专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20130058329A1 WIRELESS ROUTER SYSTEM 有权
标题翻译：无线路由器系统
公开(公告)号：US20130058329A1
公开(公告)日：2013-03-07
申请号：US13226133
申请日：2011-09-06
申请人： Nirmal C. Warke , Brad Kramer , Hassan Ali , Swaminathan Sankaran , Baher Haroun , Srinath Hosur , Martin J. Izzard
发明人： Nirmal C. Warke , Brad Kramer , Hassan Ali , Swaminathan Sankaran , Baher Haroun , Srinath Hosur , Martin J. Izzard
IPC分类号： H04L12/50
CPC分类号： H04L12/50 , G06F13/4022 , Y02D10/14 , Y02D10/151
摘要： Conventional routers employ a wired backplane that employs “long reach” serializer/deserializer (SerDes) links, but this type of architecture is complicated, costly, and uses a considerable amount of power. To address some of these issues, a new wireless backplane architecture is provided here. This wireless backplane employs direct millimeter wave links between line cards that replaces the convention, wired switching fabric.
摘要翻译：常规路由器采用使用长距离串行器/解串器（SerDes）链路的有线背板，但是这种类型的架构是复杂的，昂贵的并且使用相当大的功率。为了解决其中的一些问题，这里提供了一种新的无线背板架构。该无线背板在线路卡之间采用直接毫米波链接，取代了常规，有线交换结构。

22. 发明申请

US20120068891A1 CHIP TO DIELECTRIC WAVEGUIDE INTERFACE FOR SUB-MILLIMETER WAVE COMMUNICATIONS LINK 有权
标题翻译：切割到用于亚微波通信的电介质波导接口
公开(公告)号：US20120068891A1
公开(公告)日：2012-03-22
申请号：US12887323
申请日：2010-09-21
申请人： Baher S. Haroun , Marco Corsi , Siraj Akhtar , Nirmal C. Warke
发明人： Baher S. Haroun , Marco Corsi , Siraj Akhtar , Nirmal C. Warke
IPC分类号： H01Q1/24
CPC分类号： H01Q3/44 , H01L23/3107 , H01L23/66 , H01L24/16 , H01L24/48 , H01L24/49 , H01L2223/6677 , H01L2224/16225 , H01L2224/16227 , H01L2224/16245 , H01L2224/48227 , H01L2224/48247 , H01L2224/49175 , H01L2924/00014 , H01L2924/12041 , H01L2924/12042 , H01L2924/12043 , H01L2924/14 , H01L2924/3011 , H01Q3/26 , H01Q9/0407 , H01L2924/00 , H01L2224/45099 , H01L2224/45015 , H01L2924/207
摘要： In some developing interconnect technologies, such as chip-to-chip optical interconnect or metal waveguide interconnects, misalignment can be a serious issue. Here, however, a interconnect that uses an on-chip directional antenna (which operates in the sub-millimeter range) to form a radio frequency (RF) interconnect through a dielectric waveguide is provided. This system allows for misalignment while providing the increased communication bandwidth.
摘要翻译：在一些开发的互连技术中，例如芯片到芯片的光学互连或金属波导互连，错位可能是一个严重的问题。然而，这里提供了使用片上定向天线（其在亚毫米范围内操作）通过介质波导形成射频（RF）互连的互连。该系统允许不对准，同时提供增加的通信带宽。

23. 发明申请

US20080159448A1 System and method for crosstalk cancellation 审中-公开
标题翻译：用于串扰消除的系统和方法
公开(公告)号：US20080159448A1
公开(公告)日：2008-07-03
申请号：US11647993
申请日：2006-12-29
申请人： Kofi Dankwa Anim-Appiah , Nirmal C. Warke
发明人： Kofi Dankwa Anim-Appiah , Nirmal C. Warke
IPC分类号： H04B1/10
CPC分类号： H04B3/32 , H04L25/0204
摘要： System and method for canceling crosstalk in high-speed communications systems. An embodiment comprises precomputing channel pulse responses for a set of communications channels in a communications backplane, precomputing channel signal responses for the set of communications channels in the backplane with a training sequence, estimating noise coefficients using receiver training and the training sequence, storing noise coefficients for each communications channel in the set of communications channels, and canceling noise in a received transmission of a data sequence using the stored noise coefficients. The regularity of the communications backplane enables the precomputing of various values, which reduces computational requirements. Furthermore, it is often the case that a victim receiver has access to the digital data that is being transmitted by its dominant crosstalking transmitters, thereby simplifying noise cancellation.
摘要翻译：用于消除高速通信系统串扰的系统和方法。一个实施例包括对通信背板中的一组通信信道预先计算信道脉冲响应，对具有训练序列的背板中的该组通信信道的预计算信道信号响应，使用接收机训练估计噪声系数和训练序列，存储噪声系数对于该组通信信道中的每个通信信道，以及使用所存储的噪声系数来消除数据序列的接收发送中的噪声。通信背板的规则性能够预先计算各种值，从而减少计算量。此外，通常情况下，受害者接收机可以访问由其主要串扰发射机发送的数字数据，从而简化噪声消除。

24. 发明授权

US07194024B2 Method for adaptive hybrid selection during ADSL modem training 有权
标题翻译： ADSL调制解调器训练期间自适应混合选择的方法
公开(公告)号：US07194024B2
公开(公告)日：2007-03-20
申请号：US10354225
申请日：2003-01-29
申请人： Nirmal C. Warke , Susan Yim
发明人： Nirmal C. Warke , Susan Yim
IPC分类号： H04B1/38
CPC分类号： H04L27/0002 , H04L27/2601
摘要： The methodology accomplishes adaptive hybrid selection during ADSL modem training. The adaptive hybrid selection method maximizes performance for ADSL modems in the presence of various impairments on the line by optimally selecting the appropriate hybrid based on line conditions. Specifically, the adaptive hybrid selection method is based on a measure directly coupled to the channel capacity.
摘要翻译：该方法在ADSL调制解调器训练期间完成自适应混合选择。自适应混合选择方法通过基于线路条件优化选择适当的混合来在线路上存在各种损伤的情况下使ADSL调制解调器的性能最大化。具体地，自适应混合选择方法基于直接耦合到信道容量的度量。

25. 发明申请

US20130300627A1 TERMINATIONLESS POWER SPLITTER/COMBINER 有权
公开(公告)号：US20130300627A1
公开(公告)日：2013-11-14
申请号：US13466956
申请日：2012-05-08
申请人： Swaminathan Sankaran , Nirmal C. Warke , Hassan Ali , Brad Kramer
发明人： Swaminathan Sankaran , Nirmal C. Warke , Hassan Ali , Brad Kramer
IPC分类号： H01P5/22 , H01P11/00 , H01Q21/00
CPC分类号： H01P5/222 , H01P5/16 , H01Q3/26 , H01Q21/0075 , Y10T29/49016
摘要： An apparatus is provided. First and second hybrid couplers are provided with each having a first port, a second port, a third port, a fourth port and with each being substantially curvilinear. The fourth ports of the first and second hybrid couplers are first and second isolation port that are mutually coupled. The first port of the first hybrid coupler is configured to carry a first portion of a differential signal, and the first port of the second hybrid coupler is configured to carry a second portion of the differential signal.

26. 发明申请

US20130106641A1 CARRIER FREQUENCY OFFSET COMPENSATION IN BEAMFORMING SYSTEMS 有权
标题翻译：波束形成系统中的载波频偏补偿
公开(公告)号：US20130106641A1
公开(公告)日：2013-05-02
申请号：US13284606
申请日：2011-10-28
申请人： Nirmal C. Warke , Srinath Hosur , Venugopal Gopinathan
发明人： Nirmal C. Warke , Srinath Hosur , Venugopal Gopinathan
IPC分类号： H01Q3/00 , G01S13/02
CPC分类号： H04L27/0014 , H04B7/0617 , H04B7/086 , H04L2027/0016 , H04L2027/0018 , H04L2027/0028
摘要： A method for communicating signals in an ultra high bandwidth system that compensates for carrier frequency offset is provided. A baseband transmit signal having a plurality of data bits is generated. The baseband transmit signal is upconverted to a radio frequency (RF) transmit signal using a first local oscillator signal having a first carrier frequency. An offset cancellation for the offset between the first carrier frequency and a second carrier frequency for a second local oscillator signal that is used to downconvert an RF receive signal is calculated. The offset cancellation is applied to a plurality of phase rotators, and the RF transmit signal is transmitted over a phased array.
摘要翻译：提供了一种用于在补偿载波频率偏移的超高带宽系统中传送信号的方法。产生具有多个数据位的基带发送信号。使用具有第一载波频率的第一本机振荡器信号将基带发射信号上变频到射频（RF）发射信号。计算用于下变频RF接收信号的第二本地振荡器信号的第一载波频率和第二载波频率之间的偏移的偏移消除。偏移消除被应用于多个相位旋转器，并且RF发送信号通过相控阵列发送。

27. 发明授权

US07801204B2 Estimation of BER performance 有权
标题翻译： BER性能估计
公开(公告)号：US07801204B2
公开(公告)日：2010-09-21
申请号：US11441643
申请日：2006-05-26
申请人： Nirmal C. Warke
发明人： Nirmal C. Warke
IPC分类号： H04B17/00 , H03H7/30 , H04W4/00
CPC分类号： H04B17/309 , H04B17/26
摘要： A method to determine bit error rate (BER) for a given channel of a communication system includes determining a first statistical representation of at least one deterministic source of noise for the given channel. A parametric statistical representation having parameters that model non-deterministic noise is defined for the given channel and values for the parameters of the parametric statistical representation are estimated to provide a second statistical representation for the non-deterministic noise based on at least one of measurements and simulations performed for the given channel. The BER of the given channel is estimated as a function of the first and second statistical representations.
摘要翻译：确定通信系统的给定信道的误码率（BER）的方法包括确定给定信道的至少一个确定性噪声源的第一统计表示。为给定的通道定义具有对非确定性噪声进行建模的参数的参数统计表示，并且估计参数统计表示的参数的值，以提供基于以下至少一个的非确定性噪声的第二统计表示：测量和对给定通道进行模拟。估计给定信道的BER是第一和第二统计表示的函数。

28. 发明授权

US07274736B2 Multiple path equalization for multicarrier systems 有权
标题翻译：多载波系统的多路径均衡
公开(公告)号：US07274736B2
公开(公告)日：2007-09-25
申请号：US10274322
申请日：2002-10-18
申请人： Arthur John Redfern , Nirmal C. Warke , Ming Ding
发明人： Arthur John Redfern , Nirmal C. Warke , Ming Ding
IPC分类号： H04B3/14 , H04B1/66 , H04B15/00 , H04B1/10 , H04N7/12
CPC分类号： H04L25/03019 , H04L25/03159 , H04L2025/03414
摘要： A dual path equalization structure is used to equalize DMT systems operating over channels in which different impairments dominate the performance of different parts of the channel. Two TEQ/DFT structures are used to process the received signal, each optimized for a different part of the channel. The outputs of the two paths are combined with appropriate frequency-domain equalization to achieve an overall equalization architecture which is better optimized for the whole channel.
摘要翻译：双路均衡结构用于均衡DMT系统，其通过不同的损伤来控制通道不同部分的性能。使用两个TEQ / DFT结构来处理接收的信号，每个结构针对信道的不同部分进行优化。两个路径的输出与适当的频域均衡相结合，以实现对整个信道进行优化的整体均衡架构。

29. 发明授权

US07184472B2 Time domain equalizer and method 有权
标题翻译：时域均衡器和方法
公开(公告)号：US07184472B2
公开(公告)日：2007-02-27
申请号：US10384467
申请日：2003-03-07
申请人： Nirmal C. Warke , Arthur J. Redfern
发明人： Nirmal C. Warke , Arthur J. Redfern
IPC分类号： H03H7/30
CPC分类号： H04L25/03012 , H04L2025/03414 , H04L2025/03484 , H04L2025/03611
摘要： Time domain equalizer determination for discrete multitone systems by tone error minimization from a starting point of a single-tone equalizer.
摘要翻译：通过单音均衡器起始点的色调误差最小化对离散多音系统进行时域均衡。

30. 发明授权

US07031400B2 Method of selecting a PCM modem signal constellation in relation to channel impairments 有权
公开(公告)号：US07031400B2
公开(公告)日：2006-04-18
申请号：US10102415
申请日：2002-03-20
申请人： Nirmal C. Warke , Murtaza Ali
发明人： Nirmal C. Warke , Murtaza Ali
IPC分类号： H04L27/04 , H04B17/00
CPC分类号： H04B14/04 , H04L25/4927
摘要： Disclosed are methods of selecting a multi-dimensional signal constellation in relation to impairments in a communication system having a data frame consisting of a fixed number of symbols. The methods make use of impairments detected from a Digital Impairment Learning sequence (DIL) and channel impairments, such as POE and SNR. Signal points are individually assigned to each symbol in a data frame in relation to that symbol's particular digital impairments and a pre-selected minimum performance level and maximum power constraints.

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