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1. 发明授权

US07653120B2 Channel-adaptive waveform modulation 有权
标题翻译：通道自适应波形调制
公开(公告)号：US07653120B2
公开(公告)日：2010-01-26
申请号：US11347589
申请日：2006-02-04
申请人： Aiyou Chen , Thomas Louis Marzetta , Jack Salz
发明人： Aiyou Chen , Thomas Louis Marzetta , Jack Salz
IPC分类号： H04B1/00
CPC分类号： H04L25/03343 , H04L25/0248 , H04L2025/03414 , H04L2025/03808
摘要： A method for transmitting a sequence of data blocks of equal length includes obtaining part of a matrix for the impulse response function of a communication channel between a transmitter and a receiver. The part relating to channel-induced interference between sampling intervals of adjacent ones of the data blocks. The method includes designing a set of one or more linearly independent waveforms based on the obtained part of the matrix for the impulse response function and transmitting a sequence of the data blocks over the channel from the transmitter to the receiver. Each data block of the sequence is a weighted linear superposition of the one or more waveforms of the designed set.
摘要翻译：用于发送相等长度的数据块序列的方法包括获得用于发射机和接收机之间的通信信道的脉冲响应功能的矩阵的一部分。与相邻数据块的采样间隔之间的信道干扰相关的部分。该方法包括基于获得的用于脉冲响应函数的矩阵的一部分来设计一组一个或多个线性独立的波形，并且通过信道从发射机向接收机发送数据块的序列。序列的每个数据块是设计集合的一个或多个波形的加权线性叠加。

2. 发明申请

US20070183480A1 Channel-adaptive waveform modulation 有权
标题翻译：通道自适应波形调制
公开(公告)号：US20070183480A1
公开(公告)日：2007-08-09
申请号：US11347589
申请日：2006-02-04
申请人： Aiyou Chen , Thomas Marzetta , Jack Salz
发明人： Aiyou Chen , Thomas Marzetta , Jack Salz
IPC分类号： H04B1/00
CPC分类号： H04L25/03343 , H04L25/0248 , H04L2025/03414 , H04L2025/03808
摘要： A method for transmitting a sequence of data blocks of equal length includes obtaining part of a matrix for the impulse response function of a communication channel between a transmitter and a receiver. The part relating to channel-induced interference between sampling intervals of adjacent ones of the data blocks. The method includes designing a set of one or more linearly independent waveforms based on the obtained part of the matrix for the impulse response function and transmitting a sequence of the data blocks over the channel from the transmitter to the receiver. Each data block of the sequence is a weighted linear superposition of the one or more waveforms of the designed set.
摘要翻译：用于发送相等长度的数据块序列的方法包括获得用于发射机和接收机之间的通信信道的脉冲响应功能的矩阵的一部分。与相邻数据块的采样间隔之间的信道干扰相关的部分。该方法包括基于获得的用于脉冲响应函数的矩阵的一部分来设计一组一个或多个线性独立的波形，并且通过信道从发射机向接收机发送数据块的序列。序列的每个数据块是设计集合的一个或多个波形的加权线性叠加。

3. 发明授权

US5748681A Offset correction for a homodyne radio 失效
标题翻译：零差收音机的偏移校正
公开(公告)号：US5748681A
公开(公告)日：1998-05-05
申请号：US549363
申请日：1995-10-27
申请人： Vittorio Comino , Gerard Joseph Foschini , Isam M. Habbab , Sanjay Kasturia , Jack Salz , Michael Edward Prise , Ravi Subramanian
发明人： Vittorio Comino , Gerard Joseph Foschini , Isam M. Habbab , Sanjay Kasturia , Jack Salz , Michael Edward Prise , Ravi Subramanian
IPC分类号： H04L7/027 , H04L7/04 , H04L7/10 , H04L25/06
CPC分类号： H04L25/061 , H04L7/046 , H04L7/027 , H04L7/041 , H04L7/10
摘要： DC offset cancellation and timing recovery is provided in a homodyne receiver. The homodyne receiver demodulates an RF signal to produce a baseband signal. An initial offset correction module determines an initial DC offset of the baseband signal. An initial offset correction is applied to the baseband signal to provide an initial corrected baseband signal. Wherein, a dynamic DC offset correction module determines a dynamic DC offset. A dynamic DC offset correction is applied to the initial corrected baseband signal providing a dynamic corrected baseband signal. A timing signal is acquired from the baseband signal for synchronizing the receiver to a transmitter. A method for correcting DC offset of a baseband signal in a homodyne receiver is also described.
摘要翻译：在零差接收机中提供DC偏移消除和定时恢复。零差接收机解调RF信号以产生基带信号。初始偏移校正模块确定基带信号的初始DC偏移。对基带信号施加初始偏移校正以提供初始校正的基带信号。其中，动态DC偏移校正模块确定动态DC偏移。将动态DC偏移校正应用于提供动态校正基带信号的初始校正基带信号。从用于使接收机同步到发射机的基带信号获取定时信号。还描述了用于校正零差接收机中的基带信号的DC偏移的方法。

4. 发明授权

US4594479A Fast start-up of adaptive echo canceler or echo measurement device 失效
标题翻译：快速启动自适应回波消除器或回波测量装置
公开(公告)号：US4594479A
公开(公告)日：1986-06-10
申请号：US524421
申请日：1983-08-18
申请人： Cecil W. Farrow , Jack Salz
发明人： Cecil W. Farrow , Jack Salz
IPC分类号： H04B3/23 , H04B3/20
CPC分类号： H04B3/238
摘要： A method and apparatus for rapid initialization of the transversal filter efficients in an echo canceler or echo measurement device is described. During initialization, a first data sequence is applied to a transmission channel, and an error signal representing the difference between the resulting echo and a replica thereof generated by the transversal filter is formed. The coefficients used to form the replica (in the case of an echo canceler) or to model the transmission channel (in the case of an echo measurement device) are then updated as a function of the error and a second data sequence which is orthogonal to the first sequence.
摘要翻译：描述了用于在回波消除器或回波测量装置中快速初始化横向滤波器系数的方法和装置。在初始化期间，将第一数据序列应用于传输信道，并且形成表示由横向滤波器产生的所得到的回波与其副本之间的差异的误差信号。用于形成副本的系数（在回波消除器的情况下）或对传输信道建模（在回波测量装置的情况下）然后作为误差的函数被更新，并且与第二数据序列正交第一个序列。

5. 发明授权

US07200631B2 Method and apparatus for determining an inverse square root of a given positive-definite hermitian matrix 有权
标题翻译：用于确定给定正定密度矩阵的反平方根的方法和装置
公开(公告)号：US07200631B2
公开(公告)日：2007-04-03
申请号：US10340575
申请日：2003-01-10
申请人： Laurence Eugene Mailaender , Jack Salz , Sivarama Krishnan Venkatesan
发明人： Laurence Eugene Mailaender , Jack Salz , Sivarama Krishnan Venkatesan
IPC分类号： G06F7/32 , G06F7/38
CPC分类号： G06F17/16 , H04L25/03299
摘要： Generally, a method and apparatus are provided for computing a matrix inverse square root of a given positive-definite Hermitian matrix, K. The disclosed technique for computing an inverse square root of a matrix may be implemented, for example, by the noise whitener of a MIMO receiver. Conventional noise whitening algorithms whiten a non-white vector, X, by applying a matrix, Q, to X, such that the resulting vector, Y, equal to Q·X, is a white vector. Thus, the noise whitening algorithms attempt to identify a matrix, Q, that when multiplied by the non-white vector, will convert the vector to a white vector. The disclosed iterative algorithm determines the matrix, Q, given the covariance matrix, K. The disclosed matrix inverse square root determination process initially establishes an initial matrix, Q0, by multiplying an identity matrix by a scalar value and then continues to iterate and compute another value of the matrix, Qn+1, until a convergence threshold is satisfied. The disclosed iterative algorithm only requires multiplication and addition operations and allows incremental updates when the covariance matrix, K, changes.
摘要翻译：通常，提供了一种用于计算给定正定Hermitian矩阵K的矩阵逆平方根的方法和装置。用于计算矩阵的逆平方根的所公开的技术可以例如由 MIMO接收机。常规的噪声增白算法通过向X施加矩阵Q来使非白矢量X变白，从而得到的等于Q.X的矢量Y为白色矢量。因此，噪声美白算法尝试识别矩阵Q，当乘以非白色矢量时，将将矢量转换为白色矢量。所公开的迭代算法在给定协方差矩阵K的情况下确定矩阵Q.所公开的矩阵逆平方根确定过程通过将单位矩阵乘以标量值来初始建立起始矩阵Q 0> 0 < 然后继续迭代并计算矩阵Q N + 1 + 1的另一个值，直到满足收敛阈值。所公开的迭代算法仅需要乘法和加法运算，并且当协方差矩阵K改变时允许增量更新。

6. 发明授权

US4644562A Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems 失效
标题翻译：用于地面数字无线电系统的组合交叉极化干扰消除和码间干扰均衡
公开(公告)号：US4644562A
公开(公告)日：1987-02-17
申请号：US770174
申请日：1985-08-28
申请人： Mohsen Kavehrad , Jack Salz
发明人： Mohsen Kavehrad , Jack Salz
IPC分类号： H04J11/00 , H04B3/06 , H04B7/00 , H04L25/03 , H04B1/12
CPC分类号： H04B7/002 , H04L25/03038 , H04L25/03057
摘要： Data-aided equalization and cancellation in digital data transmission over dually polarized fading radio channels is disclosed. The present invention uses decision feedback structures with finite-tap transversal filters. Subject to the assumption that some past and/or future data symbols are correctly detected, formulas and algorithms for evaluating the least mean-square error for different structures are disclosed. In a sequence of curves, the performance of various structures for a particular propagation model and several fading events are evaluated and compared.
摘要翻译：公开了通过双极化衰落无线电信道进行的数字数据传输中的数据辅助均衡和消除。本发明使用有限抽头横向滤波器的判决反馈结构。假定正确检测到一些过去和/或未来数据符号，则公开了用于评估不同结构的最小均方误差的公式和算法。在一系列曲线中，对特定传播模型和几个衰落事件的各种结构的性能进行了评估和比较。

7. 发明授权

US4170764A Amplitude and frequency modulation system 失效
标题翻译：幅度和调频系统
公开(公告)号：US4170764A
公开(公告)日：1979-10-09
申请号：US883656
申请日：1978-03-06
申请人： Jack Salz , Jean J. Werner
发明人： Jack Salz , Jean J. Werner
IPC分类号： H04L27/10 , H03C5/00 , H04B1/66 , H04L27/12 , H04L27/32
CPC分类号： H04L27/122 , H04L27/32
摘要： Combined amplitude and frequency-shift-keying (AM-FSK) modulation of a carrier wave by a baseband data signal achieves significant suppression of one of the sidebands to ease the design requirements of filters generally used in the transmission of FSK signals. The significant suppression effect is observed when the ratio of minimum to maximum amplitude of the envelope of the amplitude modulated carrier wave is restrained to be approximately between 0.6 and 0.9.In one embodiment amplitude modulation is performed by a pair of amplifiers, each having a predetermined gain. In another embodiment, an all digital technique is used to synthesize the AM-FSK signal.
摘要翻译：基带数据信号的载波的PG，1组合幅度和频移键控（AM-FSK）调制实现了对边带之一的显着抑制，以便于FSK信号传输中通常使用的滤波器的设计要求。当幅度调制载波的包络的最小值与最大幅度的比率被约束为约0.6到0.9时，观察到显着的抑制效应。

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