公开(公告)号：US08842758B2

公开(公告)日：2014-09-23

申请号：US13693069

申请日：2012-12-04

申请人： Agere Systems LLC

发明人： Graeme Woodward

IPC分类号： H04L27/28 ,  H04L27/26 ,  H04K1/10

CPC分类号： H04L27/2628 ,  H04L27/2618 ,  H04L27/2623

摘要： In one embodiment, an algorithm dynamically selects a method for reducing distortion in a multi-carrier modulated signal, such as an orthogonal frequency division multiplexing (OFDM) signal. The algorithm directs a transmitter to transmit peak-to-average power ratio (PAPR)-reduction signals over reserved tones (i.e., frequencies) if reserved tones are available. If reserved tones are not available, then the algorithm directs the transmitter to transmit PAPR-reduction symbols over free tones if free tones are available. If the free tones for this transmitter are used by adjacent transmitters, then interference-reduction techniques may be used to reduce interference with the adjacent transmitters. If reserved tones and free tones are not available, then the transmitter may use an alternative method to reduce distortion, such as successive clipping and filtering. In another embodiment, the transmitter may transmit PAPR-reduction symbols over both free and reserved tones, if available.

摘要翻译： 在一个实施例中，算法动态地选择减少诸如正交频分复用（OFDM）信号的多载波调制信号中的失真的方法。 如果保留的音调可用，该算法指示发射机在保留的音调（即，频率）上发射峰均功率比（PAPR） - 减小信号。 如果保留的音调不可用，则如果可用音调可用，则算法指示发射机在自由音调上发送PAPR减少符号。 如果该发射机的自由音由相邻发射机使用，则可以使用干扰减少技术来减少与相邻发射机的干扰。 如果保留的音调和自由音调不可用，则发射机可以使用替代方法来减少失真，例如连续的削波和滤波。 在另一个实施例中，如果可用，发射机可以在自由和保留的音调两者之间传送PAPR减少符号。

公开(公告)号：US08774197B2

公开(公告)日：2014-07-08

申请号：US13462927

申请日：2012-05-03

申请人： P. Stephan Bedrosian

发明人： P. Stephan Bedrosian

IPC分类号： H04L12/56

CPC分类号： H04J3/0658 ,  H04J3/0641 ,  H04W92/12 ,  H04W92/14

摘要： In a packet-based (e.g., Ethernet) network, such as the network of central offices and base stations of a wireless telephone system, a node receives one or more incoming packet-based signals from one or more other nodes of the network and recovers a clock signal from each incoming packet-based signal. The node selects one of the recovered clock signals as the node's reference clock signal. When the node is part of a base station, the node uses the selected clock to generate and transmit one or more outgoing packet-based signals to one or more central offices. The node also uses the selected clock to generate the base station's wireless transmissions. In one implementation, the base stations and central offices are connected by Ethernet facilities.

摘要翻译： 在基于分组的（例如，以太网）网络中，诸如中心局的网络和无线电话系统的基站，节点从网络的一个或多个其他节点接收一个或多个基于分组的信号，并且恢复 来自每个进入的基于分组的信号的时钟信号。 节点选择一个恢复的时钟信号作为节点的参考时钟信号。 当节点是基站的一部分时，节点使用所选择的时钟来生成一个或多个输出的基于分组的信号到一个或多个中心局。 节点还使用所选择的时钟来生成基站的无线传输。 在一个实现中，基站和中心局通过以太网设备连接。

公开(公告)号：US08745461B2

公开(公告)日：2014-06-03

申请号：US13591892

申请日：2012-08-22

申请人： Paul Langner

发明人： Paul Langner

IPC分类号： G06F11/00

CPC分类号： H04L1/0045 ,  H04L1/0041 ,  H04L1/0061

摘要： Methods and apparatus are provided for N+1 packet level mesh protection. An error correction encoder is provided for encoding message symbols, m0 through mN-1, to generate a codeword that includes the message symbols, m0 through mN-1, and one or more check symbols. The error correction encoder comprises a linear feedback shift register having one or more flip-flops to generate the check symbols after shifting the message symbols, m0 through mN-1, through the linear feedback shift register. An error correction decoder is also provided for decoding a codeword that includes message symbols, m0 through mN-1, and one or more check symbols. The error correction decoder comprises a linear feedback shift register having one or more flip-flops to generate an error symbol based on a remainder after shifting the message symbols, m0 through mN-1, and the one or more check symbols through the linear feedback shift register.

摘要翻译： 提供N + 1数据包级网格保护的方法和装置。 提供了一种用于对消息符号m0至mN-1进行编码的纠错编码器，以产生包括消息符号m0至mN-1以及一个或多个检验符号的码字。 误差校正编码器包括具有一个或多个触发器的线性反馈移位寄存器，用于通过线性反馈移位寄存器移位消息符号m0至mN-1后产生校验符号。 还提供了一种纠错解码器，用于对包含消息符号m0至mN-1以及一个或多个检验符号的码字进行解码。 误差校正解码器包括线性反馈移位寄存器，其具有一个或多个触发器，以在通过线性反馈移位移位消息符号m0至mN-1之后基于余数产生错误符号，以及一个或多个校验符号 寄存器。

公开(公告)号：US08711984B2

公开(公告)日：2014-04-29

申请号：US12017765

申请日：2008-01-22

申请人： Kelly K. Fitzpatrick ,  Erich F. Haratsch

发明人： Kelly K. Fitzpatrick ,  Erich F. Haratsch

IPC分类号： H04L27/06

CPC分类号： G11B5/09 ,  H03M13/3905 ,  H03M13/395 ,  H03M13/6343 ,  H03M13/6502 ,  H04L1/0055 ,  H04L1/0066

摘要： Methods and apparatus are provided for high-speed, low-power, high-performance channel detection. A soft output channel detector is provided that operates at a rate of 1/N and detects N bits per 1/N-rate clock cycle. The channel detector comprises a plurality, D, of MAP detectors operating in parallel, wherein each of the MAP detectors generates N/D log-likelihood ratio values per 1/N-rate clock cycle and wherein at least one of the plurality of MAP detectors constrains each of the bits. The log-likelihood ratio values can be merged to form an output sequence. A single MAP detector is also provided that comprises a forward detector for calculating forward state metrics; a backward detector for calculating backward state metrics; and a current branch detector for calculating a current branch metric, wherein at least two of the forward detector, the backward detector and the current branch detector employ different trellis structures.

摘要翻译： 提供了高速，低功耗，高性能通道检测的方法和装置。 提供了以1 / N的速率操作的软输出通道检测器，并且每1 / N速率时钟周期检测N位。 信道检测器包括并行操作的多个MAP检测器，其中每个MAP检测器每1 / N速率时钟周期产生N / D对数似然比值，并且其中多个MAP检测器中的至少一个 限制每个位。 对数似然比值可以合并形成输出序列。 还提供单个MAP检测器，其包括用于计算前向状态度量的前向检测器; 用于计算后向状态度量的反向检测器; 以及用于计算当前分支量度的当前分支检测器，其中所述正向检测器，所述后向检测器和所述当前支路检测器中的至少两个采用不同的格状结构。

公开(公告)号：US08699557B2

公开(公告)日：2014-04-15

申请号：US13082881

申请日：2011-04-08

申请人： Erich F. Haratsch ,  Kameran Azadet

发明人： Erich F. Haratsch ,  Kameran Azadet

IPC分类号： H04L27/06

CPC分类号： H04L25/03235 ,  H03M13/03 ,  H04L25/03057 ,  H04L25/4917

摘要： A pipelined decision feedback unit (DFU) is disclosed for use in reduced-state Viterbi detectors with local feedback. The disclosed pipelined decision feedback unit improves the maximum data rate that may be achieved by the reduced state Viterbi detector by the pipelined computation of partial intersymbol interference-based estimates. A pipelined decision feedback unit is thus disclosed that computes a plurality of partial intersymbol interference based estimates, wherein at least one partial intersymbol interference-based estimate is based on a selected partial intersymbol interference-based estimate; and selects the selected partial intersymbol interference-based estimate from among partial intersymbol interference-based estimates for path extensions into a state.

摘要翻译： 公开了一种流水线判决反馈单元（DFU），用于具有本地反馈的简化状态维特比检测器。 所公开的流水线判决反馈单元通过基于部分符号间干扰的估计的流水线计算提高了通过简化状态维特比检测器可以实现的最大数据速率。 因此公开了流水线判决反馈单元，其计算多个基于部分符号间干扰的估计，其中至少一个部分符号间干扰估计基于所选择的部分符号间干扰估计; 并且将所选择的部分符号间干扰估计从用于路径扩展的部分符号间干扰估计中选择为状态。

公开(公告)号：US08688853B2

公开(公告)日：2014-04-01

申请号：US10037067

申请日：2001-12-21

申请人： David E. Clune ,  Hanan Z. Moller ,  David P. Sonnier

发明人： David E. Clune ,  Hanan Z. Moller ,  David P. Sonnier

IPC分类号： G06F15/16 ,  H04H20/71 ,  H04L12/28

CPC分类号： H04L12/185 ,  H04Q2213/1305 ,  H04Q2213/13175 ,  H04Q2213/13204 ,  H04Q2213/13216 ,  H04Q2213/13242 ,  H04Q2213/13389

摘要： A multicast group list (i.e., destination node address list) for a network device is circularly linked such that the list can be entered at any point and traversed back to the entry point. The list traversal is then terminated as the entire list has been processed. The data packet received at the network device for transmission to the multicast group can indicate the entry point, although there are other techniques for determining the entry point. The destination node address for the entry point is skipped, that is the multicast data packet is not transmitted to the entry point destination address.

摘要翻译： 网络设备的组播组列表（即，目的地节点地址列表）被循环链接，使得可以在任何点输入列表并遍历到入口点。 随着整个列表被处理，列表遍历就被终止。 在网络设备处接收到的用于传输到多播组的数据分组可以指示入口点，尽管还有其他确定入口点的技术。 跳过入口点的目的地节点地址，即不将多播数据包发送到入口点目的地址。

公开(公告)号：US08688149B2

公开(公告)日：2014-04-01

申请号：US13792593

申请日：2013-03-11

申请人： Agere Systems LLC

发明人： Joseph M. Cannon ,  James A. Johanson

IPC分类号： H04W4/00

CPC分类号： H04M1/72502 ,  H04M1/72513

摘要： A method of using an intercom on a cordless telephone during an active call. The active call is put on hold while the intercom is in use. Once the call is re-activated, the intercom is shut off. This system may be designed for a cordless telephone with one handset or a plurality of handsets.

摘要翻译： 一种在主动呼叫期间在无绳电话上使用对讲机的方法。 对讲机正在使用时，主动呼叫被置于保持状态。 呼叫重新启动后，对讲机将被关闭。 该系统可以设计用于具有一个手机或多个手机的无绳电话。

公开(公告)号：US08687664B2

公开(公告)日：2014-04-01

申请号：US11371277

申请日：2006-03-08

申请人： Joseph Michael Freund

发明人： Joseph Michael Freund

IPC分类号： H01S5/183 ,  H01S5/0683

CPC分类号： H01S5/0264 ,  H01L2224/48091 ,  H01S5/02276 ,  H01S5/0683 ,  H01S5/183 ,  H01L2924/00014

摘要： A laser assembly comprises a substrate, one or more standoffs and a semiconductor laser. The substrate has a first doped region and a second doped region. The second doped region is proximate to an upper surface of the substrate and forms a pn junction with the first doped region. The semiconductor laser is operative to emit light from an upper surface and a lower surface. Moreover, the semiconductor laser is attached to the upper surface of the substrate with the one or more standoffs such that the light emitted from the lower surface of the semiconductor laser impinges on the second doped region.

摘要翻译： 激光组件包括衬底，一个或多个支座和半导体激光器。 衬底具有第一掺杂区和第二掺杂区。 第二掺杂区域靠近衬底的上表面并与第一掺杂区域形成pn结。 半导体激光器可操作以从上表面和下表面发射光。 此外，半导体激光器通过一个或多个支座附接到基板的上表面，使得从半导体激光器的下表面发射的光照射在第二掺杂区域上。

公开(公告)号：US20140015127A1

公开(公告)日：2014-01-16

申请号：US13934110

申请日：2013-07-02

申请人： AGERE SYSTEMS LLC

发明人： Mark A. Bachman ,  Donald S. Bitting ,  Sailesh Chittipeddi ,  Seung H. Kang ,  Sailesh M. Merchant

IPC分类号： H01L23/00

CPC分类号： H01L24/14 ,  H01L24/03 ,  H01L24/05 ,  H01L24/11 ,  H01L24/13 ,  H01L2224/02125 ,  H01L2224/0401 ,  H01L2224/05006 ,  H01L2224/05022 ,  H01L2224/05093 ,  H01L2224/05096 ,  H01L2224/05556 ,  H01L2224/05568 ,  H01L2224/13007 ,  H01L2224/13023 ,  H01L2224/13099 ,  H01L2224/131 ,  H01L2224/13111 ,  H01L2224/13139 ,  H01L2224/13147 ,  H01L2924/0001 ,  H01L2924/00014 ,  H01L2924/0002 ,  H01L2924/01004 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01022 ,  H01L2924/01023 ,  H01L2924/01024 ,  H01L2924/01028 ,  H01L2924/01029 ,  H01L2924/01032 ,  H01L2924/01033 ,  H01L2924/01047 ,  H01L2924/0105 ,  H01L2924/01073 ,  H01L2924/01075 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/014 ,  H01L2924/04941 ,  H01L2924/04953 ,  H01L2924/05042 ,  H01L2924/14 ,  H01L2924/00012 ,  H01L2224/05552

摘要： In one aspect, there is provided a semiconductor device that comprises an interconnect layer located over a semiconductor substrate. A passivation layer is located over the interconnect layer and has a contact support pillar opening formed therein. Contact support pillars that comprise a conductive metal and have a metal extension are located within the opening of the passivation layer.

摘要翻译： 在一个方面，提供了一种半导体器件，其包括位于半导体衬底之上的互连层。 钝化层位于互连层上方并具有在其中形成的接触支撑柱孔。 包含导电金属并且具有金属延伸部的接触支撑柱位于钝化层的开口内。

公开(公告)号：US08615033B2

公开(公告)日：2013-12-24

申请号：US12346476

申请日：2008-12-30

申请人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

发明人： Jan Boer ,  Bas Driesen ,  Ra'anan Gil ,  Kai Roland Kriedte

IPC分类号： H04B1/38

CPC分类号： H04L1/002 ,  H04L1/0002 ,  H04L1/206 ,  Y02D50/10

摘要： A method for controlling a transmission rate of at least one transceiver, the transceiver including a transmitter and a receiver, includes: determining a signal quality characteristic corresponding to a signal received at the receiver by measuring a difference between one or more reference constellation points and one or more received constellation points, and modifying a transmission rate of the transmitter over a wireless communication channel as a function of the signal quality characteristic. The step of modifying the transmission rate over the wireless communication channel includes: determining lower and upper threshold levels representing reference minimum and maximum signal quality characteristics, respectively, corresponding to the transmission rate; maintaining the transmission rate when the measured signal quality characteristic is between the lower and upper threshold levels; and increasing the transmission rate when the signal quality characteristic is less than one or more lower threshold levels associated with one or more corresponding higher transmission rates.

摘要翻译： 一种用于控制至少一个收发器的传输速率的方法，所述收发器包括发射机和接收机，包括：通过测量一个或多个参考星座点与一个参考星座点之间的差异来确定与在接收机处接收到的信号相对应的信号质量特性 或更多的接收到的星座点，以及作为信号质量特性的函数，通过无线通信信道修改发射机的传输速率。 通过无线通信信道修改传输速率的步骤包括：分别对应于传输速率确定代表参考最小和最大信号质量特性的较低和较高阈值电平; 当测量的信号质量特性在下限阈值和上限阈值之间时，保持传输速率; 以及当信号质量特性小于与一个或多个相应较高传输速率相关联的一个或多个下限阈值时，增加传输速率。