Dual Packet Configuration for Wireless Communications
    11.
    发明申请
    Dual Packet Configuration for Wireless Communications 有权
    无线通信的双包配置

    公开(公告)号:US20070297382A1

    公开(公告)日:2007-12-27

    申请号:US11849579

    申请日:2007-09-04

    Abstract: A dual packet configuration for wireless communications including a first portion that is modulated according to a serial modulation and a second portion that is modulated according to a parallel modulation. The serial modulation may be DSSS whereas the parallel modulation may be OFDM. The first portion may include a header, which may further include an OFDM mode bit and a length field indicating the duration the second portion. The first portion may be in accordance with 802.11b to enable dual mode devices to coexist and communicate in the same area as standard 802.11b devices. The dual mode devices can communicate at different or higher data rates without interruption from the 802.11b devices. The packet configuration may include an OFDM signal symbol which further includes a data rate section and a data count section. In this manner, data rates the same as or similar to the 802.11a data rates may be specified between dual mode devices. The first and second portions may be based on the same or different clock fundamentals. For OFDM, the number of subcarriers, pilot tones and guard interval samples may be modified independently or in combination to achieve various embodiments. Also, data subcarriers may be discarded and replaced with pilot tones for transmission. The receiver regenerates the discarded data based on received data, such as using ECC techniques.

    Abstract translation: 一种用于无线通信的双包配置,包括根据串行调制被调制的第一部分和根据并行调制被调制的第二部分。 串行调制可以是DSSS,而并行调制可以是OFDM。 第一部分可以包括报头,报头还可以包括OFDM模式位和指示第二部分的持续时间的长度字段。 第一部分可以符合802.11b,以使得双模式设备能够在与标准802.11b设备相同的区域中共存和通信。 双模设备可以以不同或更高的数据速率进行通信,而不会中断802.11b设备。 分组配置可以包括还包括数据速率部分和数据计数部分的OFDM信号符号。 以这种方式,可以在双模式设备之间指定与802.11a数据速率相同或类似的数据速率。 第一和第二部分可以基于相同或不同的时钟基本原理。 对于OFDM,可以独立地或组合地修改子载波数,导频音和保护间隔样本的数量以实现各种实施例。 此外,可以丢弃数据副载波并用导频音来代替传输。 接收机基于接收的数据(例如使用ECC技术)重新生成丢弃的数据。

    Systems and methods for transmitter diversity expansion
    12.
    发明申请
    Systems and methods for transmitter diversity expansion 有权
    用于发射机分集扩展的系统和方法

    公开(公告)号:US20060270353A1

    公开(公告)日:2006-11-30

    申请号:US11411619

    申请日:2006-04-26

    CPC classification number: H04B7/0697 H04B7/0671 H04B7/0691

    Abstract: Methods and systems for transmitter diversity expansion are provided. The methods and systems include steps and modules for applying a number of data streams (K) to a larger number of antennas (N). This is performed by applying each of the data streams to a single base antenna, such that K data streams are applied to K base antennas, and by shifting and combining the K data streams to produce N-K data streams to apply to N-K extension antennas.

    Abstract translation: 提供了发射机分集扩展的方法和系统。 所述方法和系统包括用于将数个数据流(K)应用于更大数量的天线(N)的步骤和模块。 这通过将每个数据流应用于单个基本天线来执行,使得K个数据流被应用于K个基本天线,并且通过移位和组合K个数据流以产生应用于N-K个扩展天线的N-K个数据流。

    Packet generation systems and methods
    13.
    发明申请
    Packet generation systems and methods 有权
    数据包生成系统和方法

    公开(公告)号:US20060018249A1

    公开(公告)日:2006-01-26

    申请号:US11185665

    申请日:2005-07-20

    Abstract: Disclosed herein are various embodiments of methods, systems, and apparatus for increasing packet generation in a digital communication system. In one exemplary method embodiment, subcarriers are added to a packet in a wireless local area network transmission to increase the data rate.

    Abstract translation: 这里公开了用于在数字通信系统中增加分组生成的方法,系统和装置的各种实施例。 在一个示例性方法实施例中,子载波被添加到无线局域网传输中的分组以增加数据速率。

    Power-based hardware diversity
    15.
    发明申请
    Power-based hardware diversity 有权
    基于功率的硬件多样性

    公开(公告)号:US20050054383A1

    公开(公告)日:2005-03-10

    申请号:US10922985

    申请日:2004-08-23

    CPC classification number: H04B7/0608 H04B7/0808

    Abstract: A power-based hardware antenna diversity method for a wireless transceiver with multiple antennas is disclosed. The method is characterized in the steps of setting the transceiver gain at a maximum level to establish a first story of dynamic power range above a noise floor level, using a high-resolution ADC at a large back-off level relative to the noise floor to detect weak signals within the first story of the dynamic power range, switching antennas and measuring power level for each antenna during signal onset, and selecting an antenna having a largest power level.

    Abstract translation: 公开了一种用于具有多个天线的无线收发器的基于功率的硬件天线分集方法。 该方法的特征在于将收发器增益设置在最大电平的步骤,以建立高于噪声本底电平的动态功率范围的第一个故事,使用相对于本底噪声的大的后退电平的高分辨率ADC 在信号发起期间,检测动态功率范围的第一个故障中的弱信号,切换天线和测量每个天线的功率电平,以及选择具有最大功率电平的天线。

    Silicon-based schottky barrier detector with improved responsivity
    17.
    发明授权
    Silicon-based schottky barrier detector with improved responsivity 有权
    基于硅的肖特基势垒检测器,具有更高的响应度

    公开(公告)号:US08618625B2

    公开(公告)日:2013-12-31

    申请号:US13038470

    申请日:2011-03-02

    CPC classification number: H01L31/101 H01L31/1085

    Abstract: A planar, waveguide-based silicon Schottky barrier photodetector includes a third terminal in the form of a field plate to improve the responsivity of the detector. Preferably, a silicide used for the detection region is formed during a processing step where other silicide contact regions are being formed. The field plate is preferably formed as part of the first or second layer of CMOS metallization and is controlled by an applied voltage to modify the electric field in the vicinity of the detector's silicide layer. By modifying the electric field, the responsivity of the device is “tuned” so as to adjust the momentum of “hot” carriers (electrons or holes, depending on the conductivity of the silicon) with respect to the Schottky barrier of the device. The applied potential functions to align with the direction of momentum of the “hot” carriers in the preferred direction “normal” to the silicon-silicide interface, allowing for an increased number to move over the Schottky barrier and add to the generated photocurrent.

    Abstract translation: 平面的基于波导的硅肖特基势垒光电检测器包括场板形式的第三端子,以提高检测器的响应度。 优选地,在其中形成其它硅化物接触区域的处理步骤期间形成用于检测区域的硅化物。 场板优选地形成为第一或第二CMOS金属化层的一部分,并且通过施加的电压来控制,以修改检测器硅化物层附近的电场。 通过修改电场,器件的响应度被“调谐”,以相对于器件的肖特基势垒调节“热”载流子(电子或空穴,取决于硅的导电性)的动量。 所施加的电位功能与“硅”载体的优势方向“正常”硅硅化物界面的动量方向相一致,允许增加的数量移动到肖特基势垒上并增加产生的光电流。

    Optical interconnection arrangement for high speed, high density communication systems
    18.
    发明授权
    Optical interconnection arrangement for high speed, high density communication systems 有权
    用于高速,高密度通信系统的光互连布置

    公开(公告)号:US08364042B2

    公开(公告)日:2013-01-29

    申请号:US12796868

    申请日:2010-06-09

    Abstract: An optical interconnection arrangement for use in high data applications is presented that eliminates the need for extensive serialization/de-serialization (SERDES) functionality by utilizing pulse amplitude modulation (PAM) techniques to represent the data in the optical domain while utilizing a separate channel for transmitting an optical clock signal, eliminating the need for clock recovery circuitry on the receive end of the arrangement.

    Abstract translation: 提出了一种用于高数据应用的光互连装置,通过利用脉冲幅度调制(PAM)技术来表示光域中的数据,消除了对广泛的串行/解序列化(SERDES)功能的需要,同时利用单独的信道 发送光时钟信号,消除了对该装置接收端的时钟恢复电路的需要。

    Dopant profile control for high speed silicon-based optical modulators
    19.
    发明授权
    Dopant profile control for high speed silicon-based optical modulators 有权
    高速硅基光调制器的掺杂分布控制

    公开(公告)号:US08363986B2

    公开(公告)日:2013-01-29

    申请号:US13029342

    申请日:2011-02-17

    CPC classification number: G02B6/12 G02B6/26 G02B26/00 G02F1/025

    Abstract: A high speed silicon-based optical modulator with control of the dopant profiles in the body and gate regions of the device reduces the series resistance of the structure without incurring substantial optical power loss. That is, the use of increased dopant values in areas beyond the active region will allow for the series resistance to be reduced (and thus increase the modulating speed of the device) without incurring too large a penalty in signal loss. The dopant profiles within the gate and body regions are tailored to exhibit an intermediate value between the high dopant concentration in the contact areas and the low dopant concentration in the carrier integration window area.

    Abstract translation: 具有控制器件的主体和栅极区域中的掺杂剂分布的高速硅基光学调制器降低了结构的串联电阻而不会引起实质的光功率损耗。 也就是说,在有源区域之外的区域中使用增加的掺杂剂值将允许降低串联电阻(从而增加器件的调制速度),而不会在信号损失中造成太大的惩罚。 调整栅极和体区内的掺杂剂分布,以显示接触区域中的高掺杂剂浓度与载流子集成窗口区域中的低掺杂剂浓度之间的中间值。

    HDMI TMDS optical signal transmission using PAM technique
    20.
    发明授权
    HDMI TMDS optical signal transmission using PAM technique 有权
    使用PAM技术的HDMI TMDS光信号传输

    公开(公告)号:US08340529B2

    公开(公告)日:2012-12-25

    申请号:US12813562

    申请日:2010-06-11

    CPC classification number: H04N7/22 G09G5/006 G09G2370/12 G09G2370/18

    Abstract: An HDMI interconnect arrangement is presented that performs a pulse-amplitude modulation (PAM) conversion of the TMDS audio/video signals in order to simultaneously transmit all three channels over a single optical fiber. The set of three audio/video TMDS channels is applied as an input to a PAM-8 optical modulator, which functions to encode the set of three channels onto an optically-modulated output signal. The modulated optical signal is thereafter coupled into an optical fiber within an active HDMI cable and transmitted to an HDMI receiver (sink). The TMDS CLK signal is not included in this conversion into the optical domain, but remains as a separate electrical signal to be transmitted along a copper signal path within the active HDMI cable.

    Abstract translation: 呈现HDMI互连布置,其执行TMDS音频/视频信号的脉冲幅度调制(PAM)转换,以便通过单根光纤同时传输所有三个通道。 三组音频/视频TMDS通道的组合被用作PAM-8光调制器的输入,PAM-8光调制器用于将三个通道的组合编码到光调制的输出信号上。 调制的光信号此后耦合到有源HDMI电缆中的光纤中,并被传输到HDMI接收器(接收器)。 TMDS CLK信号不包含在该转换到光学域中,而是作为单独的电信号保持在有源HDMI电缆内的铜信号路径上传输。

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