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1. 发明授权

US06324387B1 LNA control-circuit for receive closed loop automatic gain control 失效
标题翻译： LNA控制电路用于接收闭环自动增益控制
公开(公告)号：US06324387B1
公开(公告)日：2001-11-27
申请号：US09222400
申请日：1998-12-29
申请人： Farbod Kamgar , Antoine J. Rouphael , Mariam Motamed
发明人： Farbod Kamgar , Antoine J. Rouphael , Mariam Motamed
IPC分类号： H04B106
CPC分类号： H03G3/3052
摘要： A controlled receive device is disclosed having an amplifier circuit, which receives an input signal, and a control circuit which receives the input signal and outputs a controlled signal to a receiver. The receiver outputs an output signal. A controller varies the gain of the amplifier circuit in response to levels of the controlled signal and the output signal. The control circuit outputs a controlled indicator signal indicative of a level of the controlled signal and the receiver outputs an output indicator signal indicative of the output signal level. The controlled indicator signal and the output indicator signal are compared using comparators, to respective reference or threshold levels for producing control signals used by the controller for varying the amplifier gain.
摘要翻译：公开了一种受控接收装置，其具有接收输入信号的放大器电路和接收输入信号并将受控信号输出到接收器的控制电路。接收器输出一个输出信号。控制器响应于受控信号和输出信号的电平而改变放大器电路的增益。控制电路输出指示受控信号电平的受控指示信号，接收器输出表示输出信号电平的输出指示信号。使用比较器将受控指示信号和输出指示信号进行比较，以相应的参考或阈值电平，以产生控制器用于改变放大器增益的控制信号。

2. 发明授权

US06205167B1 Apparatus and method for code tracking in an IS-95 spread spectrum communications system 失效
标题翻译： IS-95扩频通信系统中的码跟踪装置和方法
公开(公告)号：US06205167B1
公开(公告)日：2001-03-20
申请号：US08996668
申请日：1997-12-23
申请人： Farbod Kamgar , Mariam Motamed , Antoine Jean Rouphael
发明人： Farbod Kamgar , Mariam Motamed , Antoine Jean Rouphael
IPC分类号： H04L2730
CPC分类号： H04B1/7085
摘要： A pseudo-noise generator (516) generates an on-time component, an early component and a late component of a pseudo-noise code signal in response to an error signal. The on-time component is routed to a deinterleave and demodulate device (210) which demodulates and decodes baseband signals from received spread spectrum signals. An adder (518) subtracts the early component from the late component to form a summation signal. A multiplier (520) multiplies the summation with the received signal to form a product signal. An integrator (522) integrates the product signal to form the error signal. The error signal is fed back into the pseudo-noise generator (516) to fine tune the on-time component, the early component and the late component of the pseudo-noise code signal. As a result, a spread spectrum signal is demodulated and decoded using only one correlator (504) instead of two.
摘要翻译：伪噪声发生器（516）响应于误差信号产生伪噪声码信号的接通时间分量，早期分量和后期分量。导通时间分量被路由到去交织和解调设备（210），其解调和解码来自接收的扩频信号的基带信号。加法器（518）从后期分量中减去早期分量以形成求和信号。乘法器（520）将求和与接收信号相乘以形成乘积信号。积分器（522）积分积信号以形成误差信号。误差信号被反馈到伪噪声发生器（516）中以微调伪噪声码信号的接通时间分量，早期分量和后期分量。结果，扩展频谱信号仅使用一个相关器（504）来解调和解码，而不是两个。

3. 发明授权

US06549559B2 Apparatus and method for locking onto a psuedo-noise code in an IS-95 spread spectrum communications system 失效
标题翻译：用于锁定IS-95扩频通信系统中的伪噪声码的装置和方法
公开(公告)号：US06549559B2
公开(公告)日：2003-04-15
申请号：US08996669
申请日：1997-12-23
申请人： Farbod Kamgar , Mariam Motamed , Antoine Jean Rouphael
发明人： Farbod Kamgar , Mariam Motamed , Antoine Jean Rouphael
IPC分类号： H04B169
CPC分类号： H04B1/7085 , H04B1/709
摘要： In response to an error signal, a pseudo-noise generator (312 or 416) generates an on-time pseudo-noise signal, an early pseudo-noise signal delayed by less than one-half of a chip interval, and a late pseudo-noise signal advanced by less than one-half of a chip interval. A correlator (302 and 304, or 404) correlates a received signal with the early and late pseudo-noise signals to generate the error signal. The combination of the pseudo-noise generator (312 or 416) and the correlator (302 and 304, or 404) creates a loop in which the on-time pseudo-noise signal tracks a received pseudo-noise code more closely than in prior art devices and enables a deinterleave and decode device (210) within the receiver to demodulate the received signal more effectively.
摘要翻译：响应于误差信号，伪噪声发生器（312或416）产生导通时间伪噪声信号，延迟小于码片间隔的一半的早期伪噪声信号，噪声信号提前不到芯片间隔的一半。相关器（302和304或404）将接收信号与早期和晚期伪噪声信号相关以产生误差信号。伪噪声发生器（312或416）和相关器（302和304或404）的组合产生一个循环，其中导通时间伪噪声信号比现有技术更接近地跟踪接收的伪噪声码并且使得接收机内的解交织和解码设备（210）能够更有效地解调所接收的信号。

4. 发明授权

US06278725B1 Automatic frequency control loop multipath combiner for a rake receiver 有权
标题翻译：用于耙式接收机的自动频率控制环路多路复用器
公开(公告)号：US06278725B1
公开(公告)日：2001-08-21
申请号：US09216264
申请日：1998-12-18
申请人： Antoine J. Rouphael , Farbod Kamgar
发明人： Antoine J. Rouphael , Farbod Kamgar
IPC分类号： H04B1707
CPC分类号： H04B1/7115 , H04B1/7117 , H04L27/2273
摘要： A Rake receiver having fingers is disclosed. The Rake receiver includes frequency discriminators for automatic frequency control and a combiner. Each finger includes a frequency discriminator. The combiner combines outputs from the frequency discriminators to output an average error signal which is fed back to the frequency discriminators for removing frequency offsets from all the fingers. The combiner includes an adder which adds the outputs of the frequency discriminators, and a divide circuit which divides the combined adder output by the number of the outputs which were added together to form the average error signal. The combiner further includes a filter connected between the adder and the divide circuit. In addition, further adders are provided where each of theses adders receives the average error signal and a respective one of the outputs from the frequency discriminators in order to provide an estimate of one of the frequency offsets.
摘要翻译：公开了一种具有手指的耙式接收器。耙式接收机包括用于自动频率控制的频率鉴别器和组合器。每个手指包括一个鉴频器。组合器组合来自频率鉴别器的输出，以输出平均误差信号，该平均误差信号被反馈到用于从所有手指移除频率偏移的鉴频器。组合器包括加法器，该加法器将频率鉴别器的输出相加，除法电路将组合加法器输出除以加在一起的输出数，形成平均误差信号。组合器还包括连接在加法器和除法电路之间的滤波器。此外，提供了另外的加法器，其中每个加法器接收来自频率鉴别器的平均误差信号和相应的一个输出，以便提供频率偏移之一的估计。

5. 发明授权

US06272189B1 Signal correlation technique for a receiver of a spread spectrum signal including a pseudo-random noise code that reduces errors when a multipath signal is present 有权
标题翻译：一种扩频信号的接收机的信号相关技术，包括当存在多径信号时减少误差的伪随机噪声码
公开(公告)号：US06272189B1
公开(公告)日：2001-08-07
申请号：US09241797
申请日：1999-02-01
申请人： Lionel Garin , Mark Zhodzicshsky , Victor Veitsel , Stanislov Sila-Novatisky , Farbod Kamgar
发明人： Lionel Garin , Mark Zhodzicshsky , Victor Veitsel , Stanislov Sila-Novatisky , Farbod Kamgar
IPC分类号： H04L2706
CPC分类号： H04B1/7085 , G01S19/22 , G01S19/30
摘要： A receiver of a radio frequency signal having a pseudo-random noise (PRN) code modulated on a carrier, and techniques of processing such a signal that are especially adapted for ranging applications. Such an application is in a global positioning system (GPS or GLONASS) receiver. Both of the receiver DLL code and PLL carrier loops include a loop component that senses an error in its main loop caused by the presence of a multipath signal. The main loop is continuously adjusted by this sensed error, thereby causing the loop to track more precisely and minimize the effect of the multipath signal. The result is a more accurate range measurement.
摘要翻译：具有在载波上调制的伪随机噪声（PRN）码的射频信号的接收机，以及处理特别适用于测距应用的信号的技术。这种应用在全球定位系统（GPS或GLONASS）接收机中。接收器DLL代码和PLL载波环路都包括一个环路分量，其感测由多径信号的存在引起的其主环路中的错误。通过该感测误差连续地调整主回路，从而使得循环更精确地跟踪并最小化多径信号的影响。结果是更精确的量程测量。

6. 发明授权

US5901183A Signal correlation technique for a receiver of a spread spectrum signal including a pseudo-random noise code that reduces errors when a multipath signal is present 失效
标题翻译：一种扩频信号的接收机的信号相关技术，包括当存在多径信号时减少误差的伪随机噪声码
公开(公告)号：US5901183A
公开(公告)日：1999-05-04
申请号：US719611
申请日：1996-09-25
申请人： Lionel Garin , Mark Zhodzicshsky , Victor Veitsel , Stanislov Sila-Novatisky , Farbod Kamgar
发明人： Lionel Garin , Mark Zhodzicshsky , Victor Veitsel , Stanislov Sila-Novatisky , Farbod Kamgar
IPC分类号： G01S1/00 , G01S19/22 , G01S19/30 , H04B1/7085 , H04L27/06 , H04L1/02
CPC分类号： H04B1/7085 , G01S19/22 , G01S19/30
摘要： A receiver of a radio frequency signal having a pseudo-random noise (PRN) code modulated on a carrier, and techniques of processing such a signal that are especially adapted for ranging applications. Such an application is in a global positioning system (GPS or GLONASS) receiver. Both of the receiver DLL code and PLL carrier loops include a loop component that senses an error in its main loop caused by the presence of a multipath signal. The main loop is continuously adjusted by this sensed error, thereby causing the loop to track more precisely and minimize the effect of the multipath signal. The result is a more accurate range measurement.
摘要翻译：具有在载波上调制的伪随机噪声（PRN）码的射频信号的接收机，以及处理特别适用于测距应用的信号的技术。这种应用在全球定位系统（GPS或GLONASS）接收机中。接收器DLL代码和PLL载波环路都包括一个环路分量，其感测由多径信号的存在引起的其主环路中的错误。通过该感测误差连续地调整主回路，从而使得循环更精确地跟踪并最小化多径信号的影响。结果是更精确的量程测量。

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