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1. 发明申请

US20060171492A1 Adjustable RF receiver 失效
标题翻译：可调RF接收机
公开(公告)号：US20060171492A1
公开(公告)日：2006-08-03
申请号：US11079961
申请日：2005-03-15
申请人： Arya Behzad , Michael Kappes , Jason Trachewsky , Christopher Hansen
发明人： Arya Behzad , Michael Kappes , Jason Trachewsky , Christopher Hansen
IPC分类号： H04L27/06
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。

2. 发明申请

US20070111676A1 Baseband / RFIC interface for high throughput MIMO communications 失效
标题翻译：用于高吞吐量MIMO通信的基带/ RFIC接口
公开(公告)号：US20070111676A1
公开(公告)日：2007-05-17
申请号：US11527854
申请日：2006-09-27
申请人： Jason Trachewsky , Arya Behzad
发明人： Jason Trachewsky , Arya Behzad
IPC分类号： H04B1/16 , H04B1/02 , H04M1/00
CPC分类号： H04B1/0003
摘要： Analog signal paths are utilized between a baseband processor and a radio front end to support high throughput communications for a multiple in multiple out radio transceiver that support communications over two or more antennas. Specifically, analog differential I and Q path communication signals are exchanged between a radio front end core and a baseband processor to maximize throughput capacity for high data rate signals. Along the same lines, the impedances of traces and the interface are matched to reduce I/Q imbalance.
摘要翻译：模拟信号路径在基带处理器和无线电前端之间被利用，以支持用于支持两个或更多个天线上的通信的多输出无线电收发器中的多个通信的高吞吐量通信。具体地说，在无线电前端核心和基带处理器之间交换模拟差分I和Q路径通信信号以最大化高数据速率信号的吞吐能力。沿着相同的线路，跟踪和接口的阻抗匹配，以减少I / Q不平衡。

3. 发明申请

US20060221905A1 Master/slave oscillation production and distribution in a multiple RF transceiver system supporting MIMO operations 有权
标题翻译：支持MIMO操作的多RF收发器系统中的主/从振荡生产和分配
公开(公告)号：US20060221905A1
公开(公告)日：2006-10-05
申请号：US11168733
申请日：2005-06-28
申请人： Arya Behzad , Jason Trachewsky , R. Moorti
发明人： Arya Behzad , Jason Trachewsky , R. Moorti
IPC分类号： H04B7/216
CPC分类号： H04B1/40
摘要： A multiple input multiple output (MIMO) RF transceiver system includes a plurality of RF transceiver ICs, a crystal, and master oscillation coupling. Each of the plurality of RF transceiver ICs includes crystal oscillator circuitry. Crystal oscillator circuitry of the first RF transceiver IC and a crystal are operable to produce a master oscillation. Master oscillation coupling couples the master oscillation produced by the first RF transceiver IC to the at least one other RF transceiver IC. In one embodiment, the master oscillation is passed from the first RF transceiver IC to each other transceiver RF ICs. In another embodiment, the master oscillation is used to produce a slave oscillation at a second RF transceiver IC and subsequent RF transceiver ICs produce there own slave oscillation based upon a slave oscillation received from a prior RF transceiver IC.
摘要翻译：多输入多输出（MIMO）RF收发器系统包括多个RF收发器IC，晶体和主振荡耦合。多个RF收发器IC中的每一个包括晶体振荡器电路。第一RF收发器IC和晶体的晶体振荡器电路可操作以产生主振荡。主振荡耦合将由第一RF收发器IC产生的主振荡耦合到至少一个其它RF收发器IC。在一个实施例中，主振荡从第一RF收发器IC传递到彼此的收发器RF IC。在另一个实施例中，主振荡用于在第二RF收发器IC产生从动振荡，并且随后的RF收发器IC基于从先前RF收发器IC接收的从动振荡而产生自身的从动振荡。

4. 发明授权

US08213395B2 Method and system for dual mode operation in wireless networks 有权
标题翻译：无线网络中双模式操作的方法和系统
公开(公告)号：US08213395B2
公开(公告)日：2012-07-03
申请号：US12402118
申请日：2009-03-11
申请人： Jason Trachewsky , Christopher Hansen , Jeyhan Karaoguz , Saishankar Nandogopalan
发明人： Jason Trachewsky , Christopher Hansen , Jeyhan Karaoguz , Saishankar Nandogopalan
IPC分类号： H04W4/00
CPC分类号： H04W72/04 , H04L27/0012 , H04W8/005 , H04W48/08 , H04W48/16 , H04W72/00 , H04W84/18 , H04W84/20 , H04W88/06
摘要： Aspects of a method and system for dual mode operation in wireless networks are presented. Aspects of the system include a communicating device that selects an RF channel and a physical layer type. The communicating device may process signals received via the selected RF channel based on the selected physical layer type. The communicating device may determine whether a beacon frame has been detected base on the signals that were received via the selected RF channel and processed based on the selected physical layer type. When a frame is not detected, the communicating device may determine a signal energy level for the received signals. The communicating device may establish an association with an existing network based on detection of the beacon frame or the communicating device may transmit an originating beacon frame based on the determined signal energy level.
摘要翻译：提出了无线网络中双模式操作的方法和系统方面。系统的方面包括选择RF信道和物理层类型的通信设备。通信设备可以基于所选择的物理层类型来处理经由所选择的RF信道接收的信号。通信设备可以基于经由所选择的RF信道接收到的信号来确定是否已经检测到信标帧，并且基于所选择的物理层类型进行处理。当没有检测到帧时，通信设备可以确定接收信号的信号能级。通信设备可以基于信标帧的检测来建立与现有网络的关联，或者通信设备可以基于确定的信号能级来发送始发信标帧。

5. 发明申请

US20060088120A1 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：US20060088120A1
公开(公告)日：2006-04-27
申请号：US11079962
申请日：2005-03-15
申请人： Christopher Hansen , Jason Trachewsky , R. Moorti , Christopher Young
发明人： Christopher Hansen , Jason Trachewsky , R. Moorti , Christopher Young
IPC分类号： H04L1/02
CPC分类号： H04B7/0613
摘要： A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for a first transmit antenna of the MIMO communication, generating a legacy preamble portion for the frame in accordance with a legacy wireless communication protocol, wherein the legacy preamble portion includes at least a first training sequence and a second training sequence and generating a current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication. The processing continues, for at least a second antenna of the MIMO communication, by generating a cyclically shifted legacy preamble portion for the frame, wherein the cyclically shifted legacy preamble portion includes at a cyclically shifted first training sequence and a cyclically shifted second training sequence, wherein the cyclically shifted first training sequence is time-shifted with respect to the first training sequence by a fraction of duration of the legacy preamble portion, and wherein the cyclically shifted second training sequence is time-shifted with respect to the second training sequence by the fraction of duration of the legacy preamble portion and generating a second current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication.
摘要翻译：用于产生用于多输入多输出（MIMO）无线通信的帧的前同步码的方法由MIMO通信的第一发射天线开始，根据传统无线通信协议为该帧生成遗留前导码部分，其中所述传统前同步码部分至少包括第一训练序列和第二训练序列，并且根据所述MIMO无线通信的协议生成所述帧的当前协议前同步码部分。对于MIMO通信的至少第二天线，通过为该帧生成循环移位的传统前同步码部分，该处理继续进行，其中循环移位的传统前同步码部分包括循环移位的第一训练序列和循环移位的第二训练序列，其中所述循环移位的第一训练序列相对于所述第一训练序列经过所述遗留前导码部分的持续时间的一小部分被时移，并且其中所述循环移位的第二训练序列相对于所述第二训练序列被时移根据MIMO无线通信的协议，为传统前同步码部分的持续时间的分数，并为该帧生成第二当前协议前同步码部分。

6. 发明申请

US20050232370A1 Long training sequence for MIMO WLAN systems 有权
标题翻译： MIMO WLAN系统的长训练序列
公开(公告)号：US20050232370A1
公开(公告)日：2005-10-20
申请号：US10929313
申请日：2004-08-30
申请人： Jason Trachewsky , R. Moorti , Christopher Hansen
发明人： Jason Trachewsky , R. Moorti , Christopher Hansen
IPC分类号： H04B7/06 , H04L27/26 , H04K1/10
CPC分类号： H04B7/0613
摘要： A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of preambles includes a carrier detection sequence at a legacy transmit rate, a first channel sounding at the legacy transmit rate, a signal field at the legacy transmit rate, and Z−1 channel soundings at a MIMO transmit rate, where L corresponds to a number of channel soundings. The method continues by simultaneously transmitting the plurality of preambles via the plurality of transmit antennas.
摘要翻译：用于配置多输入多输出（MIMO）无线通信的方法开始于为多个发射天线生成多个前同步码。多个前导码中的每一个包括传统发送速率的载波检测序列，以传统发送速率发声的第一信道，传统发送速率的信号字段和MIMO发送速率的Z-1信道探测，其中L 对应于多个通道探测。该方法通过经由多个发射天线同时发送多个前导码来继续。

7. 发明申请

US20050180525A1 Method and system for encoding a signal for wireless communications 失效
标题翻译：用于编码无线通信信号的方法和系统
公开(公告)号：US20050180525A1
公开(公告)日：2005-08-18
申请号：US11056159
申请日：2005-02-14
申请人： Christopher Hansen , Jason Trachewsky , Rajendra Moorti
发明人： Christopher Hansen , Jason Trachewsky , Rajendra Moorti
IPC分类号： H04L27/12 , H04L27/20
CPC分类号： H03M13/2906 , H03M13/1102 , H03M13/1515 , H03M13/2936 , H03M13/2957 , H03M13/6362 , H04L1/0065 , H04L1/0071 , H04L27/2627
摘要： Method and system encodes a signal according to a code rate that includes a ratio of uncoded bits to coded bits. An outer Reed-Solomon encoder encodes the signal into codewords. An interleaver converts the codewords into bits of frames for wireless transmission. An inner encoder executes a convolutional code to generate an encoded signal. The encoded signal is transmitted over a plurality of subcarriers associated with a wide bandwidth channel. The convolutional code is punctured and code states are added by the inner encoder to improve the code rate.
摘要翻译：方法和系统根据包括未编码位与编码位的比率的码率对信号进行编码。外部Reed-Solomon编码器将信号编码成码字。交织器将码字转换成用于无线传输的帧的比特。内部编码器执行卷积码以产生编码信号。经编码的信号在与宽带宽信道相关的多个子载波上传输。卷积码被打孔，内编码器加上码状态，以提高码率。

8. 发明申请

US20050180360A1 Preamble formats for MIMO wireless communications 有权
标题翻译：用于MIMO无线通信的前导格式
公开(公告)号：US20050180360A1
公开(公告)日：2005-08-18
申请号：US10973595
申请日：2004-10-26
申请人： Christopher Hansen , Jason Trachewsky , R. Moorti , Matthew Fischer , Christopher Young
发明人： Christopher Hansen , Jason Trachewsky , R. Moorti , Matthew Fischer , Christopher Young
IPC分类号： H04B7/06 , H04L12/28 , H04L27/26 , H04Q7/20
CPC分类号： H04B7/0667
摘要： A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field.
摘要翻译：用于生成多输入多输出（MIMO）无线通信的帧的前同步码的方法，针对MIMO无线通信的每个发射天线开始，生成载波检测场，其中，从发射天线到发射天线，载波检测场循环移位。对于MIMO无线通信的发射天线的第一组，该方法继续：产生载波检测域之后的第一保护间隔; 以及产生至少一个信道探测场，其中，从所述第一组中的发射天线到所述发射天线，所述至少一个信道探测场被循环移位，并且其中所述至少一个信道探测场跟随所述第一保护间隔。当MIMO无线通信包括多于发射天线的第一组合时，该方法继续用于发射天线的另一组：产生至少一个其它信道探测场，其中从另一组中的发射天线到发射天线，所述至少一个其它信道探测场被循环移位，并且其中所述至少一个其它信道探测场跟随所述至少一个信道探测场; 以及在所述至少一个其它信道探测场之前产生所述第一保护间隔。

9. 发明申请

US20120236838A1 DUAL MODE OPERATION IN A WIRELESS NETWORK 有权
标题翻译：无线网络中的双模操作
公开(公告)号：US20120236838A1
公开(公告)日：2012-09-20
申请号：US13484623
申请日：2012-05-31
申请人： Jason Trachewsky , Christopher Hansen , Jeyhan Karaoguz , Saishankar Nandogopalan
发明人： Jason Trachewsky , Christopher Hansen , Jeyhan Karaoguz , Saishankar Nandogopalan
IPC分类号： H04W84/12 , H04J11/00 , H04W24/00 , H04W88/02
CPC分类号： H04W72/04 , H04L27/0012 , H04W8/005 , H04W48/08 , H04W48/16 , H04W72/00 , H04W84/18 , H04W84/20 , H04W88/06
摘要： Provided is dual mode operation by a communicating device in wireless network. The communicating device selects a radio frequency (RF) channel and a physical layer type. The communicating device processes signals received via the selected RF channel based on the selected physical layer type. The communicating device may determine whether a beacon frame has been detected base on the signals that were received via the selected RF channel and processed based on the selected physical layer type. When a frame is not detected, the communicating device may determine a signal energy level for the received signals. The communicating device may establish an association with an existing network based on detection of the beacon frame or the communicating device may transmit an originating beacon frame based on the determined signal energy level.
摘要翻译：提供无线网络中通信设备的双模操作。通信设备选择射频（RF）信道和物理层类型。通信设备基于所选择的物理层类型处理经由所选择的RF信道接收的信号。通信设备可以基于经由所选择的RF信道接收到的信号来确定是否已经检测到信标帧，并且基于所选择的物理层类型进行处理。当没有检测到帧时，通信设备可以确定接收信号的信号能级。通信设备可以基于信标帧的检测来建立与现有网络的关联，或者通信设备可以基于确定的信号能级来发送始发信标帧。

10. 发明申请

US20070268881A1 HIGH DATA THROUGHPUT WLAN FRAME FORMAT 有权
标题翻译：高数据通路WLAN帧格式
公开(公告)号：US20070268881A1
公开(公告)日：2007-11-22
申请号：US11833429
申请日：2007-08-03
申请人： Tushar Moorti , Christopher Hansen , Jason Trachewsky
发明人： Tushar Moorti , Christopher Hansen , Jason Trachewsky
IPC分类号： H04Q7/24
CPC分类号： H04W99/00 , H04L5/0023 , H04L5/0048 , H04L5/0091 , H04L25/0204 , H04L25/0226 , H04L27/2602 , H04W84/12 , Y10S370/901 , Y10S370/908
摘要： A frame format for high data throughput wireless local area network transmissions includes a first preamble segment, a second preamble segment, and a variable length data segment. The first preamble segment includes at least one training sequence and a high throughput channel indication. The second preamble segment includes a high data throughput training sequence when the high throughput channel indication is set and includes a null segment when the high data throughput training sequence is not set.
摘要翻译：用于高数据吞吐量无线局域网传输的帧格式包括第一前同步码段，第二前同步码段和可变长度数据段。第一前导段包括至少一个训练序列和高吞吐量信道指示。当高吞吐量信道指示被设置并且当没有设置高数据吞吐量训练序列时包括空分段时，第二前导码段包括高数据吞吐量训练序列。

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