专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20180175905A1 SYSTEMS AND METHODS FOR SPECTRALLY EFFICIENT AND ENERGY EFFICIENT ULTRA-WIDEBAND IMPULSE RADIOS AND SCALABLE DATA RATES 审中-公开
公开(公告)号：US20180175905A1
公开(公告)日：2018-06-21
申请号：US15578478
申请日：2016-05-31
申请人： TRANSFERT PLUS SOCIETE EN COMMANDITE
发明人： FREDERIC NABKI , DOMINIC DESLANDES , MOHAMMAD TAHERSZADEH-SANI , MICHIEL SOER
IPC分类号： H04B1/717 , H04L7/033 , H04B1/7183 , H04L25/03
CPC分类号： H04B1/717 , H04B1/1615 , H04B1/385 , H04B1/7183 , H04L7/00 , H04L7/033 , H04L25/00 , H04L25/03834 , H04L25/4902
摘要： Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Today's leading edge modulated sinusoidal wave wireless communication standards and systems achieve power efficiencies of 50 nJ/bit employing narrowband signaling schemes and traditional RF transceiver architectures. However, such designs severely limit the achievable energy efficiency, especially at lower data rates such as below 1 Mbps. Further, it is important that peak power consumption is supportable by common battery or energy harvesting technologies and long term power consumption neither leads to limited battery lifetimes or an inability for alternate energy sources to sustain them. Accordingly, it would be beneficial for next generation applications to exploit inventive transceiver structures and communication schemes in order to achieve the sub nJ per bit energy efficiencies required by next generation applications.

2. 发明申请

US20100246660A1 Pulse-Sync Demodulator 有权
标题翻译：脉冲同步解调器
公开(公告)号：US20100246660A1
公开(公告)日：2010-09-30
申请号：US12374737
申请日：2007-07-27
申请人： Michiaki Matsuo , Hideki Aoyagi , Hitoshi Asano , Kazuya Toki
发明人： Michiaki Matsuo , Hideki Aoyagi , Hitoshi Asano , Kazuya Toki
IPC分类号： H03K9/04
CPC分类号： H04L7/033 , H03L7/0807 , H03L7/0812 , H04B1/717 , H04B1/7183 , H04L7/0037
摘要： A received pulse signal based on an on-off keying modulation scheme is alternately sampled by AD conversion sections operated by a clock signal whose frequency is one-half of a transmission rate. In the synchronization, amounts of delay in sampling timing adjustment sections are made different from each other, whereby phases of two different points in a symbol pulse are sampled. An amount of delay in a variable delay section is adjusted in accordance with a result of comparison of the sampled values, thereby achieving synchronization. At the time of demodulation, the amount of delay in the variable delay section is held, and the amounts of delay in the sampling timing adjustment sections are switched to the same value, and the symbol pulse is alternately sampled. The sampled values are subjected to threshold value determination, and the determination result is subjected to parallel-to-serial conversion, whereby a demodulation output is acquired.
摘要翻译：基于开关键控调制方式的接收脉冲信号由频率为传输速率的二分之一的时钟信号操作的AD转换部分交替采样。在同步中，采样定时调整部分中的延迟量彼此不同，从而对符号脉冲中两个不同点的相位进行采样。根据采样值的比较结果调整可变延迟部分的延迟量，从而实现同步。在解调时，保持可变延迟部分中的延迟量，并将采样定时调整部分中的延迟量切换到相同的值，并且对符号脉冲进行交替采样。对采样值进行阈值判定，对判定结果进行并行到串行转换，从而得到解调输出。

3. 发明申请

US20070291892A1 System and method for wave damping 有权
标题翻译：波阻尼系统和方法
公开(公告)号：US20070291892A1
公开(公告)日：2007-12-20
申请号：US11807036
申请日：2007-05-25
申请人： Joseph Bobier , Nadeem Khan
发明人： Joseph Bobier , Nadeem Khan
IPC分类号： H04L23/00
CPC分类号： H03J1/00 , H03H9/6489 , H04B1/0458 , H04B1/717 , H04B1/7172 , H04B1/719
摘要： A system and method of damping the ringing response of Band Pass Filters for use in impulse and single cycle modulation systems which are capable of carrying a high data rate and which are severely affected by the ringing response of the Band Pass Filter.
摘要翻译：一种阻尼带通滤波器的振铃响应的系统和方法，用于脉冲和单周期调制系统，能够承载高数据速率，并受到带通滤波器振铃响应的严重影响。

4. 发明授权

US06636566B1 Method and apparatus for specifying pulse characteristics using a code that satisfies predefined criteria 有权
标题翻译：使用满足预定准则的代码指定脉冲特性的方法和装置
公开(公告)号：US06636566B1
公开(公告)日：2003-10-21
申请号：US09592288
申请日：2000-06-12
申请人： Mark D. Roberts , Marcus H. Pendergrass , Larry W. Fullerton , James L. Richards
发明人： Mark D. Roberts , Marcus H. Pendergrass , Larry W. Fullerton , James L. Richards
IPC分类号： H04B1406
CPC分类号： H04B1/717 , H04B1/71632 , H04B1/7176 , H04B2201/71638
摘要： A coding method for a pulse transmission system specifies temporal and/or non-temporal pulse characteristics according to temporal and/or non-temporal characteristic value layouts having one or more allowable and non-allowable regions. The method generates codes having predefined properties. The method generates a pulse train by mapping codes to the characteristic value layouts, where the codes satisfy predefined criteria. In addition, the predefined criteria can limit the number of pulse characteristic values within a non-allowable region. The predefined criteria can be based on relative pulse characteristic values. The predefined criteria can also pertain to spectral properties and to correlation properties. The predefined criteria may pertain to code length and to the number of members of a code family. The pulse train characteristics may pertain to a subset of the pulse train.
摘要翻译：用于脉冲传输系统的编码方法根据具有一个或多个允许和不允许区域的时间和/或非时间特征值布局来指定时间和/或非时间脉冲特性。该方法生成具有预定属性的代码。该方法通过将代码映射到特征值布局来生成脉冲序列，其中代码满足预定标准。此外，预定义的标准可以限制不允许区域内的脉冲特征值的数量。预定义的标准可以基于相对脉冲特征值。预定义的标准也可以涉及光谱性质和相关性质。预定义的标准可以涉及代码长度和代码族的成员数量。脉冲串特性可能与脉冲序列的子集有关。

5. 发明申请

US20180164395A1 METHOD AND APPARATUS FOR ACCELERATED MAGNETIC RESONANCE IMAGING 审中-公开
公开(公告)号：US20180164395A1
公开(公告)日：2018-06-14
申请号：US15837244
申请日：2017-12-11
申请人： Siemens Healthcare GmbH , The General Hospital Corporation
发明人： Kawin Setsompop , Thomas Beck , Berkin Bilgic , Daniel Polak
IPC分类号： G01R33/565 , H04B1/717 , G01R33/36 , A61B5/055
CPC分类号： G01R33/56572 , A61B5/055 , G01R33/36 , G01R33/4818 , G01R33/543 , G01R33/5602 , G01R33/5608 , G01R33/5611 , G01R33/5613 , H04B1/717
摘要： In a method for controlling a radio-frequency transmitter of a magnetic resonance imaging apparatus to apply an inversion pulse to a sample magnetization, in a multi-shot readout phase, a gradient system of the magnetic resonance imaging apparatus is controlled to apply a steady-state gradient echo readout sequence having at least one first phase-encoding gradient along a first direction, at least one second phase-encoding gradient along a second direction, and a sequence of readout gradients along a readout direction. In the multi-shot readout phase, the gradient system is controlled to apply first AC gradients along the first direction and at least partly contemporaneously with readout gradients of the sequence of readout gradients, and the gradient system is controlled to apply second AC gradients along the second direction and at least partly contemporaneously with the readout gradients of the sequence of readout gradients.

6. 发明申请

US20160211884A1 PULSE POSITION MODULATION SCHEME IMPULSE RADIO TRANSMITTER AND RADIO COMMUNICATION SYSTEM 有权
标题翻译：脉冲位置调制方案冲突无线电发射机和无线电通信系统
公开(公告)号：US20160211884A1
公开(公告)日：2016-07-21
申请号：US15081907
申请日：2016-03-27
申请人： FUJITSU LIMITED
发明人： YASUHIRO NAKASHA
IPC分类号： H04B1/7163 , H04B1/717
CPC分类号： H04B1/71635 , H04B1/717 , H04B1/7176
摘要： A pulse position modulation scheme impulse radio transmitter includes: a bipolar return-to-zero type short-pulse generator; a bandpass filter that has a predetermined pass frequency band and which allows an output of the bipolar return-to-zero type short-pulse generator to pass; a transmission amplifier that amplifies an output of the bandpass filter; and a transmission antenna, wherein the bipolar return-to-zero type short-pulse generator includes: a trigger flip-flop with a position modulation function that outputs a pulse-width-variable pulse in each period of a clock signal, the pulse-width-variable pulse being inverted in each period of the clock signal and the pulse width of the pulse-width-variable pulse differing in accordance with transmission data; and a pulse generation filter that generates a positive pulse or a negative pulse in accordance with a direction in which a varying edge of the pulse-width-variable pulse changes.
摘要翻译：脉冲位置调制方案脉冲无线电发射机包括：双极返回零型短脉冲发生器; 带通滤波器，其具有预定的通过频带，并且允许双极返回零型短脉冲发生器的输出通过; 放大带通滤波器的输出的发送放大器; 以及发送天线，其中所述双极性返回零型短脉冲发生器包括：具有在时钟信号的每个周期中输出脉冲宽度可变脉冲的位置调制功能的触发触发器，宽度可变脉冲在时钟信号的每个周期中反相，并且脉冲宽度可变脉冲的脉冲宽度根据传输数据而不同; 以及根据脉冲宽度可变脉冲的变化边缘改变的方向产生正脉冲或负脉冲的脉冲产生滤波器。

7. 发明授权

US07924936B2 System and method for wave damping 有权
标题翻译：波阻尼系统和方法
公开(公告)号：US07924936B2
公开(公告)日：2011-04-12
申请号：US11807036
申请日：2007-05-25
申请人： Joseph A. Bobier , Nadeem Khan
发明人： Joseph A. Bobier , Nadeem Khan
IPC分类号： H03C1/52 , H04L27/02
CPC分类号： H03J1/00 , H03H9/6489 , H04B1/0458 , H04B1/717 , H04B1/7172 , H04B1/719
摘要： A system and method of damping the ringing response of Band Pass Filters for use in impulse and single cycle modulation systems which are capable of carrying a high data rate and which are severely affected by the ringing response of the Band Pass Filter.
摘要翻译：一种阻尼带通滤波器的振铃响应的系统和方法，用于脉冲和单周期调制系统，能够承载高数据速率，并受到带通滤波器振铃响应的严重影响。

8. 发明申请

US20070237209A1 SPACE-TIME CODING METHOD FOR A UWB PULSE-TYPE MULTI-ANTENNA SYSTEM 有权
标题翻译：用于UWB脉冲型多天线系统的空时编码方法
公开(公告)号：US20070237209A1
公开(公告)日：2007-10-11
申请号：US11695276
申请日：2007-04-02
申请人： Chadi RJEILY
发明人： Chadi RJEILY
IPC分类号： H04B1/00 , H03K9/04 , H04L1/02
CPC分类号： H04L25/4902 , H04B1/71632 , H04B1/717
摘要： This invention relates to a space-time coding method for a UWB transmission system including three or four radiative elements. It also relates to a method for transmitting a plurality of data symbols belonging to a PPM modulation constellation or a PPM-PAM composite modulation constellation using this space-time coding.
摘要翻译：本发明涉及一种包含三个或四个辐射元件的UWB传输系统的时空编码方法。本发明还涉及使用该时空编码来发送属于PPM调制星座或PPM-PAM复合调制星座的多个数据符号的方法。

9. 发明授权

US08630329B2 High-speed sampling and low-precision quantification pulse ultra-wideband wireless communication method 有权
标题翻译：高速采样和低精度量化脉冲超宽带无线通信方式
公开(公告)号：US08630329B2
公开(公告)日：2014-01-14
申请号：US13498576
申请日：2009-09-28
申请人： Zaichen Zhang , Guangguo Bi , Xiaohu You , Liang Wu
发明人： Zaichen Zhang , Guangguo Bi , Xiaohu You , Liang Wu
IPC分类号： H04B1/00
CPC分类号： H04B1/7183 , H04B1/71632 , H04B1/717
摘要： For a demand of high speed, low cost and low power loss short distance wireless communication, a high-speed sampling and low-precision quantification pulse ultra-wideband wireless communication method is provided. A baseband narrow pulse sequence is generated at a transmission end using the digital technology by the method, and is transmitted after modulating amplifying and filtering and amplifying at a reception end, after the digital-signal processing of synchronizing, channel estimating, related detecting, and channel decoding, tec, is performed for the quantified data, the transmission information is retrieved. Comparing with the present carrier mechanism UWB wireless communication technology, the method does not need the complex radio frequency processing of orthogonal modulation/demodulation and frequency spectrum moving, etc, the quantification precision of analog-to-digital conversion is also decreased greatly, so the cost and power loss are greatly decreased; comparing with the present pulse mechanism UWB wireless communication technology, the method provided by the present invention greatly increase the data transmission rate, and increases the stability, reliability and integration.
摘要翻译：针对高速，低成本，低功耗短距离无线通信的需求，提供了高速采样和低精度定量脉冲超宽带无线通信方式。使用该方法的数字技术，在发送端生成基带窄脉冲序列，在进行同步，信道估计，相关检测和数字信号估计的数字信号处理之后，在接收端进行调制放大和滤波放大后发送对量化数据执行信道解码tec，检索发送信息。与现有载波机制UWB无线通信技术相比，该方法不需要正交调制/解调和频谱移动等复杂的射频处理，模数转换的量化精度也大大降低，成本和功率损耗大大降低; 与目前的脉冲机制UWB无线通信技术相比，本发明提供的方法大大提高了数据传输速率，提高了稳定性，可靠性和集成度。

10. 发明申请

US20130230077A1 COMMUNICATION SYSTEM, APPARATUS AND METHODS 审中-公开
标题翻译：通信系统，装置和方法
公开(公告)号：US20130230077A1
公开(公告)日：2013-09-05
申请号：US13721584
申请日：2012-12-20
申请人： METROPOLITAN AREA NETWORKS, INC.
发明人： Douglas Greenwood , William J. Chastain
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , H04B1/717 , H04B1/7176
摘要： A system, method and apparatus for wireless communications are provided. In an exemplary embodiment, frequency components present in a short duration modulated complex pulse is used to represent data to be sent. In other embodiments, the complex pulse is created, modulated, then modified to have desirable frequency characteristics. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.
摘要翻译：提供了一种用于无线通信的系统，方法和装置。在示例性实施例中，存在于短持续时间调制复数脉冲中的频率分量用于表示要发送的数据。在其他实施例中，复数脉冲被创建，调制，然后被修改为具有期望的频率特性。本摘要仅用于遵守允许读者快速确定本文所包含的披露的主题的抽象要求规则。本摘要以明确的理解提交，不会用于解释或限制权利要求的范围或含义。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式