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1. 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。

2. 发明授权

US07535972B2 Programmable transmitter 失效
标题翻译：可编程变送器
公开(公告)号：US07535972B2
公开(公告)日：2009-05-19
申请号：US11166808
申请日：2005-06-24
申请人： Joachim S. Hammerschmidt , Bruce E. Edwards , Venkat Kodavati , R. Tushar Moorti , Ling Su , Jason A. Trachewsky , Andrew Wagner
发明人： Joachim S. Hammerschmidt , Bruce E. Edwards , Venkat Kodavati , R. 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。

3. 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。

4. 发明授权

US08369388B2 Single-chip wireless tranceiver 有权
标题翻译：单芯片无线收发器
公开(公告)号：US08369388B2
公开(公告)日：2013-02-05
申请号：US12004406
申请日：2007-12-21
申请人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
发明人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
IPC分类号： H04B1/44
CPC分类号： H04B7/0413 , H01L2924/0002 , H01L2924/00
摘要： Embodiments of a wireless transceiver are provided. Embodiments can be used in multiple-input-multiple-output (MIMO) wireless transceivers. In an embodiment, radio control signal bundles are provided as direct parallel interconnects between digital signal processing modules and the radio module of the wireless transceiver to enable a precise low-latency control of radio functions. In another embodiment, a separate physical line is provided to control each radio setting of the radio module, thereby enabling simultaneous real-time control of any number of radio settings. In a further embodiment, the various digital and analog components of the wireless transceiver are integrated within a single chip of the same process technology.
摘要翻译：提供了无线收发器的实施例。实施例可以用于多输入多输出（MIMO）无线收发器。在一个实施例中，无线电控制信号束被提供为数字信号处理模块和无线收发器的无线电模块之间的直接并行互连，以实现无线电功能的精确的低延迟控制。在另一个实施例中，提供单独的物理线路以控制无线电模块的每个无线电设置，从而实现对任意数量的无线电设置的同时实时控制。在另一个实施例中，无线收发器的各种数字和模拟组件被集成在相同处理技术的单个芯片内。

5. 发明申请

US20080310487A1 Single-chip wireless tranceiver 有权
标题翻译：单芯片无线收发器
公开(公告)号：US20080310487A1
公开(公告)日：2008-12-18
申请号：US12004406
申请日：2007-12-21
申请人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
发明人： Joachim S. Hammerschmidt , Arya Reza Behzad , Keith Andrews Carter , Simeon Furrer , Rohit Vijay Gaikwad , Jason Alexander Trachewsky , Amit Bagchi , Rajendra Tushar Moorti , Venkateswara Rao Kodavati
IPC分类号： H04B1/44
CPC分类号： H04B7/0413 , H01L2924/0002 , H01L2924/00
摘要： Embodiments of a wireless transceiver are provided. Embodiments can be used in multiple-input-multiple-output (MIMO) wireless transceivers. In an embodiment, radio control signal bundles are provided as direct parallel interconnects between digital signal processing modules and the radio module of the wireless transceiver to enable a precise low-latency control of radio functions. In another embodiment, a separate physical line is provided to control each radio setting of the radio module, thereby enabling simultaneous real-time control of any number of radio settings. In a further embodiment, the various digital and analog components of the wireless transceiver are integrated within a single chip of the same process technology.
摘要翻译：提供了无线收发器的实施例。实施例可以用于多输入多输出（MIMO）无线收发器。在一个实施例中，无线电控制信号束被提供为数字信号处理模块和无线收发器的无线电模块之间的直接并行互连，以实现无线电功能的精确的低延迟控制。在另一个实施例中，提供单独的物理线路以控制无线电模块的每个无线电设置，从而实现对任意数量的无线电设置的同时实时控制。在另一个实施例中，无线收发器的各种数字和模拟组件被集成在相同处理技术的单个芯片内。

6. 发明授权

US08194771B2 Transmission method and apparatus in a multiple antenna communication system 有权
标题翻译：多天线通信系统中的传输方法和装置
公开(公告)号：US08194771B2
公开(公告)日：2012-06-05
申请号：US10990143
申请日：2004-11-16
申请人： Joachim S. Hammerschmidt , Robert John Kopmeiners , Xiaowen Wang
发明人： Joachim S. Hammerschmidt , Robert John Kopmeiners , Xiaowen Wang
IPC分类号： H04B7/02
CPC分类号： H04L1/06 , H04B7/0671
摘要： A method and apparatus are disclosed for transmitting symbols in a multiple antenna communication system. The disclosed frame structure comprises a preamble having a plurality of long training symbols that are transmitted on a plurality transmit antennas. At least a portion of the frame is delayed on at least one transmit antenna. The disclosed frame formats of the present invention are backwards compatible to existing single antenna communication systems. The delay amount, D, can be approximately equal to one OFDM time sample period, T. The delayed version can be obtained by introducing a time delay into a signal on the delayed branch(es) or by cyclically shifting at least a portion of each frame on the delayed branch(es). The entire frame or only the preamble portion of each frame can be delayed.
摘要翻译：公开了用于在多天线通信系统中发送符号的方法和装置。所公开的帧结构包括具有在多个发射天线上发射的多个长训练符号的前同步码。帧的至少一部分在至少一个发射天线上被延迟。所公开的本发明的帧格式向后兼容于现有的单一天线通信系统。延迟量D可以近似等于一个OFDM时间采样周期T.延迟版本可以通过在延迟分支上的信号中引入时间延迟或者通过周期性地移位每个在延迟分支上的框架。每个帧的整个帧或仅前导码部分可以被延迟。

7. 发明申请

US20090304124A1 REDUCED-COMPLEXITY MULTIPLE-INPUT, MULTIPLE-OUTPUT DETECTION 有权
标题翻译：降低复杂度多输入，多输出检测
公开(公告)号：US20090304124A1
公开(公告)日：2009-12-10
申请号：US12508697
申请日：2009-07-24
申请人： Nils Graef , Joachim S. Hammerschmidt
发明人： Nils Graef , Joachim S. Hammerschmidt
IPC分类号： H04L27/06
CPC分类号： H04L25/03191 , H04B7/0413 , H04L5/0023 , H04L25/0204 , H04L25/0224 , H04L25/0321 , H04L25/03318 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03643
摘要： A wireless receiver detects signals generated with a multiple-input, multiple-output (MIMO) transmitter. The receiver applies maximum-likelihood detection (MLD) for soft-output signal detection, where an MLD exhaustive search across all candidate vectors is performed recursively by computing and accumulating the differences between, for example, the Euclidean metrics of consecutive candidate tests. Difference terms used for the accumulation are also calculated recursively. An ordering of candidates, such as by a triangular-waveform shaped ordering, is employed such that only one candidate variable is changed between any two consecutive candidate evaluations, leading to a reduced set of computations.
摘要翻译：无线接收机检测由多输入多输出（MIMO）发射机产生的信号。接收机对软输出信号检测应用最大似然检测（MLD），其中通过计算和累积例如连续候选测试的欧几里德度量之间的差异来递归地执行跨所有候选向量的MLD详尽搜索。用于积累的差异项也递归计算。采用诸如通过三角形波形排序的候选者的排序，使得在任何两个连续的候选评估之间仅改变一个候选变量，导致减少的计算集合。

8. 发明授权

US07583762B2 Reduced-complexity multiple-input, multiple-output detection 失效
标题翻译：降低复杂度的多输入多输出检测
公开(公告)号：US07583762B2
公开(公告)日：2009-09-01
申请号：US10990910
申请日：2004-11-17
申请人： Nils Graef , Joachim S. Hammerschmidt
发明人： Nils Graef , Joachim S. Hammerschmidt
IPC分类号： H03D1/00
CPC分类号： H04L25/03191 , H04B7/0413 , H04L5/0023 , H04L25/0204 , H04L25/0224 , H04L25/0321 , H04L25/03318 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03643
摘要： A wireless receiver detects signals generated with a multiple-input, multiple-output (MIMO) transmitter. The receiver applies maximum-likelihood detection (MLD) for soft-output signal detection, where an MLD exhaustive search across all candidate vectors is performed recursively by computing and accumulating the differences between, for example, the Euclidean metrics of consecutive candidate tests. Difference terms used for the accumulation are also calculated recursively. An ordering of candidates, such as by a triangular-waveform shaped ordering, is employed such that only one candidate variable is changed between any two consecutive candidate evaluations, leading to a reduced set of computations.
摘要翻译：无线接收机检测由多输入多输出（MIMO）发射机产生的信号。接收机对软输出信号检测应用最大似然检测（MLD），其中通过计算和累积例如连续候选测试的欧几里德度量之间的差异来递归地执行跨所有候选向量的MLD详尽搜索。用于积累的差异项也递归计算。采用诸如通过三角形波形排序的候选者的排序，使得在任何两个连续的候选评估之间仅改变一个候选变量，导致减少的计算集合。

9. 发明授权

US07356322B2 Multiple-branch wireless receiver 有权
标题翻译：多分支无线接收器
公开(公告)号：US07356322B2
公开(公告)日：2008-04-08
申请号：US10847431
申请日：2004-05-17
申请人： Joachim S. Hammerschmidt , Danilo Manstretta
发明人： Joachim S. Hammerschmidt , Danilo Manstretta
IPC分类号： H04B7/08
CPC分类号： H04B7/08 , H03G3/3078 , H04B7/0619
摘要： A wireless receiver detects signals received at two or more antennas, with each antenna coupled to an input receive chain. A switch is employed to couple selected input receive chains to one or more corresponding output receive chains during listening, coarse-detection, and fine-adjustment modes. At least one channel selection filter (CSF) is employed in each output receive chain, and the receiver employs sub-ranging. During idle mode, one antenna's input receive chain is connected to two or more CSFs to detect the packet. When the packet is detected, during a coarse-adjustment mode, the CSFs are reconfigured to couple each antenna's input receive chain to a corresponding output receive chain using low-gain signals. During fine-adjustment mode, the various gains are adjusted to be either high- or low-gain to maintain signals within the dynamic range of the corresponding CSFs.
摘要翻译：无线接收机检测在两个或多个天线处接收到的信号，其中每个天线耦合到输入接收链。在收听，粗略检测和微调模式期间，使用开关将选定的输入接收链耦合到一个或多个相应的输出接收链。在每个输出接收链中使用至少一个信道选择滤波器（CSF），并且接收机采用子范围。在空闲模式期间，一个天线的输入接收链被连接到两个或更多个CSF以检测该分组。当检测到分组时，在粗调模式期间，重新配置CSF，以使用低增益信号将每个天线的输入接收链耦合到相应的输出接收链。在微调模式期间，将各种增益调整为高或低增益，以将信号保持在相应CSF的动态范围内。

10. 发明申请

US20120309321A1 Synchronized calibration for wireless communication devices 审中-公开
标题翻译：无线通信设备的同步校准
公开(公告)号：US20120309321A1
公开(公告)日：2012-12-06
申请号：US13180843
申请日：2011-07-12
申请人： Peyush Agarwal , Joachim S. Hammerschmidt , Yasantha N. Rajakarunanayake
发明人： Peyush Agarwal , Joachim S. Hammerschmidt , Yasantha N. Rajakarunanayake
IPC分类号： H04B17/00
CPC分类号： H04W72/1242 , H04W72/0446 , H04W72/0486 , H04W72/12 , H04W72/1252 , H04W72/1268 , H04W72/1278 , Y02D70/1224 , Y02D70/1242 , Y02D70/1244 , Y02D70/1246 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/162 , Y02D70/164
摘要： Synchronized calibration for wireless communication devices. A protocol is presented herein that allows for calibration operation(s) by one or more wireless communication devices to mitigate (or eliminate) the disruption caused to the communication medium thereby. A calibration announcement frame is provided by a wireless communication device intending to perform calibration operation(s), and respective receiving wireless communication devices may adaptively determine whether to perform a calibration operation based thereon. In response to a calibration announcement frame, one or more other wireless communication devices may also perform calibration operation(s) (e.g., in accordance with a group calibration event, simultaneously, etc.) or may perform some operations as to minimize any effects that may be incurred during such a calibration operation(s) (e.g., enter into some robust operational mode, power savings mode, etc.). Such a calibration announcement frame may indicate respective time slots (e.g., maintenance window) during which respective wireless communication devices may perform calibration operation(s).
摘要翻译：无线通信设备的同步校准。这里呈现允许一个或多个无线通信设备进行校准操作以减轻（或消除）由此导致的对通信介质的中断的协议。校准通知帧由旨在执行校准操作的无线通信设备提供，并且各个接收无线通信设备可以基于此自适应地确定是否执行校准操作。响应于校准公告帧，一个或多个其他无线通信设备还可以执行校准操作（例如，根据组校准事件，同时等等），或者可以执行一些操作，以使得可能在这样的校准操作期间发生（例如，进入一些鲁棒的操作模式，省电模式等）。这样的校准公告帧可以指示相应的无线通信设备可执行校准操作的各个时隙（例如，维护窗口）。

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