公开(公告)号：US07227906B2

公开(公告)日：2007-06-05

申请号：US10315993

申请日：2002-12-11

申请人： Atsushi Fukuda ,  Yasunori Suzuki ,  Noriyoshi Terada ,  Toshio Nojima

发明人： Atsushi Fukuda ,  Yasunori Suzuki ,  Noriyoshi Terada ,  Toshio Nojima

IPC分类号： H04L1/02

CPC分类号： H04B7/12 ,  H04B7/0613 ,  H04B7/0842 ,  H04L5/06

摘要： Different carrier frequencies are chosen for plural transmitters of a transmitting device and signals are transmitted at frequency bands overlapping each other. In the receiving device weighting coefficients are provided in input-to-output paths of an interchannel interference canceller 21 so that the cross correlation between output signals from the interchannel interference canceller is minimized.

摘要翻译： 为发射装置的多个发射机选择不同的载波频率，并且以彼此重叠的频带发射信号。 在接收设备中，加权系数被提供在通道间干扰消除器21的输入到输出路径中，使得来自通道间干扰消除器的输出信号之间的互相关被最小化。

公开(公告)号：US06320464B1

公开(公告)日：2001-11-20

申请号：US09538281

申请日：2000-03-30

申请人： Yasunori Suzuki ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Toshio Nojima

IPC分类号： H03F126

CPC分类号： H03F1/3229 ,  H03F1/0211 ,  H03F1/0261 ,  H03F1/0288 ,  H03F1/3235

摘要： In a distortion injection path (15) wherein a detected distortion component of a main amplifier (23) becomes amplified, distortion by an auxiliary amplifier (29a) is detected by an auxiliary distortion detector (42) composed of a variable attenuator (27a), a variable phase shifter (28a), a first auxiliary amplifier (29a), a delay line (36) and a phase inverter (37), and the detected distortion is cancelled by an auxiliary distortion canceller (43) composed of a variable attenuator (27b), a variable phase shifter (28a), a second auxiliary amplifier (29b) and a delay line (39), thereby increasing the efficiency of the amplifier.

摘要翻译： 在主放大器（23）的检测到的失真分量变得放大的失真注入路径（15）中，辅助放大器（29a）的失真由可变衰减器（27a）构成的辅助失真检测器（42）检测， 可变移相器（28a），第一辅助放大器（29a），延迟线（36）和相位逆变器（37），并且所检测的失真被辅助失真消除器（43）抵消，所述辅助失真消除器（43）由可变衰减器 27b），可变移相器（28a），第二辅助放大器（29b）和延迟线（39），从而提高放大器的效率。

公开(公告)号：US06208204B1

公开(公告)日：2001-03-27

申请号：US09460707

申请日：1999-12-14

申请人： Yasunori Suzuki ,  Toshio Nojima ,  Shoichi Narahashi

发明人： Yasunori Suzuki ,  Toshio Nojima ,  Shoichi Narahashi

IPC分类号： H03F366

CPC分类号： H03F1/3229

摘要： In the balance adjustment using a pilot signal in a distortion detector and a distortion canceller of a feed-forward amplifier for amplifying a CDMA transmission signal, a pilot code is spread by a long code different from that of the CDMA transmission signal to obtain the pilot signal. The pilot signal is converted to a signal of the transmission frequency band, and the converted signal is injected into the transmission signal at the input side of the amplifier. The pilot signal frequency band is detected from the output of an auxiliary amplifier of the distortion canceller and converted to the base band, thereafter being despread to detect the pilot signal (code).

摘要翻译： 在使用失真检测器中的导频信号的平衡调整和用于放大CDMA发送信号的前馈放大器的失真消除器的情况下，导频码以与CDMA发送信号不同的长码进行扩频，以获得导频 信号。 将导频信号转换为发送频带的信号，并将转换的信号注入放大器的输入侧的发送信号。 从失真消除器的辅助放大器的输出检测导频信号频带，并将其转换为基带，之后被解扩以检测导频信号（代码）。

公开(公告)号：US06392483B2

公开(公告)日：2002-05-21

申请号：US09854476

申请日：2001-05-15

申请人： Yasunori Suzuki ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Toshio Nojima

IPC分类号： H03F100

CPC分类号： H03F1/3252 ,  H03F1/3235 ,  H03F2201/3212 ,  H03F2201/3218

摘要： In a feed-forward amplifier a signal power dynamic range compressing circuit for compressing the power dynamic range of the input signal to the feed-forward amplifier is provided in a distortion detecting loop at the input side of a main amplifier, and the output backoff of the main amplifier is reduced to thereby achieve high-efficiency amplification of the feed-forward amplifier.

摘要翻译： 在前馈放大器中，在主放大器的输入侧的失真检测环路中提供用于将输入信号的功率动态范围压缩到前馈放大器的信号功率动态范围压缩电路，并且输出退避 主放大器减少，从而实现前馈放大器的高效率放大。

公开(公告)号：US07072409B2

公开(公告)日：2006-07-04

申请号：US09861717

申请日：2001-05-22

申请人： Yasunori Suzuki ,  Tetsuo Hirota ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Tetsuo Hirota ,  Toshio Nojima

IPC分类号： H04L27/00

CPC分类号： H04B7/0854

摘要： A radio communication system is comprised of: a transmitting system in which N transmission signals, frequency-converted to the same transmission frequency, are generated by N transmitters, N being an integer equal to or greater than 2, and the transmission signals are each applied to each one of N elements of an antenna for transmission; and a receiving system in which each transmitted signal is received by N-element antenna and the cross correlation coefficient between the transmitted signals received by the N-elements is minimized to thereby reconstruct each transmitted signal. The plural transmitted signals of the same frequency are received and the cross correlation coefficients of the received transmitted signals are minimized to thereby permit multiplexing of the transmission signal.

公开(公告)号：US06838934B2

公开(公告)日：2005-01-04

申请号：US10287681

申请日：2002-11-05

申请人： Yasunori Suzuki ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Toshio Nojima

IPC分类号： H03F1/32 ,  H03F3/66 ,  H03F1/26

CPC分类号： H03F1/3235 ,  H03F2201/3218

摘要： In a feedforward amplifier with a dual loop in which a distortion injection path of a distortion elimination circuit 50 is provided as a feedforward configuration composed of a first auxiliary amplifier distortion elimination circuit 60 and a first auxiliary amplifier distortion elimination circuit, a second variable attenuator 55 and a second variable phase shifter 56 are provided preceding the distortion detection circuit 60, a second pilot signal injected between stages of a main amplifier 14 is detected by a directional coupler 85, and the second variable attenuator 55 and the second variable phase shifter 56 are controlled by a second controller 97 to minimize the level of the detected second pilot signal, thereby bringing the distortion elimination circuit and the first auxiliary distortion detection circuit into balance at the same time.

摘要翻译： 在具有双回路的前馈放大器中，其中提供失真消除电路50的失真注入路径作为由第一辅助放大器失真电路60和第一辅助放大器失真电路组成的前馈配置，第二可变衰减器55 并且在失真检测电路60之前提供第二可变移相器56，通过定向耦合器85检测在主放大器14的级之间注入的第二导频信号，并且第二可变衰减器55和第二可变移相器56是 由第二控制器97控制，以使检测到的第二导频信号的电平最小化，从而使失真消除电路和第一辅助失真检测电路同时平衡。

公开(公告)号：US06515544B1

公开(公告)日：2003-02-04

申请号：US09850733

申请日：2001-05-17

申请人： Yasunori Suzuki ,  Tetsuo Hirota ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Tetsuo Hirota ,  Toshio Nojima

IPC分类号： H03F100

CPC分类号： H03F3/24 ,  H01Q3/26 ,  H01Q3/40 ,  H03F1/3235 ,  H03F3/211 ,  H03F3/602 ,  H04B1/00 ,  H04B1/04

摘要： A feed-forward amplifier configuration 40n having a distortion detector circuit and a distortion canceller circuit is formed between an input port Ipn and an output port OPn of a multi-terminal power-combining power amplifier with a main amplifier 4M provided for each channel between an input-side multi-terminal power combiner 3 and an output-side multi-terminal power combiner 5.

摘要翻译： 具有失真检测器电路和失真消除电路的前馈放大器配置40n形成在多端子功率合成功率放大器的输入端口Ipn和输出端口OPn之间，其具有为每个通道设置的主放大器4M 输入侧多端子功率合成器3和输出侧多端子功率合成器5。

公开(公告)号：US06178158B1

公开(公告)日：2001-01-23

申请号：US08948090

申请日：1997-10-09

申请人： Yasunori Suzuki ,  Ken Kumagai ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Ken Kumagai ,  Toshio Nojima

IPC分类号： H04J306

CPC分类号： H04L27/2614 ,  H04L27/2602

摘要： In a method for transmission and reception over N transmission channels, the transmitting side performs orthonormal transform processing of N-channel modulated signals so that the resulting transformed output signals have lower cross-correlation, and the transformed N-channel signals are multiplexed and transmitted over the N-channels. At the receiving side, the N-channel received signals are subjected to inverse orthonormal transform processing to obtain N-channel modulated signals, which are demodulated to obtain a digital signal.

摘要翻译： 在通过N个传输信道进行发送和接收的方法中，发送侧进行N信道调制信号的正交变换处理，使得所得到的变换后的输出信号具有较低的互相关，并且变换的N信道信号被复用并传输 N通道。 在接收侧，对N信道接收信号进行逆正交变换处理，以获得被解调以获得数字信号的N信道调制信号。

公开(公告)号：US07013087B2

公开(公告)日：2006-03-14

申请号：US09983705

申请日：2001-10-25

申请人： Yasunori Suzuki ,  Ning Chen ,  Yoshiaki Tarusawa ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Ning Chen ,  Yoshiaki Tarusawa ,  Toshio Nojima

IPC分类号： H04B10/00 ,  H04B10/24 ,  H04B7/00 ,  H04J14/00

CPC分类号： H04B10/25755

摘要： A divider/combiner unit combines RF signals, then converts the combined signal into an optical signal and sends it over an optical fiber. N radio access units each convert the optical signal received from the optical fiber into an RF signal and transmits it from an antenna, and each radio access unit converts an RF signal received by the antenna into an optical signal and sends it over an optical fiber to the divider/combiner unit. The divider/combiner unit converts the received optical signal into RF signals and outputs them. This system is operated as plurality of communication systems in common to them in correspondence to a plurality of input/output terminals of the divider/combiner unit.

公开(公告)号：US06621367B2

公开(公告)日：2003-09-16

申请号：US09749807

申请日：2000-12-28

申请人： Yasunori Suzuki ,  Motoyuki Uchida ,  Toshio Nojima

发明人： Yasunori Suzuki ,  Motoyuki Uchida ,  Toshio Nojima

IPC分类号： H04B164

CPC分类号： H04L27/2626 ,  H04L27/2621

摘要： In an input signal power dynamic range compressing circuit, an input signal is distributed by a directional coupler to a linear signal transfer path and a compressing signal generating path, and in the compressing signal generating path a compressing signal, which keeps the peak-to-average-power ratio of the input signal below a predetermined value, is generated from the input signal. The compressing signal is combined by a power combiner with the input signal having passed through the linear signal transfer path.

摘要翻译： 在输入信号功率动态范围压缩电路中，输入信号由定向耦合器分配到线性信号传送路径和压缩信号产生路径，并且在压缩信号产生路径中压缩信号保持峰 - 从输入信号生成低于预定值的输入信号的平均功率比。 压缩信号由功率组合器与已经通过线性信号传送路径的输入信号组合。