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    • 1. 发明授权
    • Wireless telecommunications multi-carrier receiver architecture
    • 无线电信多载波接收机架构
    • US06813320B1
    • 2004-11-02
    • US09605078
    • 2000-06-28
    • Shimen K. ClaxtonBert K. OyamaEric L. UptonBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesRonald P. SmithVincent C. Moretti
    • Shimen K. ClaxtonBert K. OyamaEric L. UptonBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesRonald P. SmithVincent C. Moretti
    • H03K900
    • H04B1/28H03D7/163
    • 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.
    • 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),以在维持接收机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)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,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)。
    • 2. 发明授权
    • Receiver including low noise amplifier and frequency down-converter for a wireless telecommunication system
    • 接收机包括无线电信系统的低噪声放大器和频率下变频器
    • US06735421B1
    • 2004-05-11
    • US09605209
    • 2000-06-28
    • Shimen K. ClaxtonBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • Shimen K. ClaxtonBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • H04B168
    • H04B1/0007H04B1/0003H04B1/28
    • 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.
    • 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),以在维持接收机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)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,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)。
    • 3. 发明授权
    • Multi-carrier receiver for a wireless telecommunication system
    • 用于无线电信系统的多载波接收机
    • US06631255B1
    • 2003-10-07
    • US09605481
    • 2000-06-28
    • Shimen K. ClaxtonBert K. OyamaBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • Shimen K. ClaxtonBert K. OyamaBarry R. AllenMark KintisAndrew D. SmithCraig R. TalbottDavid J. BrunoneDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • H04B118
    • H04B1/0007H03D7/163H04B1/0003H04B1/0028H04B1/0032H04B1/28
    • 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.
    • 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),以在维持接收机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)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,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)。
    • 4. 发明授权
    • Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system
    • 接收机包括用于无线电信系统的降频转换器和模数转换器
    • US06804308B1
    • 2004-10-12
    • US09605465
    • 2000-06-28
    • Shimen K. ClaxtonBert K. OyamaMark KintisAndrew D. SmithCraig R. TalbottDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • Shimen K. ClaxtonBert K. OyamaMark KintisAndrew D. SmithCraig R. TalbottDonald R. MartinWilliam M. SkonesVincent C. Moretti
    • H03K900
    • H04B1/0007H04B1/0003H04B1/28
    • 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.
    • 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),以在维持接收机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)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,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)。
    • 6. 发明授权
    • Architecture for multi-carrier receiver
    • 多载波接收机的架构
    • US06798848B1
    • 2004-09-28
    • US09605947
    • 2000-06-28
    • Shimen K. ClaxtonBert K. OyamaMark KintisAndrew D. SmithCraig R. TalbottDonald R. MartinWilliam M. SkonesRonald P. SmithVincent C. Moretti
    • Shimen K. ClaxtonBert K. OyamaMark KintisAndrew D. SmithCraig R. TalbottDonald R. MartinWilliam M. SkonesRonald P. SmithVincent C. Moretti
    • H03K900
    • H03F3/45085H03D7/163H03F3/1935H03F2200/198H03F2200/294H03F2200/331H03F2200/372H03F2203/45326H04B1/0003H04B1/0007H04B1/0028H04B1/0032H04B1/28H04L5/06
    • 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.
    • 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),以在维持接收机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)选择下转换器器件。 在接收器(10)中包括一个专门的数字信道化器(22),其接收来自ADC(20)的数字信号,并将信号分离成多个信道。 在一个实施例中,在单个下变频处理中执行降频转换,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)。
    • 7. 发明授权
    • Analog power control system for a multi-carrier transmitter
    • 用于多载波发射机的模拟功率控制系统
    • US06662018B1
    • 2003-12-09
    • US09605022
    • 2000-06-28
    • Mark KintisDonald R. MartinVincent C. Moretti
    • Mark KintisDonald R. MartinVincent C. Moretti
    • H04B700
    • H03G3/3042
    • 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 amplification system for converting a plurality of analog input signals into a plurality of amplified carrier signals. The amplification system also generates a plurality of reference signals corresponding to the amplified carrier signals. Furthermore, the amplification system generates a multi-carrier signal, where the multi-carrier signal includes a summation of the amplified carrier signals. A correlating power detection system is connected to the amplification system, where the correlating power detection system generates total power control signals based on the reference signals and the multi-carrier signal. The power control system also has an adjustment module connected to the amplification system and the power detection system, where the adjustment module controls amplification of the carrier signals based on the total power control signals. Sampling the amplified signals to obtain reference signals, and using these reference signals for control purposes allows greater power control than available under conventional approaches.
    • 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将多个模拟输入信号转换成多个放大载波信号的多通道放大系统。 放大系统还产生对应于放大的载波信号的多个参考信号。 此外,放大系统产生多载波信号,其中多载波信号包括放大载波信号的总和。 相关功率检测系统连接到放大系统,其中相关功率检测系统基于参考信号和多载波信号产生总功率控制信号。 功率控制系统还具有连接到放大系统和功率检测系统的调节模块,其中调节模块基于总功率控制信号来控制载波信号的放大。 对放大的信号采样以获得参考信号,并且为了控制目的使用这些参考信号可以实现比常规方法下更大的功率控制。
    • 8. 发明授权
    • Digital power control system for a multi-carrier transmitter
    • 用于多载波发射机的数字功率控制系统
    • US06535720B1
    • 2003-03-18
    • US09605899
    • 2000-06-28
    • Mark KintisDonald R. MartinVincent C. Moretti
    • Mark KintisDonald R. MartinVincent C. Moretti
    • H04B1700
    • H04W52/42
    • 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.
    • 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相加放大。 相关功率检测系统连接到多通道转换系统,并基于模拟参考信号和模拟采样多载波信号生成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,并基于总功率控制信号单独控制数字输入信号的放大。
    • 10. 发明授权
    • Synchronization burst processor for a processing satellite
    • 用于处理卫星的同步突发处理器
    • US06434361B1
    • 2002-08-13
    • US09408261
    • 1999-09-29
    • Dominic P. CarrozzaVincent C. MorettiDavid A. WrightGregory S. Caso
    • Dominic P. CarrozzaVincent C. MorettiDavid A. WrightGregory S. Caso
    • H04B7185
    • H04L7/042H04B7/2125
    • A synchronization burst processor (56) used in a processing satellite (12) in a satellite based communications system (10) is provided with a sync burst memory (72), a first double correlator (74), a second double correlator (76) and a modulus module (78). The sync burst memory (72) stores at least one sync burst (52) transmitted from a terrestrial terminal (14) to the processing satellite (12) where the sync burst (52) is formed from a quadrature pair sample set {p, q}. The first double correlator (74) performs an early correlation and a late correlation of the p samples relative to a sync burst slot (50) to generate an early correlation Pe and a late correlation Pl. The second double correlator (76) performs an early correlation and a late correlation of the q samples relative to the sync burst slot (50) to generate an early correlation Qe and a late correlation Ql. The modulus module (78) determines an early modulus Re and a late modulus Rl from the early correlations Pe and Qe and from the late correlations Pl and Ql. The early modulus Re and the late modulus Rl are used to determine if the sync burst (52) is present in the sync burst slot (50) and if the sync burst (52) is early or late relative to the sync burst slot (50).
    • 在基于卫星的通信系统(10)中的处理卫星(12)中使用的同步突发处理器(56)具有同步脉冲串存储器(72),第一双相关器(74),第二双相关器(76) 和模数模块(78)。 同步突发存储器(72)存储从地面终端(14)发送到处理卫星(12)的至少一个同步脉冲串(52),其中同步脉冲串(52)由正交对采样集{p,q }。 第一双相关器(74)执行相对于同步突发时隙(50)的p个样本的早期相关和后期相关,以产生早期相关Pe和晚期相关性P1。 第二双相关器(76)执行相对于同步脉冲串时隙(50)的q个样本的早期相关和晚期相关,以产生早期相关Qe和晚期相关Q1。 模量模块(78)从早期相关性Pe和Qe以及从晚期相关性P1和Q1确定早期模量Re和后期模量R1。 早期模数Re和延迟模数R1用于确定同步脉冲串(52)是否存在于同步脉冲串时隙(50)中,并且如果同步脉冲串(52)相对于同步脉冲串时隙(50)早或晚 )。