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11. 发明授权

US08406204B2 Transmission of wide bandwidth signals in a network having legacy devices 有权
公开(公告)号：US08406204B2
公开(公告)日：2013-03-26
申请号：US11825868
申请日：2007-07-10
申请人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti
发明人： Christopher J. Hansen , Jason A. Trachewsky , Rajendra Tushar Moorti
IPC分类号： H04J3/00
CPC分类号： H04W16/14 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2613 , H04W24/00 , H04W84/12 , H04W88/06
摘要： A method for generating a preamble of a frame for a wide-bandwidth channel wireless communication begins by generating a legacy carrier detect field. The method continues by generating a channel sounding field, wherein the channel sounding field includes a plurality of tones within the wide-bandwidth channel, wherein a first set of the plurality of tones corresponds to tones of a legacy channel sounding field. The method continues by generating a legacy signal field, wherein, in time, the legacy signal field follows the channel sounding field, which follows the legacy carrier detect field.

12. 发明授权

US07558537B2 Modified preamble for programmable transmitter 有权
标题翻译：可编程发射机的修改前导码
公开(公告)号：US07558537B2
公开(公告)日：2009-07-07
申请号：US11403094
申请日：2006-04-11
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： H04B1/04
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。

13. 发明授权

US08520669B2 High data throughput wireless local area network receiver 有权
公开(公告)号：US08520669B2
公开(公告)日：2013-08-27
申请号：US13689985
申请日：2012-11-30
申请人： Rajendra Tushar Moorti , Christopher J. Hansen , Jason A. Trachewsky
发明人： Rajendra Tushar Moorti , Christopher J. Hansen , Jason A. Trachewsky
IPC分类号： H04L12/66 , H04W4/00
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.

14. 发明授权

US08170504B2 Modified preamble for programmable transmitter 有权
标题翻译：可编程发射机的修改前导码
公开(公告)号：US08170504B2
公开(公告)日：2012-05-01
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： H04B1/04
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。

15. 发明授权

US07974591B2 Modified preamble for programmable transmitter 有权
标题翻译：可编程发射机的修改前导码
公开(公告)号：US07974591B2
公开(公告)日：2011-07-05
申请号：US12498351
申请日：2009-07-06
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： H04B1/04
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。

16. 发明授权

US07583758B2 Carrier detection applicable for SISO, MIMO, MISO, and SIMO communications 有权
标题翻译：载波检测适用于SISO，MIMO，MISO和SIMO通信
公开(公告)号：US07583758B2
公开(公告)日：2009-09-01
申请号：US11402571
申请日：2006-04-12
申请人： Rohit V. Gaikwad , Rajendra Tushar Moorti , Jason A. Trachewsky
发明人： Rohit V. Gaikwad , Rajendra Tushar Moorti , Jason A. Trachewsky
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L27/2657
摘要： Carrier detection applicable for SISO, MIMO, MISO, and SIMO communications. A novel approach is presented to perform carrier detection for a signal found in any of a wide variety of communication systems including single-input-multiple-output (SISO), multiple-input-multiple-output (MIMO), multiple-input-single-output (MISO) single-input-multiple-output (SISO), communication systems. This novel approach to performing carrier detection is more robust than those approaches existent in the art. By employing normalization with respect to power in determining a modified correlation function, there is less susceptibility to false detects. Also, this approach is quite robust to any circuitry DC offsets that may undesirably exist within a communication device that undergoes operational changes due to a variety of factors including environmental perturbations and/or changes in processing circuitry within the communication device (e.g., changes in gain control).
摘要翻译：载波检测适用于SISO，MIMO，MISO和SIMO通信。提出了一种新颖的方法来对在各种各样的通信系统中发现的信号执行载波检测，包括单输入多输出（SISO），多输入多输出（MIMO），多输入单 - 输出（MISO）单输入多输出（SISO），通信系统。执行载波检测的这种新颖的方法比本领域中存在的那些方法更加鲁棒。通过在确定修正的相关函数中使用关于功率的归一化，对错误检测的敏感性较小。此外，该方法对于由于各种因素（包括环境扰动和/或通信设备内的处理电路的变化）而经历操作改变的通信设备中可能不期望地存在的任何电路DC偏移是相当鲁棒的控制）。

17. 发明授权

US08009759B2 Programmable transmitter 有权
标题翻译：可编程变送器
公开(公告)号：US08009759B2
公开(公告)日：2011-08-30
申请号：US12346367
申请日：2008-12-30
申请人： Joachim S. Hammerschmidt , Bruce E. Edwards , Venkat Kodavati , Rajendra Tushar Moorti , Ling Su , Jason A. Trachewsky , Andrew Wagner
发明人： Joachim S. Hammerschmidt , Bruce E. Edwards , Venkat Kodavati , Rajendra Tushar Moorti , Ling Su , Jason A. Trachewsky , Andrew Wagner
IPC分类号： H04L27/00
CPC分类号： H04W88/06 , H04B7/04
摘要： A programmable transmitter generates a frame in a frame format according to one of a plurality of operating modes using a frame structure table storing a respective frame format for each of the operating modes. The transmitter includes a frame structure engine that receives a mode selection signal indicative of a select operating mode, and accesses the frame structure table to determine the frame format of the select operating mode. The frame structure engine produces a control signal to a frame generator to control the generation of a frame in the frame format of the select operating mode.
摘要翻译：可编程发射机使用存储每种操作模式的相应帧格式的帧结构表，根据多种操作模式中的一种来生成帧格式的帧。发射机包括帧结构引擎，其接收指示选择操作模式的模式选择信号，并且访问帧结构表以确定选择操作模式的帧格式。帧结构引擎向帧发生器产生控制信号，以控制以选择操作模式的帧格式生成帧。

18. 发明授权

US07729378B2 Robust high-throughput frame for low-quality wireless channel conditions 失效
标题翻译：坚固的高吞吐量帧，用于低质量无线信道条件
公开(公告)号：US07729378B2
公开(公告)日：2010-06-01
申请号：US11504905
申请日：2006-08-16
申请人： Min Chuin Hoo , Rajendra Tushar Moorti , Jason A. Trachewsky
发明人： Min Chuin Hoo , Rajendra Tushar Moorti , Jason A. Trachewsky
IPC分类号： H04J3/16
CPC分类号： H04W99/00 , H04L1/0005 , H04L1/0007 , H04L1/0019 , H04L1/0039 , H04L1/06 , H04W84/12
摘要： A transceiver device for processing a frame in a wireless local area network, where the frame is one of several frame formats, which include a high throughput frame format. The transceiver device receives a frame having a training sequence, a signal field and a data payload, and processes the training sequence to detect which signal field length of a plurality of signal field lengths was used in the received frame. With the signal field length, the device processes the signal field based upon the detected signal field length to retrieve the data payload processing information.
摘要翻译：一种用于处理无线局域网中的帧的收发器设备，其中帧是包括高吞吐量帧格式的几种帧格式之一。收发器装置接收具有训练序列，信号字段和数据有效载荷的帧，并且处理训练序列以检测在接收帧中使用多个信号字段长度的信号字段长度。利用信号字段长度，设备基于检测到的信号字段长度处理信号字段以检索数据有效载荷处理信息。

19. 发明授权

US07813374B2 Multiple protocol wireless communication baseband transceiver 失效
标题翻译：多协议无线通信基带收发器
公开(公告)号：US07813374B2
公开(公告)日：2010-10-12
申请号：US11433997
申请日：2006-05-15
申请人： Rajendra Tushar Moorti , Jason A. Trachewsky , Joachim S. Hammerschmidt , Ling Su
发明人： Rajendra Tushar Moorti , Jason A. Trachewsky , Joachim S. Hammerschmidt , Ling Su
IPC分类号： H04J3/22
CPC分类号： H04L1/0068 , H04L1/0001 , H04L1/0041 , H04L1/0054 , H04L1/0071 , H04L1/0083
摘要： A multi-protocol wireless communication baseband transceiver includes a baseband transmit processing module and a baseband receive processing module. The baseband transmit processing module includes an encoding module, an interleaving module, a plurality of symbol mapping modules, a plurality of domain conversion modules, a plurality of cyclic prefix modules, a plurality of compensation modules, and a control module that is operably coupled to produce preamble set up information and payload set up information based on a mode of a plurality of protocol modes. The baseband receive processing module includes a plurality of receive compensation modules, a plurality of cyclic prefix removal modules, a plurality of receive domain conversion modules, an equalizing module, a plurality of demapping modules, a deinterleaving module, a decoding module, and a receive control module that is operably coupled to determine the mode from the plurality of protocol modes and the compensation control signals based on the at least one compensated stream of symbols.
摘要翻译：多协议无线通信基带收发器包括基带发射处理模块和基带接收处理模块。基带发送处理模块包括编码模块，交织模块，多个符号映射模块，多个域转换模块，多个循环前缀模块，多个补偿模块以及可操作地耦合到基于多个协议模式的模式产生前导码建立信息和有效负载建立信息。基带接收处理模块包括多个接收补偿模块，多个循环前缀去除模块，多个接收域转换模块，均衡模块，多个解映射模块，解交织模块，解码模块和接收器控制模块，其可操作地耦合以基于所述至少一个经补偿的符号流来确定来自所述多个协议模式的模式和所述补偿控制信号。

20. 发明授权

US07764741B2 Modulation-type discrimination in a wireless communication network 失效
标题翻译：无线通信网络中的调制类型辨别
公开(公告)号：US07764741B2
公开(公告)日：2010-07-27
申请号：US11695795
申请日：2007-04-03
申请人： Rajendra Tushar Moorti , Min Chuin Hoo , Jason A. Trachewsky
发明人： Rajendra Tushar Moorti , Min Chuin Hoo , Jason A. Trachewsky
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , H04L27/0012
摘要： A radio frequency receiver for discriminating a modulation type to decode a signal field of an encoded signal in a wireless communication system. The radio frequency (RF) receiver receives an encoded signal having a preamble training sequence associated with a frame, the preamble training sequence including the signal field. The radio frequency receive generates at least a first log-likelihood ratio (LLR) stream and a second LLR stream for each of a plurality of sub-symbols for a predetermined portion of the received encoded signal based upon an m-bit wide modulation reference, wherein m represents the bit width of the modulation reference. The first LLR stream and the second LLR stream each include a plurality of LLR values. The plurality of LLR values of the first LLR stream are summed to produce a first cumulative LLR, and the plurality of LLR values of the second LLR stream are summed to produce a second cumulative LLR. The first cumulative LLR is discriminated with the second cumulative LLR to produce a discriminated modulation type output. The receiver decodes the signal field based on the discriminated modulation type output.
摘要翻译：一种射频接收机，用于鉴别在无线通信系统中对编码信号的信号场进行解码的调制类型。射频（RF）接收机接收具有与帧相关联的前同步码训练序列的编码信号，前导码训练序列包括信号字段。基于m位宽调制参考，无线电频率接收对于接收的编码信号的预定部分的多个子符号中的每一个产生至少第一对数似然比（LLR）流和第二LLR流，其中m表示调制参考的位宽。第一LLR流和第二LLR流各自包括多个LLR值。将第一LLR流的多个LLR值相加以产生第一累积LLR，并且将第二LLR流的多个LLR值相加以产生第二累积LLR。第一累积LLR用第二累积LLR进行鉴别，以产生鉴别调制类型的输出。接收机根据鉴别出的调制类型输出对信号场进行解码。

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