专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US06198731B1 Radiocommunication apparatus, and radiocommunication system 失效
标题翻译：无线电通信装置和无线电通信系统
公开(公告)号：US06198731B1
公开(公告)日：2001-03-06
申请号：US08995252
申请日：1997-12-19
申请人： Hajime Hamada , Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Yoshihiko Asano
发明人： Hajime Hamada , Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Yoshihiko Asano
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B7/2628
摘要： There are disclosed a radiocommunication apparatus and a radiocommunication system. There are provided a receiving section capable of receiving a plurality of types of signals which have been spread through use of different spread code information according to a CDMA scheme in a transmitting-side radiocommunication apparatuses; and a spread demodulation section which carries out despread processing for the common signal portions of the plurality of types of signals received by the receiving section through use of a composite spread code formed from a plurality of spread codes. Accordingly, it becomes possible to significantly improve the quality of received signals.
摘要翻译：公开了一种无线电通信装置和无线电通信系统。提供了一种能够在发送侧无线电通信装置中接收根据CDMA方案通过使用不同扩展码信息而扩展的多种类型的信号的接收部分; 以及扩展解调部分，通过使用由多个扩展码形成的复合扩展码，对由接收部分接收的多种类型的信号的公共信号部分进行解扩处理。因此，可以显着提高接收信号的质量。

52. 发明授权

US07224720B2 Correlator and delay lock loop circuit 失效
标题翻译：相关器和延迟锁环电路
公开(公告)号：US07224720B2
公开(公告)日：2007-05-29
申请号：US10625337
申请日：2003-07-22
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04B1/69 , H03D3/24
CPC分类号： H04B1/7075 , H04B1/7085 , H04B1/709 , H04B1/7095 , H04B2201/70707
摘要： The present invention reduces the scale of circuitry and shortens the code phase detection time needed to achieve initial synchronization. In a correlator for calculating correlation between a received spreading code contained in a received spread-spectrum signal and a reference spreading code, a combined code generator is included. The combined code generator outputs a combined spreading code by weighting and combining a plurality of phase-shifted reference spreading codes A1–AM. Further, an arithmetic circuit calculates correlation between the received spreading code and the plurality of phase-shifted reference spreading codes simultaneously. A phase detection circuit detects the phase difference between the received spreading code and a reference spreading code, namely the phase of the received spreading code from the results of the arithmetic operation.
摘要翻译：本发明减小了电路规模，缩短了实现初始同步所需的码相位检测时间。在用于计算包含在接收扩展频谱信号中的接收扩展码与参考扩展码之间的相关性的相关器中，包括组合码发生器。组合代码生成器通过加权和组合多个相移参考扩展码A 1 -M M来输出组合的扩展码。此外，算术电路同时计算接收的扩展码与多个相移参考扩展码之间的相关性。相位检测电路从算术运算结果检测接收到的扩展码与参考扩展码之间的相位差，即接收到的扩展码的相位。

53. 发明授权

US06563859B1 Receiver and receiving method in multi-carrier spread-spectrum communications 失效
标题翻译：多载波扩频通信中的接收和接收方法
公开(公告)号：US06563859B1
公开(公告)日：2003-05-13
申请号：US09440341
申请日：1999-11-15
申请人： Yasuyuki Oishi , Michiharu Nakamura , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Michiharu Nakamura , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04B1707
CPC分类号： H04B1/7115 , H04B1/692 , H04L5/026 , H04L27/2647
摘要： A multi-carrier signal received by an antenna is converted into a signal of an IF band by an RX, and converted into an I signal and a Q signal by an quadrature detector. The I signal and the Q signal as multi-carrier signals are converted into digital signals by an A/D converter, and input to complex filters. The complex filters extract a complex signal having a specified carrier. Then, complex filters shift the center frequency of the extracted complex signal into 0 Hz. The obtained base band signal is input to a finger, and despread and demodulated. The despread and demodulated signal is RAKE synthesized by a synthesis unit, and transmitted to a signal discrimination unit.
摘要翻译：由天线接收的多载波信号通过RX被转换为IF频带的信号，并由正交检波器转换为I信号和Q信号。作为多载波信号的I信号和Q信号由A / D转换器转换成数字信号，并输入到复数滤波器。复数滤波器提取具有指定载波的复信号。然后，复数滤波器将提取的复信号的中心频率移动到0Hz。所获得的基带信号被输入到手指，并被解扩和解调。解扩信号由合成单元RAKE合成，发送到信号鉴别单元。

54. 发明授权

US6009090A Code multiplexing wireless apparatus 失效
标题翻译：码复用无线装置
公开(公告)号：US6009090A
公开(公告)日：1999-12-28
申请号：US872362
申请日：1997-06-10
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04J11/00 , H04B1/707 , H04J13/00 , H04B7/216 , H04B15/00
CPC分类号： H04B1/707 , H04B2201/70706
摘要： A code multiplexing wireless apparatus for amplifying a code-multiplexed signal and then transmitting the amplified signal includes the following to reduce output back-off, improve the efficiency of a power amplifier and suppress broadening of the frequency spectrum: (1) a code-multiplexed signal generator for multiplying each item of transmission data by a spreading code sequence and combining spread-spectrum modulated signals to generate a code-multiplexed signal, (2) a signal-peak suppressing unit for holding the envelope of the code-multiplexed signal below a set level, and (3) a power amplifier for amplifying the code-multiplexed signal and transmitting the amplified code-multiplexed signal from an antenna.
摘要翻译：用于放大代码多路复用信号然后发送放大信号的代码复用无线装置包括以下以减少输出回退，提高功率放大器的效率并抑制频谱的扩展：（1）码复用信号发生器，用于将每个发送数据项乘以扩展码序列，并组合扩频调制信号以产生码复用信号;（2）信号峰值抑制单元，用于将码复用信号的包络保持在低于设置电平，以及（3）功率放大器，用于放大代码复用信号并从天线发送放大的码复用信号。

55. 发明授权

US06650689B1 Correlator and delay lock loop circuit 失效
标题翻译：相关器和延迟锁环电路
公开(公告)号：US06650689B1
公开(公告)日：2003-11-18
申请号：US09318446
申请日：1999-05-25
申请人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
发明人： Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04B1500
CPC分类号： H04B1/7075 , H04B1/7085 , H04B1/709 , H04B1/7095 , H04B2201/70707
摘要： The present invention reduces the scale of circuitry and shortens the code phase detection time needed to achieve initial synchronization. In a correlator for calculating correlation between a received spreading code contained in a received spread-spectrum signal and a reference spreading code, a combined code generator is included. The combined code generator outputs a combined spreading code by weighting and combining a plurality of phase-shifted reference spreading codes A1-AM. Further, an arithmetic circuit calculates correlation between the received spreading code and the plurality of phase-shifted reference spreading codes simultaneously. A phase detection circuit detects the phase difference between the received spreading code and a reference spreading code, namely the phase of the received spreading code from the results of the arithmetic operation.
摘要翻译：本发明减小了电路规模，缩短了实现初始同步所需的码相位检测时间。在用于计算包含在接收扩展频谱信号中的接收扩展码与参考扩展码之间的相关性的相关器中，包括组合码发生器。组合码发生器通过加权和组合多个相移参考扩展码A1-AM来输出组合扩展码。此外，算术电路同时计算接收的扩展码与多个相移参考扩展码之间的相关性。相位检测电路从算术运算结果检测接收到的扩展码与参考扩展码之间的相位差，即接收到的扩展码的相位。

56. 发明授权

US06496474B1 Spread encoding device and method 失效
标题翻译：扩展编码装置和方法
公开(公告)号：US06496474B1
公开(公告)日：2002-12-17
申请号：US09159377
申请日：1998-09-23
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hajime Hamada
IPC分类号： H04J1302
CPC分类号： H04L1/0059 , H04J3/0602 , H04J13/0022 , H04J13/102 , H04L1/0042
摘要： An m-bit shift register stores data to be sent that are generated by a data generator 1 bit at a time sequentially. An orthogonal M sequence generator generates an M sequence with the m bits of data to be sent that are stored in the shift register as an initial value, then generates an orthogonal M sequence from that M sequence. A clock signal generator generates a clock signal of frequency 2m times the data rate of the data to be sent. The orthogonal M sequence generator operates in accordance with that clock signal.
摘要翻译：一个m位移位寄存器一次存储由数据发生器1位产生的要发送的数据。正交M序列发生器产生具有存储在移位寄存器中的要发送的数据的m位的M序列作为初始值，然后从该M序列生成正交M序列。时钟信号发生器产生频率为要发送的数据的数据速率2m倍的时钟信号。正交M序列发生器根据该时钟信号进行工作。

57. 发明授权

US6097714A Code multiplexing transmitting apparatus 失效
公开(公告)号：US6097714A
公开(公告)日：2000-08-01
申请号：US872358
申请日：1997-06-10
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L27/20 , H04B1/707 , H04B1/7097 , H04J13/00 , H04J13/12 , H04B7/216 , H04B15/00 , H04Q7/28
CPC分类号： H04J13/00 , H04B1/707 , H04J13/0051 , H04B2201/70701 , H04B2201/70706 , H04J13/12
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

58. 发明授权

US6041034A Spread spectrum communication system 失效
标题翻译：扩频通信系统
公开(公告)号：US6041034A
公开(公告)日：2000-03-21
申请号：US940479
申请日：1997-09-30
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
IPC分类号： H04B1/69 , H04B7/26 , H04J11/00 , H04J13/12 , H04W88/00 , H04B7/216 , H04B7/212 , H04B1/38
CPC分类号： H04J13/102 , H04J13/0025
摘要： Co-channel interference may be prevented even if data having different transmission rates are concurrently multiplied to a same frequency band width with a different spreading factors. A method for generating code division multiple access data from data having different rates by a direct spread spectrum includes the steps of combining an orthogonal code and a reversed orthogonal code obtained by inverting the orthogonal code, for each of orthogonal code sequence structured by an m-sequence thereby to generate a first sequence of orthogonal codes, combing two of the orthogonal code for each of orthogonal code sequences structured by the m-sequence thereby to generate a second sequence of orthogonal codes, combining two of the reversed orthogonal code for each of orthogonal code sequences structured by the m-sequence thereby to generate a third sequence of orthogonal codes, and generating another orthogonal code having twice a code length of the orthogonal code from the first, second and third sequence of orthogonal codes; and multiplying the generated orthogonal code and a different m-sequence, together.
摘要翻译：即使具有不同传播速率的数据被同时乘以具有不同扩频因子的相同频带宽度，也可以防止同信道干扰。一种用于通过直接扩展频谱从具有不同速率的数据产生码分多址数据的方法，包括以下步骤：对由正交码构成的正交码序列中的每一个组合正交码和反相正交码，从而产生正交码的第一序列，对由m序列构成的每个正交码序列组合正交码中的两个，从而产生正交码的第二序列，将正交码中的每一个合成两个正交码由m序列构成的码序列，从而产生正交码的第三序列，并且从正交码的第一，第二和第三序列生成具有正交码的码长的两倍的另一个正交码; 并将所生成的正交码与不同的m序列相乘。

59. 发明授权

US06826169B1 Code multiplexing transmitting apparatus 有权
标题翻译：码复用发送装置
公开(公告)号：US06826169B1
公开(公告)日：2004-11-30
申请号：US09615862
申请日：2000-07-13
申请人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
发明人： Kazuo Nagatani , Yasuyuki Oishi , Hidenobu Fukumasa , Hajime Hamada , Yoshihiko Asano
IPC分类号： H04L512
CPC分类号： H04J13/0003 , H04B1/707 , H04B2201/70706 , H04J13/0051 , H04J13/18
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.
摘要翻译：扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

60. 发明授权

US6058138A Radio reception system providing improved transmission quality 失效
标题翻译：无线电接收系统提供改善的传输质量
公开(公告)号：US6058138A
公开(公告)日：2000-05-02
申请号：US870606
申请日：1997-06-06
申请人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
发明人： Hidenobu Fukumasa , Yasuyuki Oishi , Kazuo Nagatani , Hajime Hamada
IPC分类号： H04B7/005 , G06F17/15 , H04B7/08 , H04L1/06 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04B1/7115 , H04B7/0854 , H04L1/06 , H04B1/709
摘要： A radio receiver includes a plurality of demodulating units for demodulating a received radio wave received via a plurality of paths so as to produce respective demodulated signals, and combining units for executing a combination process of synchronizing and combining the demodulated signals produced by the plurality of demodulating units, the combining units correlating the demodulated signals produced by the plurality of demodulating units and excluding from a combination process a demodulated signal that meets a predetermined condition based on a predetermined algorithm.
摘要翻译：无线接收机包括多个解调单元，用于解调通过多个路径接收的接收的无线电波，以便产生各自的解调信号;以及组合单元，用于执行同步和组合由多个解调产生的解调信号单元，所述组合单元将由所述多个解调单元产生的解调信号相关，并且从组合处理除了基于预定算法的满足预定条件的解调信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式