-
公开(公告)号：US6029056A
公开(公告)日：2000-02-22
申请号：US962054
申请日：1997-10-31
CPC分类号： H04B7/084 , H01Q3/26 , H04B7/0851 , H04B7/0865
摘要： A space diversity receiver apparatus receives signals by two spatially separated antennas, controls the phase of the signal received by one of the antennas by a phase control circuit, combines the phase-controlled signal and the signal received by the other antenna by a combiner and outputs the combined signal. A digital detector digitally detects the center frequency level and the levels on high- and low-frequency sides of the center frequency of the combined signal. Phase is controlled in such a manner that the center frequency level will coincide with a set level and a deviation between the levels on the high- and low-frequency sides of the center frequency will become zero.
摘要翻译： 空间分集接收机装置通过两个空间分离的天线接收信号，通过相位控制电路控制由天线之一接收到的信号的相位，将相位控制信号和由另一个天线接收的信号组合在一起，并输出 组合信号。 数字检测器以组合信号的中心频率的高频和低频侧数字检测中心频率电平和电平。 相位被控制为使得中心频率电平与设定电平一致，并且中心频率的高频和低频侧的电平之间的偏差将变为零。
-
公开(公告)号：US5867542A
公开(公告)日：1999-02-02
申请号：US552543
申请日：1995-11-03
CPC分类号： H04L27/38 , H04L7/0037 , H04L7/0054 , H04L7/0334 , H04L7/0029 , H04L7/027
摘要： The present invention relates to a clock phase detecting circuit and a clock regenerating circuit each arranged in a receiving unit of multiplex radio equipment. The receiving unit of the multiplex radio equipment includes an identifying circuit for identifying a signal obtained by demodulating a multilevel orthogonal modulation signal; a clock regenerating circuit for regenerating a signal identification clock for the identifying circuit to supply the clock to the identifying circuit; an equalizing circuit for subjecting the signal obtained by demodulating a multilevel orthogonal modulation signal to an equalizing process. A clock phase detecting unit detects the phase component of the signal identification clock based on signals input to or output from the equalizing circuit and then supplies the phase component to the clock regenerating circuit. The phase component of a signal identification clock can be certainly detected and accurately adjusted so that the signal identification clock can be regenerated with high accuracy.
-
公开(公告)号：US6028902A
公开(公告)日：2000-02-22
申请号：US828419
申请日：1997-03-28
CPC分类号： H04L7/0054 , H04L7/0062
摘要： A clock phase detecting circuit is provided which is arranged in a receiving section of a multiplex radio apparatus. Difference detecting unit detects the difference between input and output signals to and from an equalizing circuit, and squaring unit squares the detected difference. The squared value thus obtained shows a minimum value when the phase of a clock signal output from a clock regenerating circuit coincides with a normal position of signal point. Therefore, phase adjusting unit outputs a control signal to the clock regenerating circuit while monitoring the squared value, to adjust the phase of the clock signal output from the clock regenerating circuit so that the squared value output from the squaring unit may be minimized.
摘要翻译： 提供了一种布置在多路复用无线电设备的接收部分中的时钟相位检测电路。 差分检测单元检测来自均衡电路的输入和输出信号之间的差异，平方单元对检测到的差异进行平方。 由此获得的平方值表示从时钟再生电路输出的时钟信号的相位与信号点的正常位置一致的最小值。 因此，相位调整单元在监视平方值的同时向时钟再生电路输出控制信号，调整从时钟再生电路输出的时钟信号的相位，使从平方单元输出的平方值最小化。
-
公开(公告)号：US5978415A
公开(公告)日：1999-11-02
申请号：US533119
申请日：1995-09-25
CPC分类号： H04L27/01
摘要： The invention provides an automatic amplitude equalizer for compensating an amplitude characteristic of an input signal, wherein a control signal for equalizing an inclination amplitude distortion of an input signal is detected making use of a pair of digital demodulated signals to compensate for the amplitude characteristic of the input signal with a high degree of accuracy and which can be constructed with a reduced circuit scale and at a reduce cost. The automatic amplitude equalizer includes a first-order inclination amplitude equalization section for compensating for an amplitude characteristic of an input signal in accordance with a first-order inclination amplitude characteristic, and a control section for discriminating a direction of variation of a value of a first one of a pair of digital demodulated signals originating from the input signal, detecting error information from the other, second one of the digital demodulated signals which is orthogonal to the first signal, and outputting a control signal for the first-order inclination amplitude equalization section based on a correlation between the error information and the direction of variation of the value of the first signal.
摘要翻译： 本发明提供一种自动幅度均衡器，用于补偿输入信号的幅度特性，其中使用一对数字解调信号来检测用于均衡输入信号的倾斜幅度失真的控制信号，以补偿输入信号的振幅特性 输入信号具有高精确度，并且可以以降低的电路规模和降低成本来构造。 自动幅度均衡器包括：一阶倾斜幅度均衡部分，用于根据一阶倾斜幅度特性补偿输入信号的幅度特性;以及控制部分，用于鉴别第一 从输入信号产生的一对数字解调信号中的一个，从与第一信号正交的数字解调信号中的另一个第二数字解调信号检测出错误信息，并输出一阶倾斜幅度均衡部分的控制信号 基于误差信息与第一信号的值的变化方向之间的相关性。
-
5.再颁专利Clock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipment 有权时钟相位检测电路和时钟再生电路，各自布置在多路复用无线电设备的接收单元中公开(公告)号：USRE40695E1
公开(公告)日：2009-04-07
申请号：US09771229
申请日：2001-01-26
CPC分类号： H04L27/38 , H04L7/0029 , H04L7/0037 , H04L7/0054 , H04L7/027 , H04L7/0334
摘要： The present invention relates to a clock phase detecting circuit and a clock regenerating circuit each arranged in a receiving unit of multiplex radio equipment. The receiving unit of the multiplex radio equipment includes an identifying circuit for identifying a signal obtained by demodulating a multilevel orthogonal modulation signal; a clock regenerating circuit for regenerating a signal identification clock for the identifying circuit to supply the clock to the identifying circuit; an equalizing circuit for subjecting the signal obtained by demodulating a multilevel orthogonal modulation signal to an equalizing process. A clock phase detecting unit detects the phase component of the signal identification clock based on signals input to or output from the equalizing circuit and then supplies the phase component to the clock regenerating circuit. The phase component of a signal identification clock can be certainly detected and accurately adjusted so that the signal identification clock can be regenerated with high accuracy.
摘要翻译： 时钟相位检测电路和时钟再生电路技术领域本发明涉及一种时钟相位检测电路和时钟再生电路，每个时钟相位检测电路和时钟再生 复用无线电设备的接收单元包括识别电路，用于识别通过解调多电平正交调制信号而获得的信号; 时钟再生电路，用于再生用于识别电路的信号识别时钟，以将时钟提供给识别电路; 均衡电路，用于对通过解调多级正交调制信号获得的信号进行均衡处理。 时钟相位检测单元基于输入到均衡电路或从均衡电路输出的信号来检测信号识别时钟的相位分量，然后将相位分量提供给时钟再生电路。 信号识别时钟的相位分量可以被可靠地检测和精确地调整，从而可以高精度地再现信号识别时钟。
-
公开(公告)号：US5594389A
公开(公告)日：1997-01-14
申请号：US565732
申请日：1995-11-30
IPC分类号： H03L7/10 , H03L7/085 , H03L7/087 , H04L27/227 , H04L27/38
CPC分类号： H03L7/085 , H03L7/087 , H04L27/3836
摘要： A carrier regeneration circuit achieves quick frequency synchronization without using a sweeper. An area judging device judges whether a baseband signal, quadrature-demodulated with a regenerated carrier output from a voltage-controlled oscillator, lies inside a designated area in a phase plane. If it is inside the designated area, an output of a phase comparator is selected, and if it has exited the area, the previous value is held. The designated area is set so that the direction of control indicated by the phase comparator, just before the baseband signal rotating in the phase plane exits the area, coincides with a direction that suppresses the rotation.
摘要翻译： 载波再生电路可实现快速频率同步而不使用扫频器。 区域判断装置判断从压控振荡器输出的再生载波正交解调的基带信号是否位于相平面内的指定区域内。 如果在指定区域内，则选择相位比较器的输出，如果已经退出该区域，则保持以前的值。 指定区域被设定为使得相位比较器指示的控制方向恰好在相平面中的基带信号旋转离开该区域之前与抑制旋转的方向一致。
-
7.发明授权Method and system for CPRI cascading in distributed radio head architectures 有权分布式无线电头架构中CPRI级联的方法和系统公开(公告)号：US08467823B2
公开(公告)日：2013-06-18
申请号：US12731052
申请日：2010-03-24
CPC分类号： H04W36/18 , H04W88/085
摘要： A method of communicating between a base band unit and a plurality of remote radio heads includes the steps of receiving a first signal through an antenna in a first remote radio head, transmitting the first signal to a second remote radio head through a digital radio interface, receiving a second signal through an antenna in the second remote radio head, compensating for a delay accrued in the first signal, adding the first signal and the second signal to obtain a resulting signal, and transmitting the resulting signal to a base band unit through a digital radio interface.
摘要翻译： 在基带单元与多个远程无线电头之间通信的方法包括以下步骤：通过第一远程无线电头中的天线接收第一信号，通过数字无线电接口将第一信号发送到第二远程无线电头， 通过所述第二远程无线电头中的天线接收第二信号，补偿在所述第一信号中累积的延迟，将所述第一信号和所述第二信号相加以获得结果信号，并将所得到的信号通过 数字无线电接口。
-
8.发明申请METHOD AND SYSTEM FOR CPRI CASCADING IN DISTRIBUTED RADIO HEAD ARCHITECTURES 有权在分布式无线电头架构中进行CPRI分析的方法和系统公开(公告)号：US20110237178A1
公开(公告)日：2011-09-29
申请号：US12731052
申请日：2010-03-24
IPC分类号： H04H20/71
CPC分类号： H04W36/18 , H04W88/085
摘要： A method of communicating between a base band unit and a plurality of remote radio heads includes the steps of receiving a first signal through an antenna in a first remote radio head, transmitting the first signal to a second remote radio head through a digital radio interface, receiving a second signal through an antenna in the second remote radio head, compensating for a delay accrued in the first signal, adding the first signal and the second signal to obtain a resulting signal, and transmitting the resulting signal to a base band unit through a digital radio interface.
摘要翻译： 在基带单元与多个远程无线电头之间通信的方法包括以下步骤：通过第一远程无线电头中的天线接收第一信号，通过数字无线电接口将第一信号发送到第二远程无线电头， 通过所述第二远程无线电头中的天线接收第二信号，补偿在所述第一信号中累积的延迟，将所述第一信号和所述第二信号相加以获得结果信号，并将所得到的信号通过 数字无线电接口。
-
公开(公告)号：US06792255B2
公开(公告)日：2004-09-14
申请号：US09768679
申请日：2001-01-24
申请人： Yasuhiro Shibuya , Koji Hirai , Hiroyuki Kiyanagi
发明人： Yasuhiro Shibuya , Koji Hirai , Hiroyuki Kiyanagi
IPC分类号： H04B106
CPC分类号： H03G3/3036 , H04W52/34
摘要： A wireless communication apparatus according to the present invention is composed of a first section for carrying out wireless communication with a multichannel signal and a second section having a plurality of channel units each process a predetermined frequency signal as a channel signal. The wireless communication apparatus is arranged to have a plurality of variable attenuators each provided for corresponding one of the channel signals received from each channel unit of the second section, a combiner for combining outputs from the respective variable attenuators together and outputting the resultant combined signal to the first section, and a control unit for controlling the degree of attenuation of the individual variable attenuators according to the variation of the number of the channel signals. According to the arrangement, the wireless communication apparatus can not only communicate with an opponent station by transmitting a multichannel signal but also effectively suppress negative influence on existing channel even if a new channel unit is additionally provided.
摘要翻译： 根据本发明的无线通信装置由用于执行与多信道信号的无线通信的第一部分和具有多个信道单元的第二部分组成，每个信道单元各自处理预定的频率信号作为信道信号。 无线通信装置被配置为具有多个可变衰减器，每个可变衰减器被设置用于从第二部分的每个信道单元接收的相应一个信道信号，组合器，用于将来自各个可变衰减器的输出组合在一起，并将所得到的组合信号输出到 第一部分和控制单元，用于根据信道信号的数量的变化来控制各个可变衰减器的衰减程度。 根据该结构，无线通信装置不仅能够通过发送多信道信号与对手站进行通信，而且即使附加地提供新的信道单元，也可以有效地抑制对现有信道的负面影响。
-
公开(公告)号：US06871053B2
公开(公告)日：2005-03-22
申请号：US09768679
申请日：2001-01-24
申请人： Yasuhiro Shibuya , Koji Hirai , Hiroyuki Kiyanagi
发明人： Yasuhiro Shibuya , Koji Hirai , Hiroyuki Kiyanagi
IPC分类号： H03G3/30 , H04B1/40 , H04B7/005 , H04B7/208 , H04B7/26 , H04W52/04 , H04W52/34 , H04W72/04 , H04W84/08 , H04B1/06
CPC分类号： H03G3/3036 , H04W52/34
摘要： A wireless communication apparatus according to the present invention is composed of a first section for carrying out wireless communication with a multichannel signal and a second section having a plurality of channel units each process a predetermined frequency signal as a channel signal. The wireless communication apparatus is arranged to have a plurality of variable attenuators each provided for corresponding one of the channel signals received from each channel unit of the second section, a combiner for combining outputs from the respective variable attenuators together and outputting the resultant combined signal to the first section, and a control unit for controlling the degree of attenuation of the individual variable attenuators according to the variation of the number of the channel signals. According to the arrangement, the wireless communication apparatus can not only communicate with an opponent station by transmitting a multichannel signal but also effectively suppress negative influence on existing channel even if a new channel unit is additionally provided.
摘要翻译： 根据本发明的无线通信装置由用于执行与多信道信号的无线通信的第一部分和具有多个信道单元的第二部分组成，每个信道单元各自处理预定的频率信号作为信道信号。 无线通信装置被配置为具有多个可变衰减器，每个可变衰减器被设置用于从第二部分的每个信道单元接收的相应一个信道信号，组合器，用于将来自各个可变衰减器的输出组合在一起，并将所得到的组合信号输出到 第一部分和控制单元，用于根据信道信号的数量的变化来控制各个可变衰减器的衰减程度。 根据该结构，无线通信装置不仅能够通过发送多信道信号与对手站进行通信，而且即使附加地提供新的信道单元，也可以有效地抑制对现有信道的负面影响。
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.017 秒)