公开(公告)号：US06459883B2

公开(公告)日：2002-10-01

申请号：US09920094

申请日：2001-07-31

申请人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  David M. Holmes ,  Joel D. Medlock ,  Murali Krishnan

发明人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  David M. Holmes ,  Joel D. Medlock ,  Murali Krishnan

IPC分类号： H04B1700

CPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L2027/0026

摘要： A rake receiver in accordance with an exemplary embodiment of this invention is configurable by an external agent (e.g., microcontroller, DSP, or state machine) to suit the particular requirements of different spread spectrum systems. In an exemplary embodiment, the receiver includes multiple fingers. Each finger includes a plurality of generic despreaders/descramblers, a plurality of generic dechannelizers coupled to the despreaders/descramblers, and at least one timing estimation controller coupled to the despreaders/descramblers. The finger also includes at least one phase estimation controller, at least one frequency estimation controller, and at least one energy estimation controller all coupled to the generic dechannelizers.

摘要翻译： 根据本发明的示例性实施例的耙式接收机可由外部代理（例如，微控制器，DSP或状态机）来配置，以适应不同扩频系统的特定要求。 在示例性实施例中，接收机包括多个指状物。 每个手指包括多个通用去扩展器/解扰器，耦合到解扩器/解扰器的多个通用去通道化器，以及耦合到解扩器/解扰器的至少一个定时估计控制器。 手指还包括至少一个相位估计控制器，至少一个频率估计控制器和至少一个能量估计控制器，所述至少一个能量估计控制器全部耦合到通用去通道分配器。

公开(公告)号：US06967999B2

公开(公告)日：2005-11-22

申请号：US09752050

申请日：2000-12-29

申请人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  Joel D. Medlock ,  Christopher C. Woodthorpe

发明人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  Joel D. Medlock ,  Christopher C. Woodthorpe

IPC分类号： H04B1/40 ,  H04B17/00 ,  H04L12/56 ,  H04L25/00 ,  H04L27/00 ,  H04W24/00 ,  H04W28/10 ,  H04W88/08 ,  H04W88/10

CPC分类号： H04B1/0007 ,  H04B1/0003 ,  H04B1/406 ,  H04W24/00 ,  H04W28/10 ,  H04W88/08 ,  H04W88/10

摘要： An apparatus for digitally processing signals within wireless communications base-stations which includes a channel pooling signal processor and a digital signal processor. The channel pooling signal processor includes a plurality of computation units typically realized in a heterogeneous multiprocessing architecture, a test interface for testing the function of the plurality of the computation units, a general-purpose microprocessor for managing the dataflow into and out of the channel pooling signal processor as well as effecting the control and configuration of the computation units, and an interconnect mechanism for connecting the plurality of computation units to the input, output, test interface, and the general-purpose microprocessor.

摘要翻译： 一种用于数字处理无线通信基站内的信号的装置，包括信道汇集信号处理器和数字信号处理器。 信道池信号处理器包括通常在异构多处理架构中实现的多个计算单元，用于测试多个计算单元的功能的测试接口，用于管理数据流进出信道池的通用微处理器 信号处理器以及实现计算单元的控制和配置，以及用于将多个计算单元连接到输入，输出，测试接口和通用微处理器的互连机构。

公开(公告)号：US07254649B2

公开(公告)日：2007-08-07

申请号：US11198692

申请日：2005-08-05

申请人： Ravi Subramanian ,  Uma Jha ,  Joel D. Medlock

发明人： Ravi Subramanian ,  Uma Jha ,  Joel D. Medlock

IPC分类号： G06F13/10 ,  H04B1/38

CPC分类号： H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

摘要： A wireless spread spectrum communication platform for processing a communication signal is disclosed herein. The wireless communication platform includes a first computing element, a second computing element, and a reconfigurable interconnect. The first computing element is coupled to the second computing element via the reconfigurable interconnect. A design configuration of the first computing element is heterogeneous with respect to a design configuration of the second computing element. The reconfigurable interconnect has an uncommitted architecture, thereby allowing it to be configured by an outside source to couple portions of the first reconfigurable interconnect with portions of the second reconfigurable interconnect in a variety of combinations. The first computing element, the second computing element, and the reconfigurable interconnect operable to perform discrete functions suitable for processing of the communication signal.

摘要翻译： 本文公开了一种用于处理通信信号的无线扩频通信平台。 无线通信平台包括第一计算元件，第二计算元件和可重构互连。 第一计算元件经由可重构互连耦合到第二计算元件。 关于第二计算元件的设计配置，第一计算元件的设计配置是异构的。 可重配置互连具有未提交的架构，从而允许其由外部源配置以将第一可重配置互连的部分以各种组合耦合第二可重配置互连的部分。 第一计算元件，第二计算元件和可重构互连可操作以执行适于处理通信信号的离散功能。

公开(公告)号：US20060039317A1

公开(公告)日：2006-02-23

申请号：US11200854

申请日：2005-08-09

申请人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  Joel Medlock ,  Christopher Woodthorpe

发明人： Ravi Subramanian ,  Keith Rieken ,  Uma Jha ,  Joel Medlock ,  Christopher Woodthorpe

IPC分类号： H04Q7/00

CPC分类号： H04B1/0007 ,  H04B1/0003 ,  H04B1/406 ,  H04W24/00 ,  H04W28/10 ,  H04W88/08 ,  H04W88/10

摘要： An apparatus for digitally processing signals within wireless communications base-stations which includes a channel pooling signal processor and a digital signal processor. The channel pooling signal processor includes a plurality of computation units typically realized in a heterogeneous multiprocessing architecture, a test interface for testing the function of the plurality of the computation units, a general-purpose microprocessor for managing the dataflow into and out of the channel pooling signal processor as well as effecting the control and configuration of the computation units, and an interconnect mechanism for connecting the plurality of computation units to the input, output, test interface, and the general-purpose microprocessor.

摘要翻译： 一种用于数字处理无线通信基站内的信号的装置，包括信道汇集信号处理器和数字信号处理器。 信道池信号处理器包括通常在异构多处理架构中实现的多个计算单元，用于测试多个计算单元的功能的测试接口，用于管理数据流进出信道池的通用微处理器 信号处理器以及实现计算单元的控制和配置，以及用于将多个计算单元连接到输入，输出，测试接口和通用微处理器的互连机构。

公开(公告)号：US20060003757A1

公开(公告)日：2006-01-05

申请号：US11193851

申请日：2005-07-29

申请人： Ravi Subramanian ,  Uma Jha ,  Joel Medlock

发明人： Ravi Subramanian ,  Uma Jha ,  Joel Medlock

IPC分类号： H04Q7/20

CPC分类号： H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

摘要： A wireless spread spectrum communication platform for processing a communication signal is disclosed herein. The wireless communication platform includes a first computing element, a second computing element, and a reconfigurable interconnect. The first computing element is coupled to the second computing element via the reconfigurable interconnect. A design configuration of the first computing element is heterogeneous with respect to a design configuration of the second computing element. The reconfigurable interconnect has an uncommitted architecture, thereby allowing it to be configured by an outside source to couple portions of the first reconfigurable interconnect with portions of the second reconfigurable interconnect in a variety of combinations. The first computing element, the second computing element, and the reconfigurable interconnect operable to perform discrete functions suitable for processing of the communication signal.

公开(公告)号：US20050282534A1

公开(公告)日：2005-12-22

申请号：US11198692

申请日：2005-08-05

申请人： Ravi Subramanian ,  Uma Jha ,  Joel Medlock

发明人： Ravi Subramanian ,  Uma Jha ,  Joel Medlock

IPC分类号： H04B1/707 ,  H04M3/00

CPC分类号： H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

摘要： A wireless spread spectrum communication platform for processing a communication signal is disclosed herein. The wireless communication platform includes a first computing element, a second computing element, and a reconfigurable interconnect. The first computing element is coupled to the second computing element via the reconfigurable interconnect. A design configuration of the first computing element is heterogeneous with respect to a design configuration of the second computing element. The reconfigurable interconnect has an uncommitted architecture, thereby allowing it to be configured by an outside source to couple portions of the first reconfigurable interconnect with portions of the second reconfigurable interconnect in a variety of combinations. The first computing element, the second computing element, and the reconfigurable interconnect operable to perform discrete functions suitable for processing of the communication signal.

摘要翻译： 本文公开了一种用于处理通信信号的无线扩频通信平台。 无线通信平台包括第一计算元件，第二计算元件和可重构互连。 第一计算元件经由可重构互连耦合到第二计算元件。 关于第二计算元件的设计配置，第一计算元件的设计配置是异构的。 可重配置互连具有未提交的架构，从而允许其由外部源配置以将第一可重配置互连的部分以各种组合耦合第二可重配置互连的部分。 第一计算元件，第二计算元件和可重构互连可操作以执行适于处理通信信号的离散功能。

公开(公告)号：US08899278B2

公开(公告)日：2014-12-02

申请号：US13162739

申请日：2011-06-17

申请人： Joseph Perry Cohen ,  David John Farese ,  Ravi Subramanian

发明人： Joseph Perry Cohen ,  David John Farese ,  Ravi Subramanian

IPC分类号： B65B1/30 ,  F17C5/06 ,  F17C7/02

CPC分类号： F17C5/06 ,  F17C7/02 ,  F17C2203/0604 ,  F17C2203/0663 ,  F17C2221/012 ,  F17C2221/033 ,  F17C2223/0123 ,  F17C2223/036 ,  F17C2225/0123 ,  F17C2225/036 ,  F17C2227/0157 ,  F17C2227/042 ,  F17C2227/043 ,  F17C2227/047 ,  F17C2270/0168 ,  F17C2270/0176 ,  F17C2270/0178 ,  Y02E60/321

摘要： A method for dispensing compressed gas from two or more compressed gas storage volumes to receiving vessel such as vehicle fuel tanks. Control instructions are provided to cycle the compressed gas storage volumes through pressure cycles in a rolling rotating cascading manner such that each of the compressed gas storage volumes cycle from an upper pressure limit to a lower pressure limit.

摘要翻译： 一种将压缩气体从两个或更多个压缩气体储存容器分配到诸如车辆燃料箱的接收容器的方法。 提供控制指令以使压缩气体存储容积以滚动旋转级联方式的压力循环循环，使得每个压缩气体存储容积从上限压力循环到较低的压力极限。

公开(公告)号：US07010061B2

公开(公告)日：2006-03-07

申请号：US09751783

申请日：2000-12-29

申请人： Ravi Subramanian

发明人： Ravi Subramanian

IPC分类号： H04L27/14 ,  H04L27/16 ,  H04L27/22

CPC分类号： H04B1/0003 ,  H04B1/0007 ,  H04B1/28 ,  H04B1/406 ,  H04B1/70735 ,  H04B1/7085 ,  H04B2201/70701 ,  H04B2201/70711 ,  H04L25/0204

摘要： A configurable all-digital coherent demodulator system for spread spectrum digital communications is disclosed herein. The demodulator system includes an extended and long code demodulator (ELCD) coupled to a traffic channel demodulator (TCD) and a parameter estimator (PE). The demodulator also includes a pilot assisted correction device (PACD) that is coupled to the PE and the TCD. The ELCD provides a code-demodulated signal to the TCD and the PE. In turn, the TCD provides a demodulated output data signal to the PE. The PACD corrects the phase error of the demodulated output data based on an error estimate that is fed forward from the PE. Accumulation operations in the ELCD, TCD, and PE are all programmable. Similarly, a phase delay in the PACD is also programmable to provide synchronization with the error estimate from the PE.

公开(公告)号：US5539776A

公开(公告)日：1996-07-23

申请号：US158118

申请日：1993-11-24

申请人： Ravi Subramanian

发明人： Ravi Subramanian

IPC分类号： H03D7/00 ,  H03D7/16 ,  H03D13/00 ,  H04L27/156 ,  H04L27/233 ,  H03D3/22

CPC分类号： H03D7/161 ,  H03D7/00 ,  H03D13/001 ,  H03D2200/005 ,  H03D2200/006 ,  H03D2200/007

摘要： An intermediate frequency (IF) to baseband frequency signal converter for decoding an analog IF signal using phase information contained in the IF signal includes a first signal generator for generating an analog square wave signal from the IF signal. The signal converter also includes a second signal generator for generating a local phase reference signal, and a phase difference determinator for determining at a particular sampling interval a phase difference between a phase of the analog square wave signal and a phase of the local phase reference signal, wherein the phase difference represents a symbol which the signal converter has decoded from the IF signal.

摘要翻译： 使用包含在IF信号中的相位信息来解码模拟IF信号的基带频率信号转换器的中频（IF）包括用于从IF信号产生模拟方波信号的第一信号发生器。 信号转换器还包括用于产生局部相位参考信号的第二信号发生器和用于在特定取样间隔确定模拟方波信号的相位与局部相位参考信号的相位之间的相位差的相位差确定器 ，其中所述相位差表示所述信号转换器从所述IF信号解码的符号。

公开(公告)号：US5438595A

公开(公告)日：1995-08-01

申请号：US108061

申请日：1993-08-17

申请人： Jong-Keung Cheng ,  Ravi Subramanian

发明人： Jong-Keung Cheng ,  Ravi Subramanian

IPC分类号： G01S11/10 ,  H04L7/033 ,  H04L7/04 ,  H04L27/06

CPC分类号： H04L7/0334 ,  G01S11/10 ,  H04L7/042

摘要： In a digital wireless communication system communicating between a mobile unit and a stationary unit, a received digitally encoded signal is sampled to produce a first sampled digital signal having a plurality of symbols. The short term energy over a plurality of a contiguous symbols is measured. The short term energy symbol over a first plurality of a contiguous short term energy points is measured. The short term energy average over a second plurality of contiguous short term energy points is measured. The second plurality of contiguous short term energy points is spaced apart from the first plurality of contiguous short term energy points. The difference between the first short term energy average and the second short term energy average is calculated to derive an estimate of the speed of the mobile unit relative to the base unit.

摘要翻译： 在移动单元和固定单元之间通信的数字无线通信系统中，接收到的数字编码信号被采样以产生具有多个符号的第一采样数字信号。 测量多个连续符号中的短期能量。 测量第一多个连续的短期能量点中的短期能量符号。 测量第二组连续的短期能量点的短期能量平均值。 所述第二多个连续的短期能量点与所述第一多个相邻的短期能量点间隔开。 计算第一短期能量平均值和第二短期能量平均值之间的差异以导出移动单元相对于基本单元的速度的估计。