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1. 发明申请

US20130308700A1 Method and System for Communicating Multimedia Using Reconfigurable Rateless Codes and Decoding In-Process Status Feedback 有权
标题翻译：使用可重配置无线代码通信多媒体的方法和系统，并解码进程内状态反馈
公开(公告)号：US20130308700A1
公开(公告)日：2013-11-21
申请号：US13475350
申请日：2012-05-18
申请人： Toshiaki Koike-Akino , Jesper H. Soerensen , Philip Orlik
发明人： Toshiaki Koike-Akino , Jesper H. Soerensen , Philip Orlik
IPC分类号： H04N7/26
CPC分类号： H04N19/164 , H03M13/373 , H03M13/3761
摘要： A method and system use capacity-approaching rateless code to communicate multimedia data even with very short codewords, such as 64 bits or less, via erasure and noise channels. The method provides a way to design the edge degree distribution of rateless codes for any arbitrary channel. Based on an equivalent metric of decoding behavior in any channels, the degree distribution of a rateless code such as Luby-transform codes and raptor codes is optimized based on in-process status of decoding. A regularized least-squares optimization is used to avoid erroneous decoding. Multiple feedbacks can further improve the performance.
摘要翻译：一种方法和系统使用容量接近的无码代码即使通过擦除和噪声信道的诸如64位或更少的非常短的码字来传送多媒体数据。该方法提供了一种设计任意任意通道的无码代码边缘度分布的方法。基于任何通道中的解码行为的等效度量，基于解码的进程内状态来优化诸如Luby变换代码和猛禽代码之类的无码代码的度分布。使用正则化的最小二乘优化来避免错误的解码。多个反馈可以进一步提高性能。

2. 发明授权

US09215457B2 Method and system for communicating multimedia using reconfigurable rateless codes and decoding in-process status feedback 有权
标题翻译：使用可重新配置的无码代码进行多媒体通信和解码进程状态反馈的方法和系统
公开(公告)号：US09215457B2
公开(公告)日：2015-12-15
申请号：US13475350
申请日：2012-05-18
申请人： Toshiaki Koike-Akino , Jesper H Soerensen , Philip Orlik
发明人： Toshiaki Koike-Akino , Jesper H Soerensen , Philip Orlik
IPC分类号： H04N7/26 , H04N19/164 , H03M13/37
CPC分类号： H04N19/164 , H03M13/373 , H03M13/3761
摘要： A method and system use capacity-approaching rateless code to communicate multimedia data even with very short codewords, such as 64 bits or less, via erasure and noise channels. The method provides a way to design the edge degree distribution of rateless codes for any arbitrary channel. Based on an equivalent metric of decoding behavior in any channels, the degree distribution of a rateless code such as Luby-transform codes and raptor codes is optimized based on in-process status of decoding. A regularized least-squares optimization is used to avoid erroneous decoding. Multiple feedbacks can further improve the performance.
摘要翻译：一种方法和系统使用容量接近的无码代码即使通过擦除和噪声信道的诸如64位或更少的非常短的码字来传送多媒体数据。该方法提供了一种设计任意任意通道的无码代码边缘度分布的方法。基于任何通道中的解码行为的等效度量，基于解码的进程内状态来优化诸如Luby变换代码和猛禽代码之类的无码代码的度分布。使用正则化的最小二乘优化来避免错误的解码。多个反馈可以进一步提高性能。

3. 发明申请

US20130114765A1 Method for Reducing Interference in OFDM Wireless Networks 有权
标题翻译：减少OFDM无线网络干扰的方法
公开(公告)号：US20130114765A1
公开(公告)日：2013-05-09
申请号：US13291546
申请日：2011-11-08
申请人： Ramesh Annavajjala , Liangbin Li , Philip Orlik
发明人： Ramesh Annavajjala , Liangbin Li , Philip Orlik
IPC分类号： H04L27/06
CPC分类号： H04L5/0048 , H04J11/004 , H04L25/03171 , H04L27/2602 , H04L27/32 , H04L2025/03777
摘要： Interference in a received orthogonal frequency division multiplexing (OFDM) symbol, modulated according to selected constellation points Sk, is reduced. The symbol includes a set of pilot signals and a set of data signals yk, where k is a number of consecutive subcarriers used for the pilot and the data signals. The pilot signals are thresholded to detect interfering pilot signals, which are then erased. Channels Ĥk are estimated using remaining pilot signals. The set of data signals are decoded based on the estimated channels Ĥk, and, for each bit bi in the set of data signals, a logarithmic likely ratio (LLR) log  ∑ s k : b i = 0  1  y k - H ^ k  s k  2 ∑ s k : b i = 1  1  y k - H ^ k  s k  2 is determined. The LLR is an indicator of the likely interference.
摘要翻译：根据选择的星座点Sk进行调制的接收正交频分复用（OFDM）符号中的干扰被减少。符号包括一组导频信号和一组数据信号yk，其中k是用于导频和数据信号的连续副载波的数量。导频信号被阈值以检测干扰导频信号，然后擦除导频信号。使用剩余的导频信号估计信道Hk。基于估计的信道H k解码数据信号组，并且对于数据信号组中的每个比特bi，存在对数可能比率（LLR）logΣΣΣKi：k = 2Σsk：2 LLR是可能的干扰的指标。

4. 发明授权

US08369379B2 Packet synchronizing for communications over a wireless communication system 有权
公开(公告)号：US08369379B2
公开(公告)日：2013-02-05
申请号：US12453685
申请日：2009-05-19
申请人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
发明人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
IPC分类号： H04B1/7156 , H04L27/28 , H04J4/00
CPC分类号： H04J3/0608
摘要： Synchronization methods and systems for communications over a multi-band system are presented. A synchronization technique for communications over a multi-band system includes receiving a packet of preamble symbols respectively transmitted over a sequence of frequency sub-bands according to one of a plurality of frequency hopping patterns, wherein the plurality of frequency hopping patterns are partitioned into a plurality of disjoint groups, each group having a different associated periodicity; computing, in parallel, respective autocorrelation values of the packet received in a selected frequency sub-band at a plurality of symbol delays; and selecting one of the plurality of groups of frequency hopping patterns based on the autocorrelation values at the plurality of symbol delays.

5. 发明申请

US20110194452A1 Transmitting Data with Multiple Priorities as OFDM Symbols 审中-公开
标题翻译：以多重优先级发送数据作为OFDM符号
公开(公告)号：US20110194452A1
公开(公告)日：2011-08-11
申请号：US13092562
申请日：2011-04-22
申请人： Philip Orlik , Raymond Yim , Chunjie Duan , Jinyun Zhang
发明人： Philip Orlik , Raymond Yim , Chunjie Duan , Jinyun Zhang
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04N19/615 , H04N19/105 , H04N19/13 , H04N19/46 , H04N19/597 , H04N19/61 , H04N19/63
摘要： A transmitter transmits data having a set of two or more priorities on subcarriers using orthogonal frequency division multiplexing (OFDM) symbols. The transmitter includes a media access (MAC) layer, wherein the MAC layer further includes a queue for storing data at each priority, a rate control block connected to each queue, and a physical (PHY) layer. The PHY layer further includes a channel coder for each priority, wherein each channel coder is connected to the corresponding queue to receive data, and to the rate control block to send coding information.
摘要翻译：发射机使用正交频分复用（OFDM）符号在子载波上发射具有两个或更多个优先级集合的数据。所述发射机包括媒体接入（MAC）层，其中所述MAC层还包括用于存储每个优先级的数据的队列，连接到每个队列的速率控制块以及物理（PHY）层。 PHY层还包括用于每个优先级的信道编码器，其中每个信道编码器连接到对应的队列以接收数据，并且连接到速率控制块以发送编码信息。

6. 发明申请

US20100246635A1 Methods and apparatus for narrow band interference detection and suppression in ultra-wideband systems 有权
标题翻译：超宽带系统中窄带干扰检测和抑制的方法和装置
公开(公告)号：US20100246635A1
公开(公告)日：2010-09-30
申请号：US12385078
申请日：2009-03-30
申请人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
发明人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
IPC分类号： H04B1/69 , H04B1/10
CPC分类号： H04J11/0066 , H04B1/719
摘要： An exemplary method is disclosed to accurately estimate the center frequency of a narrow-band interference (NBI). The exemplary method uses multi-stage autocorrelation-function (ACF) to estimate an NBI frequency. The exemplary method allows an accurate estimation of the center frequency of NBI in an Ultra-Wideband system. A narrow band interference (NBI) estimator based on such a method allows a low complexity hardware implementation. The exemplary method estimates the frequency in multiple stages. Each stage performs an ACF operation on the received signals. The first stage gives an initial estimation and the following stages refine the estimation. The results of all stages are combined to produce the final estimation. An apparatus based on such a multi-stage narrow band interference frequency detector is also disclosed to improve the accuracy by combining various filters with the detector.
摘要翻译：公开了一种用于精确估计窄带干扰（NBI）的中心频率的示例性方法。该示例性方法使用多级自相关函数（ACF）来估计NBI频率。该示例性方法允许在超宽带系统中准确估计NBI的中心频率。基于这种方法的窄带干扰（NBI）估计器允许低复杂度的硬件实现。该示例性方法以多个阶段估计频率。每个级对所接收的信号执行ACF操作。第一阶段给出初步估计，并且以下阶段改进估计。结合所有阶段的结果进行最终估计。还公开了一种基于这种多级窄带干扰频率检测器的装置，通过将各种滤波器与检测器组合来提高精度。

7. 发明申请

US20090296684A1 Packet synchronizing for communications over a wireless communication system 有权
标题翻译：通过无线通信系统进行通信的数据包同步
公开(公告)号：US20090296684A1
公开(公告)日：2009-12-03
申请号：US12453685
申请日：2009-05-19
申请人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
发明人： Zhenzhen Ye , Chunjie Duan , Philip Orlik , Jinyun Zhang
IPC分类号： H04J3/06 , H04K1/10
CPC分类号： H04J3/0608
摘要： Synchronization methods and systems for communications over a multi-band system are presented. A synchronization technique for communications over a multi-band system includes receiving a packet of preamble symbols respectively transmitted over a sequence of frequency sub-bands according to one of a plurality of frequency hopping patterns, wherein the plurality of frequency hopping patterns are partitioned into a plurality of disjoint groups, each group having a different associated periodicity; computing, in parallel, respective autocorrelation values of the packet received in a selected frequency sub-band at a plurality of symbol delays; and selecting one of the plurality of groups of frequency hopping patterns based on the autocorrelation values at the plurality of symbol delays.
摘要翻译：介绍了多频段系统通信的同步方法和系统。用于通过多频带系统进行通信的同步技术包括：接收根据多个跳频模式之一分别在一系列频率子带上传送的前导符号分组，其中多个跳频模式被划分为多个不相交组，每组具有不同的相关周期; 并行地计算在多个符号延迟时在所选择的频率子带中接收的分组的相应自相关值; 以及基于所述多个符号延迟的所述自相关值来选择所述多个组跳频模式中的一个。

8. 发明申请

US20060209924A1 Adaptive delay adjustment for transmitted reference impulse radio systems 失效
公开(公告)号：US20060209924A1
公开(公告)日：2006-09-21
申请号：US11029135
申请日：2005-01-04
申请人： Andreas Molisch , Philip Orlik
发明人： Andreas Molisch , Philip Orlik
IPC分类号： H04B1/00
CPC分类号： H04B1/71637 , H04B1/71635 , H04B1/7172 , H04B2201/71636
摘要： A method determines a delay time between reference and data pulses in a time-hopping impulse radio system. Channel state information of a channel between two transceivers is estimated periodically. The delay time frame between the reference and data pulses is then determined according to the channel state information.

9. 发明授权

US07016405B2 Signal circulation for adaptive signal equalization in digital communication systems 失效
公开(公告)号：US07016405B2
公开(公告)日：2006-03-21
申请号：US10075330
申请日：2002-02-14
申请人： Jyhchau Horng , Jinyun Zhang , Philip Orlik
发明人： Jyhchau Horng , Jinyun Zhang , Philip Orlik
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L25/03133
摘要： A method and system for equalizing a signal transmitted via a channel of a communications system stores an input signal received via the channel in a main buffer. A training signal portion of the received input signal is stored in a circular buffer as a circulating training signal. A mean square error of the training signal is minimized while estimating the transmitted signal, until the mean square error is less than a predetermine threshold. In this case, the input signal received via the channel is equalized directly to make decisions on symbols of the signal transmitted via the channel. During an initial stage of training, the mean square error is determined directly from the training signal, during subsequent stages of training the circulating training signal is used.

10. 发明授权

US08750100B2 Avoiding broken links in smart meter networks for loop-free routing of packets 有权
标题翻译：避免智能电表网络中的链路断开，从而实现无环路由的数据包路由
公开(公告)号：US08750100B2
公开(公告)日：2014-06-10
申请号：US13371423
申请日：2012-02-11
申请人： Jianlin Guo , Chuan Han , Ghulam M Bhatti , Philip Orlik , Jinyun Zhang
发明人： Jianlin Guo , Chuan Han , Ghulam M Bhatti , Philip Orlik , Jinyun Zhang
IPC分类号： G01R31/08
CPC分类号： H04W40/22 , H04L45/18 , H04L45/28 , H04L45/48 , Y02D70/122 , Y02D70/142 , Y02D70/144 , Y02D70/162 , Y02D70/22 , Y02D70/39
摘要： Broken links in a sensor network are avoided by representing the network as a DODAG. A rank associated with each node defines a position of each node relative to other nodes, and the rank is in a form of a proper fraction, and the rank of each node never increases to enable loop-free routing.
摘要翻译：通过将网络表示为DODAG来避免传感器网络中的链路断开。与每个节点相关联的等级定义每个节点相对于其他节点的位置，并且秩是适当分数的形式，并且每个节点的等级从不增加以实现无环路由。

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