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1. 发明授权

US06456666B1 Signal encoding for transmission of multiple digital signals over single physical medium 有权
标题翻译：用于通过单个物理介质传输多个数字信号的信号编码
公开(公告)号：US06456666B1
公开(公告)日：2002-09-24
申请号：US09363524
申请日：1999-07-29
申请人： Thaddeus John Gabara , Syed Aon Mujtaba
发明人： Thaddeus John Gabara , Syed Aon Mujtaba
IPC分类号： H04L2700
CPC分类号： H04L25/4904 , H04L5/02 , H04L25/4906
摘要： Two or more digital signals are encoded using two or more respective line codes. The line codes are chosen in conjunction with the data rates of the digital signals such that the encoded signals are substantially orthogonal to each other in the frequency domain. As such, the two or more encoded signals may be combined and transmitted via a single physical medium with little or no interference. A transmitter for encoding and transmitting the digital signals contains line coders for encoding the digital signals and a combiner for combining the encoded signals for transmission via a single physical medium.
摘要翻译：使用两个或多个相应的行代码对两个或多个数字信号进行编码。结合数字信号的数据速率选择线路代码，使得编码信号在频域中基本上彼此正交。这样，两个或多个编码信号可以通过具有很少或没有干扰的单个物理介质进行组合和发送。用于编码和发送数字信号的发射机包含用于对数字信号进行编码的编码器和用于组合经编码的信号以进行经由单个物理介质传输的组合器。

2. 发明授权

US06950678B1 Control technique for a communication system 有权
标题翻译：一种通信系统的控制技术
公开(公告)号：US06950678B1
公开(公告)日：2005-09-27
申请号：US09576999
申请日：2000-05-24
申请人： Syed Aon Mujtaba , Thaddeus John Gabara
发明人： Syed Aon Mujtaba , Thaddeus John Gabara
IPC分类号： H01Q3/26 , H04B7/26 , H04W16/32 , H04W88/08 , H04Q7/20 , H01Q3/24 , H04B1/38
CPC分类号： H04W16/32
摘要： A control technique for a communication system in which a microcell base station is co-located with a macrocell base station. The microcell base station tracks hot spots as they move within the macrocell. The microcell base station may utilize a two-dimensional (2-D) antenna array, which is co-located with the macro cell antenna. The two-dimensional antenna is steerable in both the horizontal and vertical directions. The size of the microcell coverage area depends upon the distance from the cell site antenna as well as the dimensionality of the array, which determines the angular spread of the beam. Filter tap weights may be adjusted to point the beam to any desired location in the macrocell. The orthogonality between the macrocell and the microcell may be obtained either in the frequency domain or in the code domain, depending upon the system in which it is implemented.
摘要翻译：一种用于其中微小区基站与宏小区基站共同定位的通信系统的控制技术。微小区基站在宏小区内移动时跟踪热点。微小区基站可以利用与宏小区天线共同定位的二维（2-D）天线阵列。二维天线在水平和垂直两个方向都是可操纵的。微小区覆盖区域的大小取决于距离小区站点天线的距离以及阵列的维数，这决定了射束的角度扩展。可以调整滤波器抽头权重以将波束指向宏单元中的任何所需位置。宏单元和微小区之间的正交性可以在频域或代码域中获得，这取决于其实现的系统。

3. 发明授权

US06515533B1 Multi-input comparator 有权
标题翻译：多输入比较器
公开(公告)号：US06515533B1
公开(公告)日：2003-02-04
申请号：US09162852
申请日：1998-09-29
申请人： Thaddeus John Gabara , Syed Aon Mujtaba
发明人： Thaddeus John Gabara , Syed Aon Mujtaba
IPC分类号： H03K1762
CPC分类号： H03K5/24
摘要： A multi-input comparator in accordance with the invention determines a minimum or maximum signal value in a given set of signal values. An illustrative embodiment of the multi-input comparator includes N inputs and generates an output corresponding to the maximum or minimum value in a set of signal values applied to the N inputs. The comparator includes a first comparison circuit, such as a sense amplifier, having inputs for receiving a subset of the N signal values, such as a pair of the inputs. The comparator also includes a first multiplexer having a select signal input coupled to an output of the first comparison circuit, and inputs coupled to the subset of the N signal values. The comparator further includes N-2 additional comparison circuits and N-2 additional multiplexers, with the N-2 additional multiplexers coupled to corresponding ones of the N-2 additional comparison circuits. The comparison circuits and multiplexers are arranged to select a particular one of the N signal values, e.g., the maximum or the minimum value. The additional comparison circuits and multiplexers may be arranged in, for example, a linear architecture or a logarithmic architecture. The comparator may be used in conjunction with a position determination circuit which indicates the position of the maximum or minimum value in the set of signal values, or produces a desired ordering of the signal values.
摘要翻译：根据本发明的多输入比较器确定给定的一组信号值中的最小或最大信号值。多输入比较器的说明性实施例包括N个输入并且产生对应于施加到N个输入的一组信号值中的最大值或最小值的输出。比较器包括具有用于接收N个信号值的子集的输入的诸如读出放大器的第一比较电路，例如一对输入。比较器还包括具有耦合到第一比较电路的输出的选择信号输入以及耦合到N个信号值的子集的输入的第一多路复用器。比较器还包括N-2个附加比较电路和N-2个附加多路复用器，其中N-2个附加多路复用器耦合到N-2个附加比较电路中的相应的。比较电路和多路复用器被设置为选择N个信号值中的特定一个，例如最大值或最小值。附加的比较电路和多路复用器可以被布置在例如线性架构或对数架构中。比较器可以与指示信号值集合中的最大值或最小值的位置的位置确定电路一起使用，或产生信号值的期望顺序。

4. 发明授权

US06249192B1 Clock injection system 有权
标题翻译：时钟注入系统
公开(公告)号：US06249192B1
公开(公告)日：2001-06-19
申请号：US09311589
申请日：1999-05-14
申请人： Thaddeus John Gabara , Syed Aon Mujtaba
发明人： Thaddeus John Gabara , Syed Aon Mujtaba
IPC分类号： H03B512
CPC分类号： H03L7/0805 , H03B5/1212 , H03B5/1228 , H03B5/1271 , H03K3/354 , H03L7/06 , H03L7/24 , H04L7/027 , H04L7/033
摘要： A tuning signal is injected into an LC tank circuit oscillator, e.g., through an impedance (either reactive, inductive, capacitive and/or resistive) to tune the phase and/or frequency of the LC tank circuit oscillator. A negative resistance is included in parallel with the LC tank circuit oscillator to compensate for losses in the LC tank circuit, and a bias signal is provided to power the operation of the LC tank circuit. The tuning signal may be, e.g., an AC signal or a data signal. The tuning signal is injected into the LC tank circuit using capacitors, resistors, FET or bipolar transistors, and/or inductors. Multiple LC tank circuit oscillators may be used to provide stable multiplied or divided frequencies. In this case, the output of one LC tank circuit oscillator may be used to tune another LC tank circuit oscillator. In another embodiment, the nominal frequency of the LC tank circuit oscillator may be adjusted using a varactor or other voltage-controlled element in the LC tank circuit oscillator under the control of, e.g., the output of a separate PLL loop including another LC tank circuit oscillator. In one application, the injection tuned LC tank circuit forms a clock recovery cell using a clock signal embedded in a NRZ (Non Return to Zero) pseudo-random data stream. The slave oscillator in turn generates a recovered clock signal. Differential clock recovery can be performed with as little as four active devices.
摘要翻译：调谐信号例如通过阻抗（无功，电感，电容和/或电阻）被注入LC振荡电路振荡器，以调谐LC振荡电路振荡器的相位和/或频率。 LC电路振荡器并联包含负电阻，以补偿LC电路中的损耗，并提供偏置信号为LC电路的运行提供动力。调谐信号可以是例如AC信号或数据信号。使用电容器，电阻器，FET或双极晶体管和/或电感器将调谐信号注入LC谐振电路。多个LC振荡电路振荡器可用于提供稳定的倍频或分频。在这种情况下，一个LC振荡电路振荡器的输出可用于调谐另一个LC振荡电路振荡器。在另一个实施例中，LC振荡电路振荡器的标称频率可以在LC振荡电路振荡器中使用变容二极管或其他电压控制元件进行调节，例如在包括另一个LC振荡电路的单独的PLL回路的输出振荡器在一个应用中，注入调谐的LC槽电路使用嵌入在NRZ（非归零）伪随机数据流中的时钟信号形成时钟恢复单元。从振荡器又产生恢复的时钟信号。差分时钟恢复可以用少至四个有源器件来执行。

5. 发明授权

US06721376B2 Signal encoding for transmission of multiple digital signals over single physical medium 有权
标题翻译：用于通过单个物理介质传输多个数字信号的信号编码
公开(公告)号：US06721376B2
公开(公告)日：2004-04-13
申请号：US10213225
申请日：2002-08-06
申请人： Thaddeus John Gabara , Syed Aon Mujtaba
发明人： Thaddeus John Gabara , Syed Aon Mujtaba
IPC分类号： H09B110
CPC分类号： H04L25/4904 , H04L5/02 , H04L25/4906
摘要： Two or more digital signals are encoded using two or more respective line codes. The line codes are chosen in conjunction with the data rates of the digital signals such that the encoded signals are substantially orthogonal to each other in the frequency domain. As such, the two or more encoded signals may be combined and transmitted via a single physical medium with little or no interference. A transmitter for encoding and transmitting the digital signals contains line coders for encoding the digital signals and a combiner for combining the encoded signals for transmission via a single physical medium. A receiver for receiving and decoding the combined encoded signal contains filters for extracting the individual encoded signals and line decoders for decoding the individual encoded signals to generate the original digital data signals.
摘要翻译：使用两个或多个相应的行代码对两个或多个数字信号进行编码。结合数字信号的数据速率选择线路代码，使得编码信号在频域中基本上彼此正交。这样，两个或多个编码信号可以通过具有很少或没有干扰的单个物理介质进行组合和发送。用于编码和发送数字信号的发射机包含用于对数字信号进行编码的编码器和用于组合经编码的信号以进行经由单个物理介质传输的组合器。用于接收和解码组合编码信号的接收器包含用于提取各编码信号和线解码器的滤波器，用于解码各编码信号以产生原始数字数据信号。

6. 发明授权

US08855257B2 Adaptation techniques in MIMO 有权
标题翻译： MIMO中的适配技术
公开(公告)号：US08855257B2
公开(公告)日：2014-10-07
申请号：US12186368
申请日：2008-08-05
申请人： Syed Aon Mujtaba , Xiaowen Wang
发明人： Syed Aon Mujtaba , Xiaowen Wang
IPC分类号： H04B7/10 , H04L1/06 , H04L1/00 , H04B7/04 , H04B7/06
CPC分类号： H04B7/0413 , H04B7/0417 , H04B7/0669 , H04B7/068 , H04B7/0888 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/0054 , H04L1/0625
摘要： A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal. The method further includes determining a modulation and coding scheme based on the signal to interference and noise ratio and a receiver type.
摘要翻译：公开了一种多输入多输出反馈的方法。根据本发明的实施例，多输入多输出反馈方法包括接收来自基站的参考信号的接收机，并根据接收到的参考信号计算信噪比。该方法还包括基于信号与干扰和噪声比确定调制和编码方案以及接收机类型。

7. 发明申请

US20090199076A1 ACKNOWLEDGEMENT MESSAGE MODIFICATION IN COMMUNICATION NETWORKS 有权
标题翻译：通信网络中的确认消息修改
公开(公告)号：US20090199076A1
公开(公告)日：2009-08-06
申请号：US12422696
申请日：2009-04-13
申请人： Jan Boer , Wilhelmus Diepstraten , Joachim S. Hammerschmidt , Syed Aon Mujtaba
发明人： Jan Boer , Wilhelmus Diepstraten , Joachim S. Hammerschmidt , Syed Aon Mujtaba
IPC分类号： G06F11/07
CPC分类号： H04L1/1829
摘要： A station for a communications network. In one embodiment, the station includes a decoder, a check processor, and a transmitter. The decoder is adapted to decode a received encoded data unit. The check processor is adapted to determine whether the encoded data unit has been correctly received. The transmitter is adapted to initiate, prior to the check processor completing the determination whether the encoded data unit has been correctly received, the transmission of an acknowledgment message comprising a frame having a plurality of different fields of data. The transmitter is adapted to modify the transmission of the acknowledgment message if the check processor determines that the data unit has not been correctly received.
摘要翻译：通信网站。在一个实施例中，站包括解码器，检查处理器和发射器。解码器适于对接收到的编码数据单元进行解码。检查处理器适于确定编码数据单元是否已被正确接收。所述发射机适于在所述检查处理器完成所述编码数据单元是否已被正确接收的确定之前发起包括具有多个不同数据场的帧的确认消息的发送。如果检查处理器确定数据单元未被正确接收，则发射机适于修改确认消息的传输。

8. 发明授权

US07355477B2 Transmitter power control loop for high-speed wireless LANs 有权
标题翻译：用于高速无线LAN的变送器功率控制回路
公开(公告)号：US07355477B2
公开(公告)日：2008-04-08
申请号：US11423759
申请日：2006-06-13
申请人： Syed Aon Mujtaba , Edward E. Campbell
发明人： Syed Aon Mujtaba , Edward E. Campbell
IPC分类号： H03G3/10
CPC分类号： H03G1/0088 , H03G3/001 , H03G3/3042
摘要： A low cost, robust method and apparatus for controlling the gain of a power amplifier to compensate for changes that are gradual with time. The bias circuit of a power amplifier is sent one of three signals in response to a measurement of the average output power level of the power amplifier. If the average output power lever is less than a desired value, a signal to increment the bias current by a set amount is sent, so that the output power increases. If the average output power lever is more than the desired value, a signal to decrement the bias current by a set amount is sent. A third signal may be sent that causes the bias circuit to reset to a default value. The three signals may be sent as a two bit digital signal.
摘要翻译：用于控制功率放大器的增益以补偿随着时间逐渐变化的变化的低成本，鲁棒的方法和装置。响应于功率放大器的平均输出功率电平的测量，功率放大器的偏置电路被发送三个信号之一。如果平均输出功率杆小于期望值，则发送将偏置电流增加设定量的信号，使得输出功率增加。如果平均输出功率杆大于期望值，则发送将偏置电流减小设定量的信号。可以发送导致偏置电路复位到默认值的第三信号。三个信号可以作为两位数字信号发送。

9. 发明申请

US20070285170A1 TRANSMITTER POWER CONTROL LOOP FOR HIGH-SPEED WIRELESS LANs 有权
标题翻译：用于高速无线局域网的发射机功率控制环
公开(公告)号：US20070285170A1
公开(公告)日：2007-12-13
申请号：US11423759
申请日：2006-06-13
申请人： Syed Aon Mujtaba , Edward E. Campbell
发明人： Syed Aon Mujtaba , Edward E. Campbell
IPC分类号： H03G3/10
CPC分类号： H03G1/0088 , H03G3/001 , H03G3/3042
摘要： A low cost, robust method and apparatus for controlling the gain of a power amplifier to compensate for changes that are gradual with time. The bias circuit of a power amplifier is sent one of three signals in response to a measurement of the average output power level of the power amplifier. If the average output power lever is less than a desired value, a signal to increment the bias current by a set amount is sent, so that the output power increases. If the average output power lever is more than the desired value, a signal to decrement the bias current by a set amount is sent. A third signal may be sent that causes the bias circuit to reset to a default value. The three signals may be sent as a two bit digital signal.
摘要翻译：用于控制功率放大器的增益以补偿随着时间逐渐变化的变化的低成本，鲁棒的方法和装置。响应于功率放大器的平均输出功率电平的测量，功率放大器的偏置电路被发送三个信号之一。如果平均输出功率杆小于期望值，则发送将偏置电流增加设定量的信号，使得输出功率增加。如果平均输出功率杆大于期望值，则发送将偏置电流减小设定量的信号。可以发送导致偏置电路复位到默认值的第三信号。三个信号可以作为两位数字信号发送。

10. 发明授权

US06813254B1 Methods and apparatus for wireless communication using code division duplex time-slotted CDMA 有权
标题翻译：使用码分双工时隙CDMA的无线通信方法和装置
公开(公告)号：US06813254B1
公开(公告)日：2004-11-02
申请号：US09200521
申请日：1998-11-25
申请人： Syed Aon Mujtaba
发明人： Syed Aon Mujtaba
IPC分类号： H04B7216
CPC分类号： H04L5/143 , H04L5/023
摘要： Methods and apparatus for wireless communication in systems such as omni-beam and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance with the invention, referred to as code division duplex (CDD) time-slotted CDMA, uplink and downlink portions of the system are separated using code division duplexing, while the users within a given cell are also separated using codes, e.g., using time-slotted CDMA. In a second technique in accordance with the invention, referred to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions of the system are separated using time division duplexing, e.g., time slots, while the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both the CDD and TDD techniques may make use of an electronically-steered beam which is designed to provide simultaneous coverage within a given cell for two or more users separated by codes. In a third technique in accordance with the invention, referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink portions of the system are separated in frequency, while the users are, e.g., also separated in frequency.
摘要翻译：全方位和窄波束固定无线环路（FWL）系统中无线通信的方法和装置。在根据本发明的第一技术中，被称为码分双工（CDD）时隙的CDMA，系统的上行链路和下行链路部分使用码分双工分离，而给定小区内的用户也使用代码分离，例如使用时隙CDMA。在根据本发明的第二种技术中，称为时分双工（TDD）时隙CDMA，系统的上行链路和下行链路部分使用时分双工（例如，时隙）分离，而给定小区中的用户使用代码分离，例如时隙CDMA。 CDD和TDD技术都可以利用电子控制的光束，其被设计为在由代码分隔的两个或多个用户的同一个小区内提供同时的覆盖。在根据本发明的被称为正交频分复用（OFDM）的第三技术中，系统的上行链路和下行链路部分在频率上分离，而用户例如也在频率上分离。

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