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11. 发明申请

US20050159735A1 Refrigeration source for a cryoablation catheter 审中-公开
标题翻译：冷冻消融导管的制冷源
公开(公告)号：US20050159735A1
公开(公告)日：2005-07-21
申请号：US10888804
申请日：2004-07-09
申请人： Jay Walton , Lizhong Zheng , John Ketchum , Mark Wallace , Steven Howard
发明人： Jay Walton , Lizhong Zheng , John Ketchum , Mark Wallace , Steven Howard
IPC分类号： A61B17/00 , A61B18/02 , A61F7/00 , A61F7/10 , A61F7/12 , A61M25/00 , F25B9/02
CPC分类号： F25D3/10 , A61B18/02 , A61B2017/00199 , A61B2018/0212 , A61B2018/0262 , A61B2018/0268 , F25B9/02 , F25B2700/13 , F25D16/00 , F25D2400/36
摘要： An apparatus and method for automatic operation of a refrigeration system to provide refrigeration power to a catheter for tissue ablation or mapping. The primary refrigeration system can be open loop or closed loop, and a precool loop will typically be closed loop. Equipment and procedures are disclosed for bringing the system to the desired operational state, for controlling the operation by controlling refrigerant flow rate, for performing safety checks, and for achieving safe shutdown. The catheter-based system for performing a cryoablation procedure uses a precooler to lower the temperature of a fluid refrigerant to a sub-cool temperature (−40° C.) at a working pressure (400 psi). The sub-cooled fluid is then introduced into a supply line of the catheter. Upon outflow of the primary fluid from the supply line, and into a tip section of the catheter, the fluid refrigerant boils at an outflow pressure of approximately one atmosphere, at a temperature of about −88° C. In operation, the working pressure is computer controlled to obtain an appropriate outflow pressure for the coldest possible temperature in the tip section.
摘要翻译：一种用于自动操作制冷系统以向用于组织消融或映射的导管提供制冷功率的装置和方法。主要制冷系统可以是开环或闭环，并且预冷循环通常将是闭环的。公开了用于使系统达到所需操作状态的设备和程序，用于通过控制制冷剂流量来控制操作，用于执行安全检查和实现安全关闭。用于执行冷冻消融程序的基于导管的系统使用预冷器来在工作压力（400psi）下将流体制冷剂的温度降低至亚冷的温度（-40℃）。然后将次冷流体引入导管的供应管线。在主要流体从供应管路流出并进入导管的尖端部分时，流体制冷剂在大约一个大气压的流出压力下沸腾，温度约为-88℃。在操作中，工作压力为计算机控制以获得适当的流出压力，用于在尖端部分中最冷的温度。

12. 发明授权

US08806288B2 Systems and methods for providing unequal error protection code design from probabilistically fixed composition codes 有权
标题翻译：用于从概率固定的组成代码中提供不相等的错误保护代码设计的系统和方法
公开(公告)号：US08806288B2
公开(公告)日：2014-08-12
申请号：US12404264
申请日：2009-03-13
申请人： John Michael Kowalski , Sayantan Choudhury , Kimihiko Imamura , Lizhong Zheng , Ahmad Khoshnevis , Zhanping Yin
发明人： John Michael Kowalski , Sayantan Choudhury , Kimihiko Imamura , Lizhong Zheng , Ahmad Khoshnevis , Zhanping Yin
IPC分类号： H03M13/00
CPC分类号： H04L1/007 , H03M13/033 , H03M13/1102 , H03M13/136 , H03M13/15 , H03M13/1515 , H03M13/152 , H03M13/23 , H03M13/29 , H03M13/2903 , H03M13/2957 , H03M13/356 , H03M13/3746 , H03M13/6558 , H04L1/0073
摘要： A method of encoding that uses standard codecs such as linear encoders and decoders for encoding and decoding data with different levels of robustness to errors is described. In one configuration, multiple encoders may be utilized, and one of the encoders may use a standard encoder such as a turbo code followed by a nonlinearity that creates an unequal distribution of ones and zeros in a binary representation of the code. In another configuration, a coder may be utilized that represents message outputs as “channels” that create state transitions (or symbol errors) in a data forward error correction coder.
摘要翻译：描述了使用诸如线性编码器和解码器之类的标准编解码器的编码方法，用于对具有不同级别的鲁棒性到错误的数据进行编码和解码。在一种配置中，可以使用多个编码器，并且编码器中的一个可以使用标准编码器，例如turbo码，随后是非线性，其在代码的二进制表示中产生不等分的1和零。在另一种配置中，可以使用将消息输出表示为在数据前向纠错编码器中产生状态转换（或符号错误）的“通道”的编码器。

13. 发明授权

US08543867B2 Transmission of acknowledgement and negative acknowledgement in a wireless communication system 有权
标题翻译：在无线通信系统中传送确认和否定确认
公开(公告)号：US08543867B2
公开(公告)日：2013-09-24
申请号：US12753421
申请日：2010-04-02
申请人： Ahmad Khoshnevis , Lizhong Zheng , John M. Kowalski
发明人： Ahmad Khoshnevis , Lizhong Zheng , John M. Kowalski
IPC分类号： G06F11/00
CPC分类号： H04L1/0073 , H04L1/1614
摘要： A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received.
摘要翻译：描述了配置为传送确认和否定确认（ACK / NACK）的通信设备。通信设备包括处理器和存储在存储器中的指令。通信设备基于一个或多个码字的大小确定一个或多个阈值，并生成压缩的ACK / NACK序列。如果错误接收的代码字的数量小于阈值，则压缩的ACK / NACK序列识别一个或多个正确接收的码字和一个或多个错误接收的码字。如果错误接收的码字的数量大于阈值，则压缩的ACK / NACK序列指示所有一个或多个码字都被错误地接收。

14. 发明授权

US08204149B2 Spatial spreading in a multi-antenna communication system 有权
标题翻译：多天线通信系统中的空间扩展
公开(公告)号：US08204149B2
公开(公告)日：2012-06-19
申请号：US11008865
申请日：2004-12-09
申请人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04L27/26 , H04B7/06
CPC分类号： H04B7/0417 , H04B7/0456 , H04B7/0669 , H04B17/336 , H04L1/06
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.
摘要翻译：在多天线系统中执行空间扩展，以随机化接收实体针对每个发送的数据符号块观察到的“有效”信道。对于MIMO系统，在发送实体处理（例如，编码，交织和调制）数据，以获得将以NM≥1和NM> 1的NM传输跨度发送的ND数据符号块。 ND块被划分为NM数据符号子块，每个传输跨度的一个子块。对于每个子块，选择导向矩阵（例如，以确定性或伪随机方式从一组L个导引矩阵中，其中L> 1）。每个数据符号子块用为该子块选择的导引矩阵进行空间处理，以获得在一个传输范围内经由NT个发射天线进一步处理和传输的发射符号。因此，ND数据符号块用NM导引矩阵进行空间处理，并观察信道的集合。

15. 发明申请

US20120056764A1 System and Method for Preserving Neighborhoods in Codes 有权
标题翻译：在守则中保护邻域的系统和方法
公开(公告)号：US20120056764A1
公开(公告)日：2012-03-08
申请号：US12875895
申请日：2010-09-03
申请人： Lizhong Zheng , Yufei Blankenship
发明人： Lizhong Zheng , Yufei Blankenship
IPC分类号： H03M13/03
CPC分类号： H03M13/033 , H03M13/036 , H03M13/13 , H03M13/2903 , H03M13/2906 , H03M13/2927 , H03M13/3761 , H03M13/3776
摘要： A system and method for preserving neighborhoods in codes are provided. A method for transmitting information includes receiving an information string to transmit, generating a first address and a second address from the information string, encoding the first address and the second address with a layered code encoder, thereby producing a codeword and transmitting the codeword. The generating is based on a linear block code.
摘要翻译：提供了一种用于在代码中保留邻域的系统和方法。用于发送信息的方法包括：接收信息串以发送信息，从信息串生成第一地址和第二地址，用分层码编码器对第一地址和第二地址进行编码，从而产生码字并发送码字。该生成基于线性块代码。

16. 发明申请

US20110246840A1 TRANSMISSION OF ACKNOWLEDGEMENT AND NEGATIVE ACKNOWLEDGEMENT IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：传输无线通信系统中的确认和否定确认
公开(公告)号：US20110246840A1
公开(公告)日：2011-10-06
申请号：US12753421
申请日：2010-04-02
申请人： Ahmad Khoshnevis , Lizhong Zheng , John M. Kowalski
发明人： Ahmad Khoshnevis , Lizhong Zheng , John M. Kowalski
IPC分类号： H04L1/00 , G06F11/00 , G01R31/28
CPC分类号： H04L1/0073 , H04L1/1614
摘要： A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received.
摘要翻译：描述了配置为传送确认和否定确认（ACK / NACK）的通信设备。通信设备包括处理器和存储在存储器中的指令。通信设备基于一个或多个码字的大小确定一个或多个阈值，并生成压缩的ACK / NACK序列。如果错误接收的代码字的数量小于阈值，则压缩的ACK / NACK序列识别一个或多个正确接收的码字和一个或多个错误接收的码字。如果错误接收的码字的数量大于阈值，则压缩的ACK / NACK序列指示所有一个或多个码字都被错误地接收。

17. 发明申请

US20110080903A1 CODING A CONTROL MESSAGE WITH DETERMINED DATA CODE BLOCK REPETITION 有权
标题翻译：用确定的数据代码块重复编码控制消息
公开(公告)号：US20110080903A1
公开(公告)日：2011-04-07
申请号：US12572745
申请日：2009-10-02
申请人： Zhanping Yin , John M. Kowalski , Lizhong Zheng
发明人： Zhanping Yin , John M. Kowalski , Lizhong Zheng
IPC分类号： H04J3/00 , H04L12/56
CPC分类号： H04L1/08 , H04L1/0067 , H04L1/007 , H04L1/0086
摘要： A method for coding control data with user data repetition is disclosed. Bits in user data may be removed. Bits in control data may be repeated to increase a number of bits in the control data. A number of bits in the user data that is the same as the number of bits in the control data may be copied. The copied user data bits may be added to the control data. The user data and the control data may be multiplexed.
摘要翻译：公开了一种用户数据重复编码控制数据的方法。用户数据中的位可能会被删除。可以重复控制数据中的位以增加控制数据中的位数。可以复制与用户数据中与控制数据中的位数相同的位数。复制的用户数据位可以被添加到控制数据。用户数据和控制数据可以被多路复用。

18. 发明授权

US07843989B2 Systems and methods for embedding a first signal in the coding of a second signal 有权
标题翻译：用于在第二信号的编码中嵌入第一信号的系统和方法
公开(公告)号：US07843989B2
公开(公告)日：2010-11-30
申请号：US11768789
申请日：2007-06-26
申请人： Huaming Wu , Lizhong Zheng
发明人： Huaming Wu , Lizhong Zheng
IPC分类号： H04L27/30
CPC分类号： H04L1/0028 , H04L1/1671
摘要： A method for embedding a first signal in the coding of a second signal is described. A value of the first signal is determined. A codebook based on the value of the first signal is generated. A second signal is encoded using a codeword from the generated codebook. The encoded second signal is modulated into a plurality of symbols, wherein the symbols are distributed according to the value of the first signal. The modulated symbols are inserted into one or more time slots of a sequence.
摘要翻译：描述了在第二信号的编码中嵌入第一信号的方法。确定第一信号的值。产生基于第一信号的值的码本。使用来自生成的码本的码字来对第二信号进行编码。编码的第二信号被调制成多个符号，其中符号根据第一信号的值被分配。调制符号被插入到序列的一个或多个时隙中。

19. 发明授权

US07746766B2 Systems and methods for obtaining an optimum transmission format of reference signals to maximize capacity and minimize peak to average power ratio 有权
标题翻译：用于获得参考信号的最佳传输格式以最大化容量并最小化峰均功率比的系统和方法
公开(公告)号：US07746766B2
公开(公告)日：2010-06-29
申请号：US11534197
申请日：2006-09-21
申请人： John M. Kowalski , Huaming Wu , Lizhong Zheng
发明人： John M. Kowalski , Huaming Wu , Lizhong Zheng
IPC分类号： H04J11/00
CPC分类号： H04L27/261 , H04B7/02 , H04B7/0413 , H04L27/2602 , H04L27/2614 , H04L27/2615 , H04L27/2626 , H04L27/2647
摘要： A method for optimizing a transmission format of a reference signal is disclosed. A first matrix is provided. A second matrix is computed from the first matrix. A derivative of a function of the second matrix is defined. Iterates of the function are obtained. A function of the second matrix is determined. An optimum value of the first matrix is calculated.
摘要翻译：公开了一种用于优化参考信号的传输格式的方法。提供了第一个矩阵。从第一矩阵计算第二矩阵。定义第二矩阵的函数的导数。获得函数的迭代。确定第二矩阵的函数。计算第一矩阵的最优值。

20. 发明授权

US07664010B2 Systems and methods for combining reference and data signals to reduce peak to average power ratio for coherent communication systems 有权
标题翻译：用于组合参考和数据信号以减少相干通信系统的峰值与平均功率比的系统和方法
公开(公告)号：US07664010B2
公开(公告)日：2010-02-16
申请号：US11534180
申请日：2006-09-21
申请人： John M. Kowalski , Huaming Wu , Lizhong Zheng
发明人： John M. Kowalski , Huaming Wu , Lizhong Zheng
IPC分类号： H04J11/00
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0023 , H04L27/2614
摘要： A method for combining a reference signal with a data signal is disclosed. A multiplexed data signal is received. A demultiplexer is applied to the data signal. The data signal is encoded. A linear transformation is applied to the data signal which projects the data signal into a null-space of a plurality of reference signals. The encoded data signal is summed with the reference signal. The summation of the data signal and the reference signal is orthogonally modulated. The combined reference signal and data signal is transmitted to a receiver.
摘要翻译：公开了一种将参考信号与数据信号组合的方法。接收复用的数据信号。解复用器被应用于数据信号。数据信号被编码。对数据信号施加线性变换，数据信号将数据信号投影到多个参考信号的零空间中。编码数据信号与参考信号相加。对数据信号和参考信号的求和进行正交调制。组合的参考信号和数据信号被发送到接收机。

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