专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20110228875A1 MODIFIED PREAMBLE FOR PROGRAMMABLE TRANSMITTER 有权
标题翻译：可编程发射机的修改前缀
公开(公告)号：US20110228875A1
公开(公告)日：2011-09-22
申请号：US13116227
申请日：2011-05-26
申请人： Jason A. Trachewsky , Rajendra Tushar Moorti , Christopher J. Hansen
发明人： Jason A. Trachewsky , Rajendra Tushar Moorti , Christopher J. Hansen
IPC分类号： H04L27/00
CPC分类号： H04L27/2613 , H04L1/0002 , H04L1/0025 , H04L1/06
摘要： A programmable transmitter generates a frame preamble to train a receiver with respect to a communication link format that corresponds to a transmission mode wherein the transmission mode may comprise transmitting the communication link over one or more antennas. Generally, the invention includes generating a preamble with an arrangement that depends upon whether a Greenfield (high data rate) or mixed mode transmission is to occur and that depends upon a number of spatial streams that are to be generated. One format for high data rate transmission includes a short training sequence, a long training sequence and a signal field. The mixed mode transmission further includes a legacy prefix.
摘要翻译：可编程发射机产生帧前同步码，以针对对应于传输模式的通信链路格式来训练接收机，其中传输模式可以包括通过一个或多个天线发射通信链路。通常，本发明包括生成具有取决于是否要发生绿地（高数据速率）或混合模式传输并且取决于要生成的空间流的数量的布置的前导码。用于高数据速率传输的一种格式包括短训练序列，长训练序列和信号场。混合模式传输还包括传统前缀。

42. 发明授权

US07593692B2 Radar detection circuit for a WLAN transceiver 失效
标题翻译：用于WLAN收发器的雷达检测电路
公开(公告)号：US07593692B2
公开(公告)日：2009-09-22
申请号：US10815163
申请日：2004-03-31
申请人： Christopher J. Hansen , Jason A. Trachewsky
发明人： Christopher J. Hansen , Jason A. Trachewsky
IPC分类号： H04B17/00 , H04B1/26 , H04B15/00
CPC分类号： H04W16/14 , G01S7/021 , G01S7/023 , H04B1/1027 , H04K3/224 , H04K3/226 , H04K3/822 , H04K2203/18
摘要： A single chip radio transceiver includes circuitry that enables detection of radar signals to enable the radio transceiver to halt communications in overlapping communication bands to avoid interference with the radar transmitting the radar pulses. One design goal, however, is to avoid false triggers that result from spurious tones and omissions and that further detects radar signals even in circumstances in which a radar pulse has been masked or eliminated by interference. Accordingly, the radar detection block includes circuitry for detecting and measuring the radar signals in the presence of such interference. More specifically, the radar detection block includes a moving average filter, a threshold comparison state machine, and radar detection logic within software that is executed by a processor for determining whether a radar signal is present.
摘要翻译：单芯片无线电收发器包括能够检测雷达信号以使得无线电收发器能够在重叠通信频带中停止通信以避免干扰雷达发射雷达脉冲的电路。然而，一个设计目标是避免由虚假的音调和遗漏引起的错误触发，并且即使在雷达脉冲已经被干扰屏蔽或消除的情况下也可进一步检测雷达信号。因此，雷达检测块包括用于在存在这种干扰的情况下检测和测量雷达信号的电路。更具体地，雷达检测块包括由处理器执行的用于确定是否存在雷达信号的软件内的移动平均滤波器，阈值比较状态机和雷达检测逻辑。

43. 发明申请

US20090207827A1 HIGH DATA THROUGHPUT WIRELESS LOCAL AREA NETWORK RECEIVER 有权
标题翻译：高数据通信无线本地区网络接收器
公开(公告)号：US20090207827A1
公开(公告)日：2009-08-20
申请号：US12426911
申请日：2009-04-20
申请人： Tushar Moorti , Christopher J. Hansen , Jason A. Trachewsky
发明人： Tushar Moorti , Christopher J. Hansen , Jason A. Trachewsky
IPC分类号： H04W84/12
CPC分类号： H04W24/02 , H04B1/38 , H04L5/0023 , H04L5/0048 , H04L27/2605 , H04L27/2647 , H04W24/00 , H04W28/06 , H04W28/18 , H04W72/085 , H04W84/12 , Y10S370/901 , Y10S370/908
摘要： A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask.
摘要翻译：用于在高数据吞吐量无线局域网中接收帧的方法通过根据默认接收机滤波器掩码经由信道接收帧的前导码开始。该处理继续通过验证前导码。当前同步码被验证时，处理继续解释前导码以确定高数据吞吐量信道配置。该处理继续通过根据高数据吞吐量信道配置重新配置默认接收机滤波器掩码以产生重新配置的接收机滤波器掩码。该处理通过根据重新配置的接收机滤波器掩码接收帧的数据段而继续。

44. 发明授权

US08392786B2 LDPC coding systems for 60 GHz millimeter wave based physical layer extension 有权
公开(公告)号：US08392786B2
公开(公告)日：2013-03-05
申请号：US12435821
申请日：2009-05-05
申请人： Jason A. Trachewsky , Ba-Zhong Shen , Andrew J. Blanksby , Joonsuk Kim
发明人： Jason A. Trachewsky , Ba-Zhong Shen , Andrew J. Blanksby , Joonsuk Kim
IPC分类号： H03M13/00 , H03M13/03
CPC分类号： H04L1/0041 , H03M13/116 , H03M13/1185 , H03M13/6544 , H03M13/655 , H04L1/005 , H04L1/0057 , H04L1/0065 , H04L1/0071
摘要： LDPC coding systems for 60 GHz millimeter wave based physical layer extension. LDPC (Low Density Parity Check) encoding in cooperation with sub-carrier interleaving, in the context of orthogonal frequency division multiplexing (OFDM), and appropriate symbol mapping is performed in accordance with transmit processing as may be performed within a communication device. In a receiving communication device, receive processing may be performed on a received signal based on the type of LDPC, sub-carrier interleaving, and symbol mapping thereof. The LDPC code employed in accordance with such LDPC encoding may have a partial-tree like structure. In addition, appropriate manipulation of the bits assigned to respective sub-carriers may be performed to ensure that the bits emplaced in the MSB (Most Significant Bit) location of various symbols has some desired diversity (e.g., from different codewords, from appropriately different locations within a given codeword, etc.).

45. 发明授权

US09344535B2 Multiple protocol wireless communications in a WLAN 有权
标题翻译： WLAN中的多协议无线通信
公开(公告)号：US09344535B2
公开(公告)日：2016-05-17
申请号：US12711225
申请日：2010-02-23
申请人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Matthew James Fischer
发明人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Matthew James Fischer
IPC分类号： H04L29/06 , H04W80/00 , H04W84/12
CPC分类号： H04L69/18 , H04L69/24 , H04W80/00 , H04W84/12
摘要： A method for multiple protocol wireless communications begins by determining protocols of wireless communication devices within a proximal region. The method then continues by determining whether the protocols of the wireless communication devices within the proximal region are of a like protocol. The method continues by, when the protocols of the wireless communication devices within the proximal region are not of a like protocol, selecting a protocol of the protocols of the wireless communication devices within the proximal region based on a protocol ordering to produce a selected protocol. The method continues by utilizing the selected protocol by the wireless communication devices within the proximal region to set up a wireless communication within the proximal region.
摘要翻译：用于多协议无线通信的方法通过确定近端区域内的无线通信设备的协议来开始。该方法然后通过确定近端区域内的无线通信设备的协议是否具有类似协议来继续。当近端区域内的无线通信设备的协议不是类似的协议时，该方法继续进行，基于协议排序来选择在近端区域内的无线通信设备的协议的协议以产生所选择的协议。所述方法通过利用所述近端区域内的无线通信设备利用所选择的协议来建立所述近端区域内的无线通信。

46. 发明授权

US08891642B2 Mixed mode preamble for MIMO wireless communications 有权
标题翻译：用于MIMO无线通信的混合模式前导码
公开(公告)号：US08891642B2
公开(公告)日：2014-11-18
申请号：US13594203
申请日：2012-08-24
申请人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Christopher Young
发明人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti , Christopher Young
IPC分类号： H04L27/28 , H04B7/06
CPC分类号： H04B7/0613
摘要： A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication.
摘要翻译：用于MIMO通信的第一发射天线的多输入多输出（MIMO）无线通信的帧的前导码包括根据传统无线通信协议的传统前导码部分。用于第一发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的当前协议前同步码部分。用于MIMO通信的至少第二天线的帧的前导码包括用于该帧的循环移位的传统前同步码部分。用于第二发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的第二当前协议前同步码部分。

47. 发明授权

US08774327B2 Adjustable RF receiver 失效
标题翻译：可调RF接收机
公开(公告)号：US08774327B2
公开(公告)日：2014-07-08
申请号：US11079961
申请日：2005-03-15
申请人： Arya Reza Behzad , Michael S. Kappes , Jason A. Trachewsky , Christopher J. Hansen
发明人： Arya Reza Behzad , Michael S. Kappes , Jason A. Trachewsky , Christopher J. Hansen
IPC分类号： H03D1/00
CPC分类号： H04B1/28
摘要： The present invention provides adjusting of a radio frequency (RF) receiver that includes processing that begins by enabling an initial setting of the RF receiver, wherein the initial setting is based on a bandwidth of a channel of a plurality of channels. The processing continues by receiving an RF signal containing a preamble of a frame via one of the plurality of channels. The processing continues by converting the RF signal to a baseband signal based on the initial setting. The processing continues by determining channel type of the one of the plurality of channels based on the baseband signal. The processing continues by determining whether the channel type corresponds to the bandwidth of the initial setting. The processing continues by, when the channel type does not correspond to the bandwidth of the initial setting, adjusting setting of the RF receiver based on the channel type.
摘要翻译：本发明提供了一种射频（RF）接收机的调整，其包括通过启动RF接收机的初始设置而开始的处理，其中初始设置基于多个信道的信道的带宽。该处理通过经由多个信道中的一个接收包含帧的前同步码的RF信号而继续。该处理通过基于初始设置将RF信号转换为基带信号来继续。通过基于基带信号确定多个信道之一的信道类型来继续处理。通过确定信道类型是否对应于初始设置的带宽，继续处理。当通道类型不对应于初始设置的带宽时，处理继续，根据信道类型调整RF接收机的设置。

48. 发明授权

US08737189B2 Method and system for compromise greenfield preambles for 802.11n 有权
标题翻译： 802.11n的绿地前导码的方法和系统
公开(公告)号：US08737189B2
公开(公告)日：2014-05-27
申请号：US11151772
申请日：2005-06-09
申请人： Christopher J. Hansen , Rajendra T. Moorti , Jason A. Trachewsky
发明人： Christopher J. Hansen , Rajendra T. Moorti , Jason A. Trachewsky
IPC分类号： H04J11/00
CPC分类号： H04B7/0667 , H04B7/02 , H04B7/024 , H04B7/028 , H04B7/0404 , H04B7/0413 , H04B7/0452 , H04B7/0486 , H04B7/0495 , H04B7/0669 , H04L5/0026 , H04L5/0048 , H04L5/005 , H04L5/0051 , H04L5/0053 , H04L25/0226 , H04L25/03929 , H04L27/2613 , H04L29/06102 , H04L29/0653 , H04L29/0863 , H04L67/147 , H04L69/161 , H04W52/0225 , H04W52/52 , H04W84/12 , Y02D70/142 , Y02D70/442
摘要： Aspects of the invention described herein may enable a greenfield access mode in IEEE 802.11n WLAN systems in comparison to an alternative approach that may not provide greenfield access. The utilization of greenfield access may reduce the portion of time required to transmit data due to overhead comprising preamble fields and header fields. This may enable higher data throughput rates to be achieved. This may further enable more robust transmission of data by enabling comparable data rates to be maintained while reducing the coding rate of encoded transmitted data. The reduction of the coding rate may enable comparable data rates to be maintained for transmission via RF channels characterized by lower SNR while still achieving desired target levels of packet error rates. In another aspect of the invention, mixed mode access may be achieved while reducing the portion of time required for transmitting data due to overhead.
摘要翻译：与可能不提供绿地访问的替代方法相比，本文所述的本发明的方面可以实现IEEE 802.11n WLAN系统中的绿地接入模式。绿地访问的利用可以减少由于包括前导字段和报头字段的开销而发送数据所需的时间部分。这可以实现更高的数据吞吐率。这可以通过在减少编码的发送数据的编码率的同时保持可比较的数据速率来进一步实现数据的更鲁棒的传输。编码率的降低可以使得能够维持用于通过以较低SNR表征的RF信道的传输的可比数据速率，同时仍然实现期望的目标级别的分组错误率。在本发明的另一方面，可以在减少由于开销而发送数据所需的时间的部分的同时实现混合模式访问。

49. 发明授权

US08437362B2 Asymmetrical MIMO wireless communications 失效
标题翻译：不对称MIMO无线通信
公开(公告)号：US08437362B2
公开(公告)日：2013-05-07
申请号：US13558985
申请日：2012-07-26
申请人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
发明人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
IPC分类号： H04W76/00
CPC分类号： H04B7/0613 , H04B7/0413
摘要： A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.
摘要翻译：一种用于非对称MIMO无线通信的方法是通过确定用于非对称MIMO无线通信的多个发送天线来开始的。该方法通过确定用于非对称MIMO无线通信的接收天线的数量来继续。当发送天线的数量超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间时间块编码。当发送天线的数量不超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间复用。

50. 发明申请

US20120320885A1 MIXED MODE PREAMBLE FOR MIMO WIRELESS COMMUNICATIONS 有权
标题翻译：用于MIMO无线通信的混合模式前缀
公开(公告)号：US20120320885A1
公开(公告)日：2012-12-20
申请号：US13594203
申请日：2012-08-24
申请人： Christopher J. Hansen , Jason A. Trachewsky , R. Tushar Moorti , Christopher Young
发明人： Christopher J. Hansen , Jason A. Trachewsky , R. Tushar Moorti , Christopher Young
IPC分类号： H04W72/12
CPC分类号： H04B7/0613
摘要： A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame for the MIMO wireless communication for the first transmit antenna also includes a current protocol preamble portion in accordance with a protocol of the MIMO wireless communication. The preamble of a frame for at least a second antenna of the MIMO communication includes a cyclically shifted legacy preamble portion for the frame. The preamble of the frame for the MIMO wireless communication for the second transmit antenna also includes a second current protocol preamble portion in accordance with a protocol of the MIMO wireless communication.
摘要翻译：用于MIMO通信的第一发射天线的多输入多输出（MIMO）无线通信的帧的前导码包括根据传统无线通信协议的传统前导码部分。用于第一发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的当前协议前同步码部分。用于MIMO通信的至少第二天线的帧的前导码包括用于该帧的循环移位的传统前同步码部分。用于第二发射天线的MIMO无线通信的帧的前导码还包括根据MIMO无线通信的协议的第二当前协议前同步码部分。

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