公开(公告)号：EP1031933A3

公开(公告)日：2002-07-10

申请号：EP00103393.5

申请日：2000-02-24

申请人： TRW Inc.

发明人： Moretti, Vincent C. ,  Caso, Gregory S.

IPC分类号： G06F17/14 ,  H03H17/02 ,  H04B1/66

CPC分类号： G06F17/141

摘要： The invention is an apparatus and process for performing a discrete Fourier transform and a digital channelizer which divides an input bandwidth into at least some of N channels. An apparatus for performing a discrete Fourier transform in accordance with the invention includes at least one discrete Fourier transform computation stage (304, 305', 402, 410, 412, 414, 419), the at least one discrete Fourier transform computation stage having N inputs representing preselected frequency bands with each input containing an input signal containing real data and P actual outputs each containing an output signal, P being less than N, at least one of the P actual output signals containing a conjugate of one of the N input frequency bands; and a processing device (602, 702), coupled to at least one P actual output containing a signal which is a conjugate, which processes the conjugate as representative of one of the N input frequency bands.

公开(公告)号：EP1187351A2

公开(公告)日：2002-03-13

申请号：EP01113538.1

申请日：2001-06-12

申请人： TRW Inc.

发明人： Oyama, Bert ,  Upton, Eric L. ,  Allen, Barry R. ,  Kintis, Mark ,  Smith, Andrew D. ,  Talbot, Craig R. ,  Brunone, David J. ,  Martin, Donald R. ,  Skones, William M. ,  Smith, Ronald P. ,  Moretti, Vincent C. ,  Claxton, Shimen K.

IPC分类号： H04B1/28

CPC分类号： H04B1/28 ,  H03D7/163

摘要： A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

摘要翻译： 一种用于无线电信系统的接收机（10），其提供接收信号的相对宽带信号处理，而不增加信号失真，使得可以同时处理多个接收信号。 接收器（10）包括专用LNA（16），降频转换器（18）和ADC（20），以在维持接收器性能的同时执行宽带信号处理。 降频转换器（18）采用合适的混频器（28），BPA（32），衰减器（34）和变压器（36），其被调谐以在期望的宽带上提供期望的频率下变频和幅度控制。 根据ADC的特定性能标准（20）选择下变频器器件。 在接收来自ADC（20）的数字信号的接收机（10）中包括专用数字信道化器（22），并将信号分离成多个信道。 在一个实施例中，在单个下变频过程中执行降频转换，并且ADC（20）采用delta-sigma处理来在整个频带上提供数字转换。 在替代实施例中，在双下变频过程中执行降频转换，使得可以使用较不复杂的ADC（62）。

公开(公告)号：EP1168641A2

公开(公告)日：2002-01-02

申请号：EP01113572.0

申请日：2001-06-13

申请人： TRW Inc.

发明人： Claxton, Shimen K. ,  Oyama, Bert K. ,  Kintis, Mark ,  Smith, Andrew D. ,  Talbott, Craig R. ,  Martin, Donald R. ,  Skones, William M. ,  Smith Ronald P. ,  Moretti, Vincent C.

IPC分类号： H04B1/28

CPC分类号： H04B1/0007 ,  H04B1/0003 ,  H04B1/28

摘要： A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

摘要翻译： 一种用于无线电信系统的接收机（10），其提供接收信号的相对宽带信号处理，而不增加信号失真，使得可以同时处理多个接收信号。 接收器（10）包括专用LNA（16），降频转换器（18）和ADC（20），以在维持接收器性能的同时执行宽带信号处理。 降频转换器（18）采用合适的混频器（28），BPA（32），衰减器（34）和变压器（36），其被调谐以在期望的宽带上提供期望的频率下变频和幅度控制。 根据ADC的特定性能标准（20）选择下变频器器件。 在接收来自ADC（20）的数字信号的接收机（10）中包括专用数字信道化器（22），并将信号分离成多个信道。 在一个实施例中，在单个下变频过程中执行降频转换，并且ADC（20）采用delta-sigma处理来在整个频带上提供数字转换。 在替代实施例中，在双下变频过程中执行降频转换，使得可以使用较不复杂的ADC（62）。

公开(公告)号：EP1037399A2

公开(公告)日：2000-09-20

申请号：EP00104548.3

申请日：2000-03-13

申请人： TRW Inc.

发明人： Carrozza, Dominic P. ,  Caso, Gregory S. ,  Moretti, Vincent C. ,  Jue, Reginald ,  Wright, David A.

IPC分类号： H04B7/185

CPC分类号： H04B7/1858

摘要： An initial entry processor (40) for use in a processing satellite (12) in a satellite based communications system (10) is provided having a buffer (62), a detection and timing circuit (64) and an identity circuit (66). The buffer (62) stores an initial entry burst (54) transmitted from at least one terrestrial terminal (14) to the processing satellite (12). The detection and timing circuit (64) detects the initial entry burst (54) and determines a time of arrival of the initial entry burst (54) relative to an initial entry burst slot (52). The identity circuit (66) determines an identity of the terrestrial terminal (14) that transmitted the initial entry burst (54) such that the time of arrival is used by the identified terrestrial terminal (14) during subsequent communications with the processing satellite(12).

摘要翻译： 提供了一种用于基于卫星的通信系统（10）中的处理卫星（12）中的初始入口处理器（40），其具有缓冲器（62），检测和定时电路（64）以及标识电路（66）。 缓冲器（62）存储从至少一个地面终端（14）发送到处理卫星（12）的初始入口突发（54）。 检测和定时电路（64）检测初始入口突发（54）并且确定初始入口突发（54）相对于初始入口突发时隙（52）的到达时间。 身份电路（66）确定发射初始入口突发（54）的地面终端（14）的身份，使得在与处理卫星（12）的后续通信期间由所识别的地面终端（14）使用到达时间 ）。

公开(公告)号：EP1176734A3

公开(公告)日：2003-11-05

申请号：EP01113537.3

申请日：2001-06-12

申请人： TRW Inc.

发明人： Kintis, Mark ,  Martin, Donald R. ,  Moretti, Vincent C.

IPC分类号： H04B7/005

CPC分类号： H04W52/42

摘要： A power control system for a multi-carrier base station transmitter is capable of controlling power levels of individual RF carriers. The power control system has a multi-channel conversion system for generating a plurality of analog reference signals corresponding to a plurality of digital input signals. The multi-channel conversion system also generates an analog multi-carrier signal and samples the multi-carrier signal. The multi-carrier signal represents a summed amplification of the digital input signals. A correlating power detection system is connected to the multi-channel conversion system and generates digital total power control signals based on the analog reference signals and the analog sampled multi-carrier signal. A feedback conversion module is connected to the multi-channel conversion system and the correlating power detection system and individually controls amplification of the digital input signals based on the total power control signals.

公开(公告)号：EP1168637A2

公开(公告)日：2002-01-02

申请号：EP01113566.2

申请日：2001-06-13

申请人： TRW Inc.

发明人： Claxton, Shimen K. ,  Oyama, Bert K. ,  Kintis, Mark ,  Smith, Andrew D. ,  Talbott, Craig R. ,  Martin, Donald R. ,  Skones, William M. ,  Moretti, Vincent C.

IPC分类号： H04B1/28

CPC分类号： H04B1/0007 ,  H04B1/0003 ,  H04B1/28

摘要： A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.

摘要翻译： 一种用于无线电信系统接收器（10）没有提供接收信号的相对的宽带信号处理，而不增加并因此多个接收到的信号可以同时处理的信号失真。 所述接收器（10）包括专门LNA（16），频率下转换器（18）和ADC（20），同时保持接收机的性能进行宽带信号的处理。 下转换器（18）的频率使用合适的混合器（28），BPA（32），衰减器（34）和变压器（36）没有被调谐的下转换和幅度控制在所需的宽带以提供所需的频率。 下变换器设备被选择取决于ADC（20）的特定性能标准。 一个专门的数字信道（22）被包括在所述接收器（10）没有接收来自ADC（20）数字信号，并且将该信号分离成多个信道。 在一个，实施例的下变频的情况下在单个降频转换处理，并且ADC（20）采用Δ-Σ处理以提供在整个频率带数字转换。 在一个替代实施例中，频率下转换以双降频转换过程，从而没有一个较不复杂的ADC（62）可用于执行。

公开(公告)号：EP1032155A2

公开(公告)日：2000-08-30

申请号：EP00103392.7

申请日：2000-02-24

申请人： TRW Inc.

发明人： Caso, Gregory S. ,  Moretti, Vincent C.

IPC分类号： H04L5/06

CPC分类号： H04L5/06

摘要： The invention is a digital channelizer and a process for dividing an input bandwidth into at least some of N channels. A digital channelizer which divides an input bandwidth into at least some of N channels in accordance with the invention includes a window presum (102), responsive to I input groups of data words, having I signal processing paths and outputting I groups of output data words, each input group of data words being processed in a different one of the I signal processing paths and individual channels of at least some of the N channels being decimated by a decimation factor of M; a cyclic shift (24'), coupled to the I output groups of data words, having I cyclic shift paths, each cyclic shift path being responsive to a different output group of data words to produce I output groups of data words, each cyclic shift path comprising a plurality of word shifting elements each responsive to a group of data words; and a discrete Fourier transform (26') coupled to the I output groups of cyclically shifted data words outputted from the cyclic shift, which performs a discrete Fourier transform on the I output groups of the cyclically shifted data words to produce at least some of the N channels; and wherein I equals GCD(N,M) and each output group of cyclically shifted data words is repeatedly shifted through a number of cycles equal to N/GCD(N,M) with each cycle having a shift value defined by mM*modulo N, or -mM*modulo N and m being an index variable ranging from zero upward to positive numbers.

摘要翻译： 本发明是数字信道化器和用于将输入带宽划分成N个信道中的至少一些信道的过程。 根据本发明，将输入带宽划分为至少一些N个信道的数字信道化器包括响应于I个输入的数据字组，具有I信号处理路径并输出I组输出数据字的窗口（102） 在I个信号处理路径中的不同一个处理的每个输入数据字组和至少一些N个通道的各个通道被抽取因子为M; 耦合到具有I个循环移位路径的I个输出数据字组的循环移位（24'），每个循环移位路径响应不同的数据字输出组以产生I个数据字组，每个循环移位 路径，其包括多个字移位元件，每个字移位元件响应于一组数据字; 以及耦合到从循环移位输出的循环移位数据字的I个输出组的离散傅里叶变换（26'），其对循环移位的数据字的I个输出组执行离散傅里叶变换，以产生至少一些 N个通道 并且其中I等于GCD（N，M），并且循环移位的数据字的每个输出组被重复地移动等于N / GCD（N，M）的周期数，每个周期具有由mM *模N定义的移位值 ，或-mM *模N和m是从零向上到正数的指数变量。

公开(公告)号：EP1089509A3

公开(公告)日：2002-09-11

申请号：EP00119386.1

申请日：2000-09-11

申请人： TRW Inc.

发明人： Carrozza, Dominic P. ,  Moretti, Vincent C. ,  Linsky, Stuart T. ,  Wright, David A. ,  Caso, Gregory S.

IPC分类号： H04L27/233 ,  H04L27/22 ,  H04L1/00 ,  H04J1/02 ,  H04B7/185

CPC分类号： H04L1/004 ,  H04B7/18515 ,  H04L27/22

摘要： An uplink demodulator system (44) for use in a processing satellite in a satellite based communications system (10) is provided with a first multiplexer (62), a second multiplexer (82), a multichannel preamble processor (66), and a multichannel phase tracker (68). The first multiplexer (62) is operable to receive channelized data from a plurality of channelization modes at a plurality of inputs and operable to route the channelized data to a first output. The multichannel preamble processor (66) is operable to determine a phase estimate for each channel of the channelized data. The multichannel phase tracker (68) is operable to receive the phase estimates from the multichannel preamble processor (66) and operable to track a phase for each channel of said channelized data to phase align each channel of said channelized data to corresponding uplink signals. The second multiplexer (82) is operable to multiplex and route heavy encoded channelized data and light encoded channelized data to a second output where the multiplex channelized data is phase aligned with the corresponding uplink signals.

摘要翻译： 在基于卫星的通信系统（10）中用于处理卫星的上行链路解调器系统（44）配备有第一多路复用器（62），第二多路复用器（82），多信道前同步码处理器（66）和多信道 相位跟踪器（68）。 第一多路复用器（62）可操作以在多个输入处接收来自多个信道化模式的信道化数据，并且可操作以将信道化数据路由到第一输出。 多信道前同步码处理器（66）可操作以确定信道化数据的每个信道的相位估计。 多信道相位跟踪器（68）可操作用于从多信道前导码处理器（66）接收相位估计，并且可操作用于跟踪所述信道化数据的每个信道的相位，以将所述信道化数据的每个信道相位对准到对应的上行链路信号。 第二多路复用器（82）可操作以将重编码的信道化数据和光编码的信道化数据多路复用并路由到第二输出，其中多路信道化数据与相应的上行信号相位对齐。

公开(公告)号：EP1176734A2

公开(公告)日：2002-01-30

申请号：EP01113537.3

申请日：2001-06-12

申请人： TRW Inc.

发明人： Kintis, Mark ,  Martin, Donald R. ,  Moretti, Vincent C.

IPC分类号： H04B7/005

CPC分类号： H04W52/42

摘要： A power control system for a multi-carrier base station transmitter is capable of controlling power levels of individual RF carriers. The power control system has a multi-channel conversion system for generating a plurality of analog reference signals corresponding to a plurality of digital input signals. The multi-channel conversion system also generates an analog multi-carrier signal and samples the multi-carrier signal. The multi-carrier signal represents a summed amplification of the digital input signals. A correlating power detection system is connected to the multi-channel conversion system and generates digital total power control signals based on the analog reference signals and the analog sampled multi-carrier signal. A feedback conversion module is connected to the multi-channel conversion system and the correlating power detection system and individually controls amplification of the digital input signals based on the total power control signals.

摘要翻译： 用于多载波基站发射机的功率控制系统能够控制各个RF载波的功率电平。 功率控制系统具有用于产生对应于多个数字输入信号的多个模拟参考信号的多通道转换系统。 多通道转换系统还产生模拟多载波信号并对多载波信号进行采样。 多载波信号表示数字输入信号的总和放大。 相关功率检测系统连接到多通道转换系统，并且基于模拟参考信号和模拟采样多载波信号产生数字总功率控制信号。 反馈转换模块连接到多通道转换系统和相关功率检测系统，并且基于总功率控制信号独立地控制数字输入信号的放大。

公开(公告)号：EP1089509A2

公开(公告)日：2001-04-04

申请号：EP00119386.1

申请日：2000-09-11

申请人： TRW Inc.

发明人： Carrozza, Dominic P. ,  Moretti, Vincent C. ,  Linsky, Stuart T. ,  Wright, David A. ,  Caso, Gregory S.

IPC分类号： H04L27/233 ,  H04L27/22 ,  H04L1/00 ,  H04J1/02

CPC分类号： H04L1/004 ,  H04B7/18515 ,  H04L27/22

摘要： An uplink demodulator system (44) for use in a processing satellite (12) in a satellite based communications system (10) is provided with a first multiplexer (62), a second multiplexer (82), a multichannel preamble processor (66), and a multichannel phase tracker (68). The first multiplexer (62) is operable to receive channelized data from a plurality of channelization modes at a plurality of inputs and operable to route the channelized data to a first output. The multichannel preamble processor (66) is operable to determine a phase estimate for each channel of the channelized data. The multichannel phase tracker (68) is operable to receive the phase estimates from the multichannel preamble processor (66) and operable to track a phase for each channel of said channelized data to phase align each channel of said channelized data to corresponding uplink signals. The second multiplexer (82) is operable to multiplex and route heavy encoded channelized data and light encoded channelized data to a second output where the multiplex channelized data is phase aligned with the corresponding uplink signals.

摘要翻译： 用于基于卫星的通信系统（10）中的处理卫星（12）的上行链路解调器系统（44）配备有第一多路复用器（62），第二多路复用器（82），多信道前同步码处理器（66） 和多通道相位跟踪器（68）。 第一多路复用器（62）可操作以在多个输入处接收来自多个信道化模式的信道化数据，并且可操作以将信道化数据路由到第一输出。 多信道前同步码处理器（66）可操作以确定信道化数据的每个信道的相位估计。 多信道相位跟踪器（68）可操作用于从多信道前导码处理器（66）接收相位估计，并且可操作用于跟踪所述信道化数据的每个信道的相位，以将所述信道化数据的每个信道相位对准到对应的上行链路信号。 第二多路复用器（82）可操作以将重编码的信道化数据和光编码的信道化数据多路复用并路由到第二输出，其中多路信道化数据与相应的上行信号相位对齐。