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1. 发明申请

US20050185575A1 Asymmetrical mimo wireless communications 有权
标题翻译：不对称mimo无线通信
公开(公告)号：US20050185575A1
公开(公告)日：2005-08-25
申请号：US10979368
申请日：2004-11-01
申请人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
发明人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
IPC分类号： H04B7/04 , H04B7/06 , H04B7/08 , H04B7/216 , H04J11/00 , H04M1/00
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。

2. 发明申请

US20050186958A1 Multiple input multiple output wireless local area network communications 失效
标题翻译：多输入多输出无线局域网通信
公开(公告)号：US20050186958A1
公开(公告)日：2005-08-25
申请号：US10933586
申请日：2004-09-03
申请人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
发明人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
IPC分类号： H04L1/06 , H04Q7/20
CPC分类号： H04L1/0625 , H04L1/0059 , H04L1/0071
摘要： A wireless local area network (WLAN) transmitter includes a MAC module, a PLCP module, and a PMD module. The Medium Access Control (MAC) module is operably coupled to convert a MAC Service Data Unit (MSDU) into a MAC Protocol Data Unit (MPDU) in accordance with a WLAN protocol. The Physical Layer Convergence Procedure (PLCP) Module is operably coupled to convert the MPDU into a PLCP Protocol Data Unit (PPDU) in accordance with the WLAN protocol. The Physical Medium Dependent (PMD) module is operably coupled to convert the PPDU into a plurality of radio frequency (RF) signals in accordance with one of a plurality of operating modes of the WLAN protocol, wherein the plurality of operating modes includes multiple input and multiple output combinations.
摘要翻译：无线局域网（WLAN）发送机包括MAC模块，PLCP模块和PMD模块。媒体访问控制（MAC）模块可操作地耦合以根据WLAN协议将MAC服务数据单元（MSDU）转换成MAC协议数据单元（MPDU）。物理层会聚过程（PLCP）模块可操作地耦合，以根据WLAN协议将MPDU转换成PLCP协议数据单元（PPDU）。物理媒体相关（PMD）模块可操作地耦合以根据WLAN协议的多种操作模式之一将PPDU转换成多个射频（RF）信号，其中多个操作模式包括多个输入和多个输出组合。

3. 发明申请

US20050186986A1 WLAN transmitter having high data throughput 有权
标题翻译： WLAN发射机具有高数据吞吐量
公开(公告)号：US20050186986A1
公开(公告)日：2005-08-25
申请号：US10856023
申请日：2004-05-28
申请人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
发明人： Christopher Hansen , Jason Trachewsky , Nambirajan Seshadri , Kelly Cameron , Hau Tran , Ba-Zhong Shen
IPC分类号： H03C7/02 , H04B1/02 , H04B1/66 , H04B7/02 , H04L1/00 , H04L1/06 , H04L25/03
CPC分类号： H04W4/18 , H04L1/0057 , H04L1/0059 , H04L1/0065 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/0618 , H04L25/03866 , H04L27/2601 , H04W84/12 , H04W88/10
摘要： A wireless local area network (WLAN) transmitter includes a baseband processing module and a plurality of radio frequency (RF) transmitters. The baseband processing module is operably coupled to process data by scrambling the data in accordance with a pseudo random sequence to produce scrambled data. The processing of the data continues by selecting one of a plurality of encoding modes based on a mode selection signal. The processing of the data continues by encoding the scrambled data in accordance with the one of the plurality of encoding modes to produce encoded data. The processing of the data continues by determining a number of transmit streams based on the mode selection signal. The processing of the data further continues by converting the encoded data into streams of symbols in accordance with the number of transmit streams and the mode selection signal. A number of the plurality of RF transmitters are enabled based on the mode selection signal to convert a corresponding one of the streams of symbols into a corresponding RF signal such that a corresponding number of RF signals is produced.
摘要翻译：无线局域网（WLAN）发射机包括基带处理模块和多个射频（RF）发射机。基带处理模块可操作地耦合以通过根据伪随机序列对数据进行加扰来处理数据以产生加扰数据。基于模式选择信号，选择多种编码模式之一来继续数据的处理。通过根据多个编码模式之一对加扰数据进行编码，继续处理数据以产生编码数据。通过基于模式选择信号确定多个发送流来继续处理数据。根据发送流的数量和模式选择信号，将编码数据转换成符号流，继续处理数据。基于模式选择信号启用多个RF发射机的数量，以将符号流中的相应一个码流转换为对应的RF信号，从而产生相应数量的RF信号。

4. 发明申请

US20060156169A1 LDPC (Low Density Parity Check) coding and interleaving implemented in MIMO communication systems 有权
标题翻译：在MIMO通信系统中实现的LDPC（低密度奇偶校验）编码和交织
公开(公告)号：US20060156169A1
公开(公告)日：2006-07-13
申请号：US11264998
申请日：2005-11-02
申请人： Ba-Zhong Shen , Christopher Hansen , Joseph Lauer , Kelly Cameron , Tak Lee , Hau Tran
发明人： Ba-Zhong Shen , Christopher Hansen , Joseph Lauer , Kelly Cameron , Tak Lee , Hau Tran
IPC分类号： H03M13/00
CPC分类号： H04L27/2626 , H03M13/1148 , H03M13/116 , H03M13/255 , H03M13/6362 , H04B7/0617 , H04L1/0057 , H04L1/0071 , H04L5/0023 , H04L27/2647 , H04L27/34
摘要： LDPC (Low Density Parity Check) coding and interleaving implemented in multiple-input-multiple-output (MIMO) communication systems. Initially, a novel approach is presented by which a wide variety of irregular LDPC codes may be generated using GRS or RS codes. These irregular LDPC codes can provide better overall performance than regular LDPC codes in terms of providing for lower BER (Bit Error Rate) as a function of SNR (Signal to Noise Ratio). A variety of communication device types are also presented that may employ the error correcting coding using a GRS-based irregular LDPC code, along with appropriately selected interleaving, to provide for even better performance. These communication devices may be implemented to in wireless communication systems including those that comply with the recommendation practices and standards being developed by the IEEE 802.11n Task Group (i.e., the Task Group that is working to develop a standard for 802.11 TGn (High Throughput)).
摘要翻译：在多输入多输出（MIMO）通信系统中实现的LDPC（低密度奇偶校验）编码和交织。最初，提出了一种新颖的方法，通过该方法可以使用GRS或RS代码生成各种不规则的LDPC码。在提供作为SNR（信噪比）的函数的较低BER（误码率）方面，这些不规则LDPC码可以提供比常规LDPC码更好的总体性能。还提出了各种通信设备类型，其可以采用基于GRS的不规则LDPC码的纠错编码以及适当选择的交织，以提供更好的性能。这些通信设备可以被实现在无线通信系统中，包括符合由IEEE 802.11n任务组（即，正在努力制定802.11Gn（高吞吐量）的标准的任务组）开发的推荐做法和标准的通信系统，）。

5. 发明申请

US20060156206A1 Algebraic construction of LDPC (Low Density Parity Check) codes with corresponding parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices 有权
公开(公告)号：US20060156206A1
公开(公告)日：2006-07-13
申请号：US11292135
申请日：2005-12-01
申请人： Ba-Zhong Shen , Joseph Lauer , Christopher Hansen , Kelly Cameron
发明人： Ba-Zhong Shen , Joseph Lauer , Christopher Hansen , Kelly Cameron
IPC分类号： H03M13/00
CPC分类号： H03M13/6362 , H03M13/1148 , H03M13/1151 , H03M13/116 , H03M13/1174 , H03M13/1177 , H03M13/1185 , H03M13/1188 , H03M13/1515 , H03M13/255
摘要： Algebraic method to construct LDPC (Low Density Parity Check) codes with parity check matrix having CSI (Cyclic Shifted Identity) sub-matrices. A novel approach is presented by which identity sub-matrices undergo cyclic shifting, thereby generating CSI sub-matrices that are arranged forming a parity check matrix of an LDPC code. The parity check matrix of the LDPC code may correspond to a regular LDPC code, or the parity check matrix of the LDPC code may undergo further modification to transform it to that of an irregular LDPC code. The parity check matrix of the LDPC code may be partitioned into 2 sub-matrices such that one of these 2 sub-matrices is transformed to be a block dual diagonal matrix; the other of these 2 sub-matrices may be modified using a variety of means, including the density evolution approach, to ensure the desired bit and check degrees of the irregular LDPC code.

6. 发明申请

US20050185730A1 Asymmetrical multiple stream wireless communication using STBC 有权
标题翻译：使用STBC的不对称多流无线通信
公开(公告)号：US20050185730A1
公开(公告)日：2005-08-25
申请号：US11057842
申请日：2005-02-15
申请人： Christopher Hansen , Joonsuk Kim , Rajendra Moorti , Nambirajan Seshadri , Jason Trachewsky
发明人： Christopher Hansen , Joonsuk Kim , Rajendra Moorti , Nambirajan Seshadri , Jason Trachewsky
IPC分类号： H04L1/02
CPC分类号： H04L1/0066 , H04L1/0643 , H04L1/065 , H04L1/1671
摘要： A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers and unequal, has the steps of sending a message to determine a number of transmit paths to be used, awaiting an acknowledgement message comprising a number of receiver paths, setting the number of transmit paths based on at least the acknowledgement message, producing data streams from outbound data based on the number of transmit paths, applying the data streams to a space/time encoder to produce encoded signals and transmitting the encoded signals from at least a portion of N transmitting antennas.
摘要翻译：从N个发送天线向M个接收天线发送数据的方法，其中M和N是整数和不等的，具有发送消息以确定要使用的发送路径的数量的步骤，等待包括多个接收机的确认消息至少基于确认消息设置发送路径的数量，基于发送路径的数量从出站数据生成数据流，将数据流应用到空间/时间编码器以产生编码信号并从 N个发射天线的至少一部分。

7. 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。

8. 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。

9. 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。

10. 发明申请

US20050190724A1 Transmission of wide bandwidth signals in a network having legacy devices 有权
标题翻译：在具有传统设备的网络中传输宽带宽信号
公开(公告)号：US20050190724A1
公开(公告)日：2005-09-01
申请号：US10973612
申请日：2004-10-26
申请人： Christopher Hansen , Jason Trachewsky , R. Moorti
发明人： Christopher Hansen , Jason Trachewsky , R. Moorti
IPC分类号： H04L12/28 , H04L12/56 , H04W16/14 , H04W24/00 , H04W84/12 , H04W88/06 , H04Q7/00
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 transmitting wide bandwidth signals in a network that includes legacy devices begins by determining channel bandwidth of a channel that supports the wide bandwidth signals in the network. The method continues by determining overlap of legacy channel bandwidth with the channel bandwidth of the channel. The method continues by providing a legacy readable preamble section within the channel where the legacy channel bandwidth overlaps the channel bandwidth of the channel.
摘要翻译：在包括传统设备的网络中发送宽带宽信号的方法是通过确定支持网络中的宽带宽信号的信道的信道带宽来开始的。该方法通过确定传统信道带宽与信道的信道带宽的重叠来继续。该方法继续通过在传播信道带宽与信道的信道带宽重叠的信道内提供传统可读前置码部分。

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