公开(公告)号：US08503587B2

公开(公告)日：2013-08-06

申请号：US13113445

申请日：2011-05-23

Applicant: Mac L. Hartless

Inventor： Mac L. Hartless

IPC: H03D1/00

CPC classification number: H04L25/0202 ,  H04L25/0214 ,  H04L25/0222 ,  H04L27/00

Abstract: Peak fade depth is measured (202) over a period of time, and a bandwidth of a channel filter (104) is then determined (206) according to the measured peak fade depth (202). In preferred embodiments the average peak fade depth over two or more time slots is used. In a specific embodiment, an α filter (206) is used to determine the bandwidth of the matched filter (104), in which α is determined based upon the measured peak fade depth (204). In various embodiments, peak fade depth is correlated to the Doppler shifting of the channel, which in turn is used to determine the bandwidth of the matched filter by way of the α parameter. Hence, a non-linear equation can be used to determine the value of α which yields a minimum bit error rate for the matched filter (104). More specifically, a matched filter (104) is matched to a received signal r(t) having k states according to a plurality of matched filters Mk and outputs a signal given by |r(t)−Ck(t)*Mk(t)|2, in which Ck(t) is a channel estimate provide by a channel tracker (106) for a state k at time period t that is given by Ck(t)=α*ck(t)+(1−α)*Ck(t−1), ck(t)=Mk*r(t)/(Mk*conj(Mk)), and conj(Mk) is the complex conjugate of Mk. For each time slot, α is computed from the running average of the peak fade depth (202) according to a predetermined equation (204).

Abstract translation: 在一段时间内测量峰值衰落深度（202），然后根据测量的峰值衰落深度（202）确定通道滤波器（104）的带宽（206）。 在优选实施例中，使用两个或多个时隙上的平均峰值衰减深度。 在一个具体实施例中，α滤波器（206）用于确定匹配滤波器（104）的带宽，其中基于所测量的峰值衰落深度（204）确定α。 在各种实施例中，峰值衰落深度与信道的多普勒频移相关，其又用于通过α参数来确定匹配滤波器的带宽。 因此，可以使用非线性方程来确定α的值，其产生匹配滤波器的最小误码率（104）。 更具体地，匹配滤波器（104）与根据多个匹配滤波器Mk的具有k个状态的接收信号r（t）匹配，并输出由| r（t）-Ck（t）* Mk（t）给出的信号 ）| 2，其中C k（t）是信道跟踪器（106）针对时间段t处的状态k提供的信道估计，其由Ck（t）=α* ck（t）+（1-α ）* Ck（t-1），ck（t）= Mk * r（t）/（Mk * conj（Mk）），conj（Mk）是Mk的复共轭。 对于每个时隙，根据预定等式（204）从峰值衰落深度（202）的运行平均值计算α。

公开(公告)号：US20130182783A1

公开(公告)日：2013-07-18

申请号：US13469365

申请日：2012-05-11

Applicant: Peter Jänicke

Inventor： Peter Jänicke

IPC: H04L27/00

CPC classification number: H04L27/00 ,  G06F2213/0038 ,  H04L25/4908

Abstract: A method for serial transmission of data in form of telegrams and symbols between at least one sender and at least one receiver, includes converting on the sender side an item of data into a symbol, converting on the receiver side the symbol into an item of data, identifying a telegram with special symbols, transmitting at least one first and one second pause symbol different from the special symbols for encoding a pause between telegrams, and deriving information from a sequence of the pause symbols.

Abstract translation: 一种在至少一个发送者和至少一个接收者之间以电报和符号的形式串行传输数据的方法，包括在发送方将数据项转换为符号，将接收方转换为符号数据为数据项 识别具有特殊符号的电报，发送不同于用于编码电报之间的暂停的特殊符号的至少一个第一和第二暂停符号，以及从暂停符号序列导出信息。

公开(公告)号：US20130177088A1

公开(公告)日：2013-07-11

申请号：US13346060

申请日：2012-01-09

Applicant: Cheng-Chou Lan ,  Cimarron Mittelsteadt

Inventor： Cheng-Chou Lan ,  Cimarron Mittelsteadt

IPC: H04L27/00

CPC classification number: H04L27/00 ,  H04L1/004 ,  H04L7/0331 ,  H04L7/041 ,  H04L27/261 ,  H04L27/2647 ,  H04L27/2656

Abstract: A technique detects the presence of a packet identification sequence in a received sequence of samples received over a communications network. The packet identification sequence, when present and properly detected in a received packet, is used to determine a particular type of the received packet from a plurality of packet types that may be received over the communications network. The technique for detecting the packet identification sequence includes detecting a null sequence in the received packet and a predetermined identification sequence in the packet. Detection of the predetermined sequence uses energy estimates for corresponding windows of received samples.

Abstract translation: 技术检测在通过通信网络接收的接收的样本序列中存在分组识别序列。 分组识别序列在接收到的分组中存在并被适当地检测时，用于根据通过通信网络接收的多个分组类型来确定接收分组的特定类型。 用于检测分组识别序列的技术包括检测所接收分组中的空序列和分组中的预定识别序列。 预定序列的检测使用接收样本的相应窗口的能量估计。

公开(公告)号：US20130177004A1

公开(公告)日：2013-07-11

申请号：US13739657

申请日：2013-01-11

Applicant: MARVELL WORLD TRADE LTD.

Inventor： Sudhir Srinivasa ,  Hongyuan Zhang ,  Yong Liu

IPC: H04L29/06

CPC classification number: H04L29/0653 ,  H04L1/0008 ,  H04L1/0041 ,  H04L1/0079 ,  H04L1/1671 ,  H04L5/0091 ,  H04L27/00

Abstract: In a method for generating a data unit, a signal field is generated to include a first subfield having one of: a length indication to indicate a number of bytes in a data portion of the data unit, or a duration indication to indicate a number of OFDM symbols in the data portion of the data unit and a second subfield to indicate whether the first subfield includes the length indication or the duration indication. When the first subfield includes the length indication, one or more padding bits are added to a set of information bits according to a first padding scheme. When the first subfield includes the duration indication, one or more padding bits are added to the set of information bits to according to a second padding scheme. Padded information bits are encoded, and the data unit is generated to included the encoded information bits.

Abstract translation: 在用于产生数据单元的方法中，生成信号字段以包括具有以下之一的第一子场：指示数据单元的数据部分中的字节数的长度指示，或表示数据单元的数量的持续时间指示 数据单元的数据部分中的OFDM符号和第二子字段，以指示第一子字段是否包括长度指示或持续时间指示。 当第一子字段包括长度指示时，根据第一填充方案将一个或多个填充比特添加到一组信息比特。 当第一子场包括持续时间指示时，根据第二填充方案将一个或多个填充比特添加到该组信息比特。 编码填充信息比特，生成数据单元以包含编码信息比特。

公开(公告)号：US20130094621A1

公开(公告)日：2013-04-18

申请号：US13693244

申请日：2012-12-04

Applicant: Broadcom Corporation

Inventor： Wei LUO ,  Pan Liu ,  Thirunathan Sutharsan

IPC: H04L27/00

CPC classification number: H04L27/00 ,  H04B1/7107 ,  H04B1/7115 ,  H04L25/0204

Abstract: Aspects of a method and system for channel estimation for interference suppression are provided. In this regard, one or more circuits and/or processors of a mobile communication device may generate and/or receive a first set of channel estimates and a second set of channel estimates. The one or more circuits and/or processors may modify the second set of channel estimates based on a comparison of a measure of correlation between the first set of channel estimates and the second set of channel estimates with a threshold. The first set of channel estimates and/or the modified second set of channel estimates may be utilized for cancelling interference in received signals. The first set of channel estimates may be associated with a first transmit antenna of a base transceiver station and the second set of channel estimates may be associated with a second transmit antenna of the base transceiver station.

Abstract translation: 提供了用于干扰抑制的信道估计的方法和系统的方面。 在这点上，移动通信设备的一个或多个电路和/或处理器可以生成和/或接收第一组信道估计和第二组信道估计。 一个或多个电路和/或处理器可以基于第一组信道估计与具有阈值的第二组信道估计之间的相关度的比较来修改第二组信道估计。 可以利用第一组信道估计和/或修改的第二组信道估计来消除接收信号中的干扰。 第一组信道估计可以与基站收发台的第一发射天线相关联，并且第二组信道估计可以与基站的第二发射天线相关联。

公开(公告)号：US20130094618A1

公开(公告)日：2013-04-18

申请号：US13705527

申请日：2012-12-05

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER

IPC: H04L27/00

CPC classification number: H04L27/00 ,  H04L27/183 ,  H04L27/2604

Abstract: A communication system utilizing a hierarchically modulated signal and method thereof are provided, wherein a receiver system is configured to receive a hierarchically modulated signal. The receiver system includes a receiver device configured to receive the hierarchically modulated signal, which is a function of a time domain, and including a high priority data stream that has a single carrier type modulation, and a low priority data stream having data bits that are spread over a plurality of data symbols of a high priority data modulation. The receiver system further includes a low priority processor device, which includes an OFDM decoder configured to convert the low priority data stream of the hierarchically modulated signal that is a function of the time domain to be a function of a frequency domain by utilizing a FFT, such that an output is emitted that is representative of the low priority data stream.

Abstract translation: 提供一种利用分层调制信号的通信系统及其方法，其中接收机系统被配置为接收分层调制信号。 接收机系统包括被配置为接收作为时域的函数的分层调制信号的接收机设备，并且包括具有单载波类型调制的高优先级数据流和具有数据比特的低优先级数据流 扩展到高优先级数据调制的多个数据符号。 接收机系统还包括低优先级处理器设备，其包括OFDM解码器，其被配置为通过利用FFT将作为时域的函数的作为时域的函数的分层调制信号的低优先级数据流转换成频域的函数， 使得发出代表低优先级数据流的输出。

公开(公告)号：US20130039265A1

公开(公告)日：2013-02-14

申请号：US13563887

申请日：2012-08-01

Applicant: Won Jae SHIN ,  Jong Bu LIM ,  Chang Yong SHIN

Inventor： Won Jae SHIN ,  Jong Bu LIM ,  Chang Yong SHIN

IPC: H04J3/08

CPC classification number: H04L27/00 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/086 ,  H04B7/15542 ,  H04L25/03898

Abstract: A relay and a terminal in a multi-pair two-way network and a communication method thereof is provided. A communication method of a relay of a network including K transmit-and-receive pairs including a plurality of terminals, with the relay including M antennas and each of the terminals including N antennas, including accessing a codebook including codewords, the codebook being configured to enable effective channels from the K transmit-and-receive pairs to the relay to be aligned in independent dimensions, respectively, when the K transmit-and-receive pairs transmit signals simultaneously, each of the effective channels being aligned based on one of the codewords, selecting one or more of the codewords indicating the effective channels from the K transmit-and-receive pairs to the relay, respectively, and transmitting information associated with the selected codewords to corresponding ones of the K transmit-and-receive pairs.

Abstract translation: 提供了一种多对双向网络中的中继和终端及其通信方法。 一种包括K个发送和接收对的网络的中继的通信方法，包括多个终端，所述中继包括M个天线，并且每个终端包括N个天线，包括访问包括码字的码本，该码本被配置为 当K个发送和接收对同时发送信号时，分别使得K个发送和接收对到中继器的有效信道在独立的维度上对准，每个有效信道基于一个码字对齐 分别从K个发送和接收对中分别选择一个或多个指示有效信道的码字，并将与所选择的码字相关联的信息发送到K个发送和接收对中的相应的一个。

公开(公告)号：US08369356B2

公开(公告)日：2013-02-05

申请号：US12042834

申请日：2008-03-05

Applicant: Ming-Chang Tsai ,  James J. Wu ,  Pillappakkam Srinivas ,  Ric Senior ,  Vinayak Chowdiah

Inventor： Ming-Chang Tsai ,  James J. Wu ,  Pillappakkam Srinivas ,  Ric Senior ,  Vinayak Chowdiah

IPC: H04J3/16

CPC classification number: H04L27/00

Abstract: Techniques for dynamically managing receiver resources to achieve good latency and throughput performance are described. A receiver may have various types of receiver resources such as demod resources for demodulating packets, decode resources for decoding packets, packet processing resources, etc. These various types of receiver resources may be dynamically assigned to packets. In one design, receiver resource usage by each packet to be processed by the receiver may be estimated. The available receiver resources may be assigned to packets based on the estimated receiver resource usage by each packet and one or more assignment criteria such as priority, latency requirements, etc. The latency of each packet may be determined based on the receiver resource assignment. If the latency requirements of any packet are not met, then receiver processing may be skipped or deferred for one or more packets such that the latency requirements of each packet to be processed can be met.

Abstract translation: 描述了用于动态管理接收机资源以实现良好延迟和吞吐量性能的技术。 接收机可以具有各种类型的接收机资源，例如用于解调分组的解调资源，用于解码分组的解码资源，分组处理资源等。这些各种类型的接收机资源可以动态地分配给分组。 在一种设计中，可以估计由接收机处理的每个分组的接收机资源使用。 可以基于每个分组的估计的接收机资源使用和一个或多个分配标准（例如优先级，等待时间要求等）将可用的接收机资源分配给分组。可以基于接收机资源分配来确定每个分组的等待时间。 如果不满足任何分组的等待时间要求，则可以针对一个或多个分组跳过或延迟接收机处理，从而可以满足要处理的每个分组的等待时间要求。

公开(公告)号：US08340213B2

公开(公告)日：2012-12-25

申请号：US13399103

申请日：2012-02-17

Applicant: Toru Chinen ,  Hiroyuki Honma

Inventor： Toru Chinen ,  Hiroyuki Honma

IPC: H04L27/00

CPC classification number: H04L27/00 ,  G10L19/0204

Abstract: An encoding apparatus that divides an input time series signal into a plurality of sub-bands and encodes a low frequency sub-band signal to generate encoded data of the low frequency sub-band signal. Concurrently, it compares the frequency amplitude peak of the new high frequency sub-band signal generated from the low frequency sub-band signal and the original high frequency sub-band signal and generates frequency amplitude peak information of the high frequency sub-band signal. It compares the gain of the new high frequency sub-band signal generated by using the low frequency sub-band signal and the original high frequency sub-band signal and generates gain information of the high frequency sub-band signal. Subsequently, the signal encoding apparatus multiplexes the encoded data of the low frequency sub-band signal, the frequency amplitude peak information of the high frequency sub-band signal and the gain information of the high frequency sub-band signal and outputs compressed data.

Abstract translation: 一种编码装置，其将输入的时间序列信号分割为多个子带，并对低频子带信号进行编码，以生成低频子带信号的编码数据。 同时，比较从低频子带信号和原始高频子带信号产生的新的高频子带信号的频率幅度峰值，并生成高频子带信号的频率幅度峰值信息。 它比较通过使用低频子带信号和原始高频子带信号产生的新的高频子带信号的增益，并产生高频子带信号的增益信息。 随后，信号编码装置将低频子带信号的编码数据，高频子带信号的频率振幅峰值信息和高频子带信号的增益信息进行复用，并输出压缩数据。

公开(公告)号：US20120300821A1

公开(公告)日：2012-11-29

申请号：US13113445

申请日：2011-05-23

Applicant: Mac L. Hartless

Inventor： Mac L. Hartless

IPC: H04B17/00

CPC classification number: H04L25/0202 ,  H04L25/0214 ,  H04L25/0222 ,  H04L27/00

Abstract: Peak fade depth is measured (202) over a period of time, and a bandwidth of a channel filter (104) is then determined (206) according to the measured peak fade depth (202). In preferred embodiments the average peak fade depth over two or more time slots is used. In a specific embodiment, an α filter (206) is used to determine the bandwidth of the matched filter (104), in which α is determined based upon the measured peak fade depth (204). In various embodiments, peak fade depth is correlated to the Doppler shifting of the channel, which in turn is used to determine the bandwidth of the matched filter by way of the α parameter. Hence, a non-linear equation can be used to determine the value of α which yields a minimum bit error rate for the matched filter (104). More specifically, a matched filter (104) is matched to a received signal r(t) having k states according to a plurality of matched filters Mk and outputs a signal given by |r(t)−Ck(t)*Mk(t)|2, in which Ck(t) is a channel estimate provide by a channel tracker (106) for a state k at time period t that is given by Ck(t)=α*ck(t)+(1−α)*Ck(t−1), ck(t)=Mk*r(t)/(Mk*conj(Mk)), and conj(Mk) is the complex conjugate of Mk. For each time slot, α is computed from the running average of the peak fade depth (202) according to a predetermined equation (204).

Abstract translation: 在一段时间内测量峰值衰落深度（202），然后根据测量的峰值衰落深度（202）确定通道滤波器（104）的带宽（206）。 在优选实施例中，使用两个或多个时隙上的平均峰值衰减深度。 在具体实施例中，α滤波器（206）用于确定匹配滤波器（104）的带宽，其中α基于测量的峰值衰落深度（204）来确定。 在各种实施例中，峰值衰落深度与信道的多普勒频移相关，其又用于通过α参数来确定匹配滤波器的带宽。 因此，可以使用非线性方程来确定α的值，其产生匹配滤波器（104）的最小误码率。 更具体地，匹配滤波器（104）与根据多个匹配滤波器Mk的具有k个状态的接收信号r（t）匹配，并输出由| r（t）-Ck（t）* Mk（t）给出的信号 ）| 2，其中Ck（t）是由时间段t由通道C（t）=α* ck（t）+（1-α）给出的通道跟踪器（106）提供的信道估计 ）* Ck（t-1），ck（t）= Mk * r（t）/（Mk * conj（Mk）），conj（Mk）是Mk的复共轭。 对于每个时隙，根据预定等式（204）从峰值衰落深度（202）的运行平均值计算α。