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    • 3. 发明授权
    • High rate, time division multiplexed, multi-MPSK MODEM with imbedded high signal-to-noise ratio tracking channel
    • 高速率,时分复用,具有嵌入式高信噪比跟踪通道的多MPSK调制解调器
    • US07161920B2
    • 2007-01-09
    • US10292141
    • 2002-11-12
    • Harold L. SimonsenKent R. BrueningRandal R. Sylvester
    • Harold L. SimonsenKent R. BrueningRandal R. Sylvester
    • H04Q7/28H04B1/69
    • H04B1/707H04B2201/70701H04L27/18
    • A novel MODEM and method of operating a MODEM usable in spread spectrum communication utilizing multiple waveforms in orthogonal spread signals imbeds a tracking signal in one of the spread signals for efficient tracking by a receiver so that both spread signals can have wideband characteristics. Therefore, one spread signal contains a tracking channel and a wideband channel, allowing for higher order modulation in the wideband channel for transmitting information, while still providing good tracking features. The second spread signal is an orthogonal wideband channel serving as the main high data rate conduit. In the preferred embodiment, the first portion of the waveform (in the first spread signal) is modulated using Bi-Bi-Phase Shift Keying (Bi-BPSK), while the second portion of the waveform (in the second spread signal) is modulated using Multiple Phase Shift Keying (MPSK). The two waveform portions are Time Division Multiplexed (TDM) at the chipping rate. A higher overall data bandwidth can be achieved for the Bi-BPSK modulation technique using the same channel bandwidth.
    • 使用在正交扩展信号中利用多个波形的可用于扩展频谱通信的MODEM的新型MODEM和方法在一个扩展信号中嵌入跟踪信号,以便接收机有效跟踪,使得两个扩展信号都可以具有宽带特性。 因此,一个扩展信号包含跟踪信道和宽带信道,允许宽带信道中的更高阶调制用于传输信息,同时仍然提供良好的跟踪特征。 第二扩展信号是用作主高数据速率管道的正交宽带信道。 在优选实施例中,波形的第一部分(在第一扩展信号中)使用Bi-Bi相移键控(Bi-BPSK)进行调制,而波形的第二部分(在第二扩展信号中)被调制 使用多相移键控(MPSK)。 两个波形部分是切分率的时分复用(TDM)。 对于使用相同信道带宽的Bi-BPSK调制技术,可以实现更高的总体数据带宽。
    • 5. 发明授权
    • Six channel digital demodulator
    • 六通道DIGITAL DEMODULATOR
    • US5099494A
    • 1992-03-24
    • US559012
    • 1990-07-26
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • H04B1/66H04B1/707H04L27/00H04L27/22H04L27/233
    • H04B1/707H04L27/2332H04L2027/003H04L2027/0057H04L2027/0065
    • A six channel programmable digital demodulator of the type designed to be manufactured as an integrated circuit with other components comprises a code channel, a level channel and a phase channel each of which includes two accumulate and scale circuits. Each of the accumulate and scale circuits is connected to an I or a Q channel of the data which has been despread after being received from the communications receiver. The outputs of two of the accumulate and scale circuits are applied to a two to one multiplexor which is controlled by a command generator to provide a selectable output defining a clock error signal. The remaining four accumulate and scale circuits are connected to a first four to one multiplexor to provide a selectable output defining a clock error signal. The same four remaining outputs from said accumulate and scale circuits are connected to a second four to one multiplexor having an output defining a carrier error signal.
    • 一种被设计成与其他部件集成电路一起制造的六通道可编程数字解调器包括码通道,电平通道和相位通道,每个通道包括两个累积和标尺电路。 每个累积和缩放电路连接到在从通信接收机接收到之后被解扩的数据的I或Q信道。 两个累积和缩放电路的输出被施加到由指令发生器控制的两对多路复用器,以提供定义时钟误差信号的可选输出。 剩余的四个累积和缩放电路连接到第一个四对多路复用器,以提供定义时钟误差信号的可选输出。 来自所述累积和缩放电路的相同的四个剩余输出连接到具有定义载波误差信号的输出的第二四对一多路复用器。
    • 6. 发明授权
    • Programmable digital frequency-phase discriminator
    • 可编程数字频率鉴相器
    • US5022048A
    • 1991-06-04
    • US559016
    • 1990-07-26
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • H04B1/66H04L27/00H04L27/14H04L27/22H04L27/233
    • H04L27/2332H04L2027/003H04L2027/0057
    • A present invention novel frequency-phase discriminator has input channels for real and imaginary data which are coupled to two programmable despreaders. The first despreader has its real and imaginary outputs coupled to individual programmable data rate filters which have their individual outputs coupled to a quadrant detector that generates a phase angle direction signal and sign magnitude. The second despread has its real and imaginary outputs connected through individual programmable inverters to data rate filters which have their individual outputs coupled to a quadrant selector that selects error signal data rate information from one of four quadrant axes signals. A command generator is programmably coupled to the output of the quadrant detector and to the input of the quadrant selector and provides a selection signal to the quadrant selector which produces a frequency error signal output employed in a frequency lock loop or in a phase lock loop.
    • 本发明新颖的频率鉴相器具有耦合到两个可编程解扩器的实数和虚数据的输入通道。 第一解扩器具有耦合到各个可编程数据速率滤波器的实部和虚拟输出,其各自的输出耦合到产生相位角方向信号和符号幅度的象限检测器。 第二个解扩器具有通过单个可编程逆变器连接到数据速率滤波器的实际和虚拟输出,其数据速率滤波器的各自的输出耦合到从四象限轴信号之一选择误差信号数据速率信息的象限选择器。 命令发生器可编程地耦合到象限检测器的输出端和象限选择器的输入端,并向象限选择器提供选择信号,该选择信号产生频率锁定环路或锁相环路中使用的频率误差信号输出。
    • 7. 发明授权
    • Programmable gain accumulator
    • 可编程增益累加器
    • US5062071A
    • 1991-10-29
    • US559019
    • 1990-07-26
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • G06F7/62
    • G06F7/62
    • A programmable digital gain accumulator is provided with a digital accumulator having approximately the same number of significant bits as the input data stream. The most significant bit of the input data stream is a sign bit coupled to a series cascade of flip-flops providing a selectable plurality of flip-flop delay times. The carry output of the accumulator is coupled to an input up/down counter having its output coupled to a multiplexor capable of selecting one of the carry outputs of the input up/down counter. The up or down count is controlled by the sign bit input from the sign bit delay circuit. The output of the multiplexor is inputted to an output up/down counter whose parallel output is the parallel synchronous digital gain command signal for direct use by a utilization device. The up or down count of the output up/down counter is controlled by a delayed sign input from the sign bit delay circuit.
    • 可编程数字增益累加器具有与输入数据流大致相同数量的有效位的数字累加器。 输入数据流的最高有效位是耦合到提供可选择的多个触发器延迟时间的触发器的串联级联的符号位。 累加器的进位输出耦合到输入上/下计数器,其输出耦合到能够选择输入上/下计数器的进位输出中的一个的多路复用器。 向上或向下计数由符号位延迟电路输入的符号位控制。 多路复用器的输出被输入到并行输出是并行同步数字增益命令信号的输出上/下计数器,供直接由利用装置使用。 输出上/下计数器的向上或向下计数由来自符号位延迟电路的延迟符号输入控制。
    • 10. 发明授权
    • Digital gain controller
    • 数字增益控制器
    • US5134631A
    • 1992-07-28
    • US559018
    • 1990-07-26
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • Samuel C. KingstonSteven T. BarhamHarold L. Simonsen
    • H03G3/20H04K3/00
    • H03G3/3052H04K3/224
    • A novel programmable digital gain controller is provided for the automatic gain control loop of a communications receiver. The digital gain controller comprises a pair of digital detectors coupled to the real and imaginary components of a data stream for providing digital data magnitude output signals which are coupled to an adder whose output is coupled to a first input of a comparator having a second input coupled to a predetermined reference level command. The output of the comparator generates a digital error signal which is coupled to the input of a programmable gain accumulator having a second input proportional gain command so as to provide at the output of the programmable gain accumulator a digital gain command which may be coupled to a variable gain controlled amplifier which is connected in the input data stream of the channel of a communications receiver to provide a predetermine amplifier output level.
    • 为通信接收机的自动增益控制环路提供了一种新颖的可编程数字增益控制器。 数字增益控制器包括耦合到数据流的实部和虚部的一对数字检测器,用于提供数字数据幅度输出信号,耦合到加法器,其输出耦合到具有第二输入耦合的比较器的第一输入 到预定的参考水平命令。 比较器的输出产生数字误差信号,该数字误差信号耦合到具有第二输入比例增益指令的可编程增益累加器的输入端,以便在可编程增益累加器的输出处提供数字增益命令,该数字增益命令可耦合到 可变增益控制放大器,其连接在通信接收机的信道的输入数据流中,以提供预定的放大器输出电平。