/15 , G06F11/10
CPC分类号： H03M13/112 , H03M13/1111 , H03M13/1117 , H03M13/1191 , H03M13/1515 , H03M13/152 , H03M13/19 , H03M13/23 , H03M13/2966 , H03M13/658 , H04L1/005 , H04L1/0064
摘要： Received communication signals may be decoded according to a combined turbo-RS (Reed-Solomon) decoding technique. The turbo decoding is based on information produced by the RS decoding.
摘要翻译：接收的通信信号可以根据组合的turbo-RS（里德 - 所罗门）解码技术进行解码。 turbo解码基于由RS解码产生的信息。

9. 发明申请

US20070071122A1 Evaluation of transmitter performance 失效
标题翻译：发射机性能评估
公开(公告)号：US20070071122A1
公开(公告)日：2007-03-29
申请号：US11361085
申请日：2006-02-22
申请人： Fuyun Ling , Durk Van Veen , Murali Chari , Thomas Sun
发明人： Fuyun Ling , Durk Van Veen , Murali Chari , Thomas Sun
IPC分类号： H04K1/10
CPC分类号： H04L5/023 , H04B17/13 , H04B17/391 , H04L25/022 , H04L25/0224 , H04L25/0232 , H04L27/0012
摘要： Systems and methodologies are described that facilitate monitoring transmitter performance in a wireless communication environment. A signal analyzer can be used to sample the output of a transmitter and the sampled signal can be propagated to a processor. The processor can generate frequency domain channel estimates for the subcarriers. If the transmitted modulation symbols are unknown, the processor can determine the modulation symbols and use the determined modulation symbols to calculate the channel estimates. The channel estimates can be averaged and used to generate various metrics to evaluate the transmitter performance.
摘要翻译：描述了便于在无线通信环境中监视发射机性能的系统和方法。信号分析仪可用于对发射机的输出采样，采样信号可以传播到处理器。处理器可以产生子载波的频域信道估计。如果发送的调制符号是未知的，则处理器可以确定调制符号并使用确定的调制符号来计算信道估计。信道估计可以被平均化并用于生成各种度量以评估发射机的性能。

10. 发明申请

US20060178755A1 Bit log likelihood ratio evaluation 失效
标题翻译：位对数似然比评估
公开(公告)号：US20060178755A1
公开(公告)日：2006-08-10
申请号：US11330652
申请日：2006-01-11
申请人： Fuyun Ling , Seong Chung , Jinxia Bai , Thomas Sun
发明人： Fuyun Ling , Seong Chung , Jinxia Bai , Thomas Sun
IPC分类号： G05B15/00
CPC分类号： H04L27/3488 , H04L1/0045 , H04L1/0065 , H04L1/0066 , H04L27/2604 , H04L2001/0098
摘要： A system and method are provided for generating bit log likelihood ratio (LLR) values for two-layered Quadrature Phase-Shift Keying (QPSK) turbo decoding in a wireless communications user terminal (UT). The method includes receiving a two-layered QPSK signal with an energy ratio that is unknown, but typically defined as either k12 or k22. The method selects a mismatched energy ratio (k2) between k12 and k22, and generating bit LLR values for two-layered QPSK turbo decoding, using the mismatched k2 energy ratio. For example, if the received two-layered QPSK signal is known to have an energy ratio of about 4 or about 6.25. Then, k2 is selected to be about 5.0625. Alternately stated, the mismatched k2 energy ratio in selected by determining the approximate midpoint between k12 and k22.
摘要翻译：提供了一种用于在无线通信用户终端（UT）中生成用于双层正交相移键控（QPSK）turbo解码的比特对数似然比（LLR）值的系统和方法。该方法包括以未知的能量比接收两层QPSK信号，但通常被定义为k1≤2或k2≥2。该方法选择k1 <2> 2和k2 <2>之间的不匹配能量比（k <2> 2），并为双层QPSK涡轮增益产生位LLR值使用不匹配的k <2>能量比进行解码。例如，如果已知所接收的两层QPSK信号具有约4或约6.25的能量比。然后，选择k <2>为约5.0625。或者说，通过确定k1 <2> 2和k2 <2>之间的近似中点，所选择的不匹配的k 2 2能量比。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式