Interleaved coder and method
    41.
    发明授权
    Interleaved coder and method 有权
    交错编码器和方法

    公开(公告)号:US06603412B2

    公开(公告)日:2003-08-05

    申请号:US10033135

    申请日:2001-12-28

    IPC分类号: H03M700

    摘要: Quasi-parallel read/write interleaver architecture for data blocks by sequential spreading of variable size data subblocks into memory banks with bank address contention initiating the next data subblock. Iterative Turbo decoders with MAP decoders use such quasi-parallel interleavers and deinterleavers.

    摘要翻译: 用于数据块的准并行读/写交织器架构通过将可变大小的数据子块顺序扩展到具有启动下一数据子块的存储体地址争用的存储体。 具有MAP解码器的迭代Turbo解码器使用这种准并行交织器和解交织器。

    Touch-sensitive interface and method using orthogonal signaling
    43.
    发明授权
    Touch-sensitive interface and method using orthogonal signaling 有权
    使用正交信令的触敏接口和方法

    公开(公告)号:US08605054B2

    公开(公告)日:2013-12-10

    申请号:US12807333

    申请日:2010-09-02

    IPC分类号: G06F3/041 G06F3/038

    CPC分类号: G06F3/044 G06F3/0418

    摘要: A touch screen system includes a capacitive touch screen (1) including a plurality of row conductors (7-1,2 . . . n) and a column conductor (5-1). A plurality of cotemporaneous orthogonal excitation signals (S1(t), S2(t) . . . Sn(t)) are simultaneously driven onto the row conductors, respectively. The capacitively coupled signals on the column conductor may be influenced by a touch (10) on the capacitive touch screen. Receiver circuitry (50) includes a sense amplifier (21-1) coupled to generate an amplifier output signal (r1(t)) in response to signals capacitively coupled onto the column conductor. WHT-based circuitry (35) determines amounts of signal contribution capacitively coupled by each of the excitation signals, respectively, to the amplifier output signal.

    摘要翻译: 触摸屏系统包括电容式触摸屏(1),其包括多个行导体(7-1.2 .n)和列导体(5-1)。 多个同时正交激励信号(S1(t),S2(t)... Sn(t))分别同时被驱动到行导体上。 列导体上的电容耦合信号可能受到电容式触摸屏上的触摸(10)的影响。 接收器电路(50)包括响应于电容耦合到列导体上的信号而耦合以产生放大器输出信号(r1(t))的读出放大器(21-1)。 基于WHT的电路(35)确定分别通过每个激励信号电容耦合到放大器输出信号的信号贡献量。

    Interleaver Design and Header Structure For ITU G.hnem
    44.
    发明申请
    Interleaver Design and Header Structure For ITU G.hnem 有权
    ITU G.hnem的交织器设计和标题结构

    公开(公告)号:US20110280261A1

    公开(公告)日:2011-11-17

    申请号:US13101938

    申请日:2011-05-05

    IPC分类号: H04J99/00

    摘要: Embodiments of the invention provide an interleaver design and header fields for ITU-T G.hnem. The header may comprise two parts that are separately encoded. A common header segment is encoded alone, and an embedded header segment is encoded with payload data. The interleaver operates on blocks having a size based upon a total number of input bits in an FEC codeword block, a total number of bits loaded on symbols that span a half mains cycle, or a maximum fragment size of 3072 bits. The blocks may be repeated before interleaving. Each block and its repetitions may be interleaved together, such as for header data, or each block and repetition may be interleaved separately, such as for payload data. Cyclic padding may be used on each block to create an integer number of symbols for transmission.

    摘要翻译: 本发明的实施例提供了用于ITU-T G.hnem的交织器设计和报头字段。 标题可以包括分开编码的两个部分。 公共头段被单独编码,并且嵌入的标题段用有效载荷数据进行编码。 交织器对具有基于FEC码字块中的输入位的总数的大小的块,对跨越半电源周期的符号上加载的总位数或3072位的最大片段大小进行操作。 可以在交织之前重复这些块。 每个块及其重复可以交织在一起,诸如用于报头数据,或者每个块和重复可以被单独交织,诸如用于有效载荷数据。 可以在每个块上使用循环填充来创建用于传输的整数个符号。

    Receiving a pilot design and channel estimation
    45.
    发明授权
    Receiving a pilot design and channel estimation 有权
    接收试点设计和信道估计

    公开(公告)号:US07929416B2

    公开(公告)日:2011-04-19

    申请号:US12639422

    申请日:2009-12-16

    IPC分类号: H04J11/00

    摘要: A receiver in an OFDM based communication system is adapted to perform channel estimation using a received reference signal transmitted from at least one antenna The reference signal is substantially located into at least two OFDM symbols of a transmission time interval comprising of more than two OFDM symbols. A power level of said reference signal is divided into said non-consecutive OFDM symbols in said transmission time interval and adapted to use the reference signal located in a first OFDM symbol in succeeding transmission time intervals in addition to the reference symbols in a current transmission time interval and a preceding transmission time interval.

    摘要翻译: 基于OFDM的通信系统中的接收机适于使用从至少一个天线发射的接收的参考信号来执行信道估计。参考信号基本上位于包括多于两个OFDM符号的传输时间间隔的至少两个OFDM符号中。 所述参考信号的功率电平在所述传输时间间隔中被划分为所述非连续OFDM符号,并且适于在当前传输时间中除了参考符号之外,使用位于后续传输时间间隔中的第一OFDM符号中的参考信号 间隔和之前的传输时间间隔。

    OFDM-Lite Architecture for HomePlug
    46.
    发明申请
    OFDM-Lite Architecture for HomePlug 有权
    用于HomePlug的OFDM-Lite架构

    公开(公告)号:US20100272192A1

    公开(公告)日:2010-10-28

    申请号:US12768676

    申请日:2010-04-27

    IPC分类号: H04L27/28 H04L25/00

    CPC分类号: H04L27/2613

    摘要: A device for communicating digital data over power lines includes a power line interface for transmitting data over at least one band of frequencies. An orthogonal frequency division multiplexing (OFDM) modulation unit generates OFDM symbols using a set of tones for the frequency band. A preamble generation unit generates preamble sequences for the frequency band by using the set of tones used by the OFDM modulation unit. The tones used by the preamble generation unit have a constant magnitude, and a set of phases obtained by quantizing to a small alphabet the phase of a set of tones obtained by taking an IFFT of a portion of a preamble used by a non-interoperable powerline access device. The device may transmit on two or more bands using a sampling frequency clock, wherein a lower band clock frequency is equal to or an integer divisor of a higher band clock frequency.

    摘要翻译: 用于通过电力线传送数字数据的装置包括用于通过至少一个频带传送数据的电力线接口。 正交频分复用(OFDM)调制单元使用用于频带的一组音调来生成OFDM符号。 前导码生成单元通过使用由OFDM调制单元使用的音调集合来生成用于频带的前同步码序列。 由前置码生成单元使用的音调具有恒定的幅度,以及通过将非可互操作的电力线使用的前置部分的一部分的IFFT获得的一组音调的相位来量化到小的字母而获得的一组相位 访问设备 该装置可以使用采样频率时钟在两个或更多个频带上进行传输,其中较低频带时钟频率等于或更高频带时钟频率的整数除数。

    Beam Forming for Transmit Using Bluetooth Modified Hopping Sequences (BFTBMH)
    47.
    发明申请
    Beam Forming for Transmit Using Bluetooth Modified Hopping Sequences (BFTBMH) 有权
    使用蓝牙修改跳跃序列(BFTBMH)发送的波束形成

    公开(公告)号:US20060280143A1

    公开(公告)日:2006-12-14

    申请号:US11466270

    申请日:2006-08-22

    IPC分类号: H04Q7/00 H04L12/56

    摘要: A communication circuit (28) is designed with a signal processing circuit (370) arranged to produce a first plurality of data signals and receive a second plurality of data signals. A transmit circuit (364) is coupled to receive the first plurality of data signals and transmit each data signal of the first plurality of data signals on a respective transmit frequency in a predetermined sequence of transmit frequencies. A receive circuit (362) is coupled to receive each data signal of the second plurality of data signals from a remote transmitter on the respective transmit frequency in the predetermined sequence. The receive circuit applies the second plurality of data signals to the signal processing circuit.

    摘要翻译: 通信电路(28)被设计成具有被配置为产生第一多个数据信号并接收第二多个数据信号的信号处理电路(370)。 发射电路(364)被耦合以接收第一多个数据信号,并且以预定的发射频率的顺序在相应的发射频率上发射第一多个数据信号的每个数据信号。 接收电路(362)被耦合以便以预定顺序在相应发射频率上从远程发射机接收第二多个数据信号的每个数据信号。 接收电路将第二多个数据信号施加到信号处理电路。

    Enhanced channel estimator, method of enhanced channel estimating and an OFDM receiver employing the same
    49.
    发明申请
    Enhanced channel estimator, method of enhanced channel estimating and an OFDM receiver employing the same 有权
    增强信道估计器,增强信道估计方法和采用该方法的OFDM接收机

    公开(公告)号:US20050265490A1

    公开(公告)日:2005-12-01

    申请号:US11136121

    申请日:2005-05-24

    IPC分类号: H04L25/02 H04L27/06 H04L27/26

    摘要: The present invention provides an enhanced channel estimator for use with an orthogonal frequency division multiplex (OFDM) receiver employing scattered pilot channel estimates. In one embodiment, the enhanced channel estimator includes a time interpolation estimator configured to provide time-interpolation channel estimates having at least one image for a portion of carriers having the scattered pilot channel estimates. The enhanced channel estimator also includes a frequency interpolation estimator coupled to the time interpolation estimator and configured to provide frequency-interpolation channel estimates for each carrier based on image suppression through balanced-error filtering.

    摘要翻译: 本发明提供了一种与使用分散导频信道估计的正交频分复用(OFDM)接收机一起使用的增强信道估计器。 在一个实施例中,增强信道估计器包括时间插值估计器,其被配置为提供对具有分散导频信道估计的载波的一部分具有至少一个图像的时间插值信道估计。 增强信道估计器还包括耦合到时间插值估计器并被配置为基于通过平衡误差滤波的图像抑制来为每个载波提供频率插值信道估计的频率内插估计器。

    Multi-mode radio piconet/scatternet
    50.
    发明申请
    Multi-mode radio piconet/scatternet 有权
    多模式收音机微微网/散网

    公开(公告)号:US20050181725A1

    公开(公告)日:2005-08-18

    申请号:US09942192

    申请日:2001-08-29

    IPC分类号: H04B7/00 H04L12/56

    摘要: A communication system 100 allows for heterogeneous piconets/scattenets 100 where in multiple modes 110, 112 of transmission, one of Bluetooth 110 and one or more other modes of transmission 112 are possible. While at the same time maintaining synchronization between all the different modes of transmission 110, 112 in a given piconet and across a scatternet 100. This allows for a communication device that can communicate using a plurality of transmission modes depending on the communication needs of the device.

    摘要翻译: 通信系统100允许异构微微网/散射100,其中在多模式110,112的传输,蓝牙110和一个或多个其它传输模式112之一是可能的。 而同时保持给定微微网中并且跨越散点网100的所有不同传输模式110,112之间的同步。 这允许根据设备的通信需要使用多个传输模式进行通信的通信设备。