公开(公告)号：US5218620A

公开(公告)日：1993-06-08

申请号：US852578

申请日：1992-03-17

申请人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

发明人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/713 ,  H04J13/00 ,  H04L7/00

CPC分类号： H04J13/00 ,  H04B1/707 ,  H04J13/0077

摘要： In a spread spectrum communication system for communicating data by spreading spectrum thereof, using PN codes, on the transmitter side, a first modulated output portion, which is spread-spectrum-modulated, containing no data to be transmitted and a second modulated output portion, which is spread-spectrum-modulated, following the first modulated output portion and containing data to be transmitted are generated; and the second modulated output portion is transmitted with a low electric power and the first modulated output portion with a high electric power. On the receiver side, a correlation-demodulated output is generated by correlation-demodulating a received input; and from the correlation-demodulated output consisting of a first correlation-demodulated output portion corresponding to the first modulated output portion and a second correlation-demodulated output portion corresponding to the second modulated output portion the first correlation-demodulated output portion is detected. Further timing signal serving as a reference for an operation on the receiver side is generated, starting from the first correlation-demodulated output portion.

摘要翻译： 在扩展频谱通信系统中，通过扩展频谱来传送数据，在发送机侧使用PN码，扩频调制的第一调制输出部分不包含要发送的数据和第二调制输出部分， 在第一调制输出部分之后并且包含要发送的数据被生成; 并且第二调制输出部分以低电力传输，并且第一调制输出部分具有高电力。 在接收机侧，通过对接收的输入进行相关解调产生相关解调输出; 并且从由与第一调制输出部分相对应的第一相关解调输出部分和对应于第二调制输出部分的第二相关解调输出部分组成的相关解调输出中，检测第一相关解调输出部分。 从第一相关解调输出部分开始，产生作为接收机侧的操作的基准的其他定时信号。

公开(公告)号：US5347537A

公开(公告)日：1994-09-13

申请号：US189186

申请日：1994-01-31

申请人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

发明人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

IPC分类号： H04B1/707 ,  H04J13/00 ,  H04L27/32

CPC分类号： H04B1/707 ,  H04J13/00

摘要： In a spread spectrum communication system for communicating data by spreading spectrum, thereof, using PN codes, on the transmitter side, a first modulated output portion, which is spread-spectrum-modulated, containing no data to be transmitted and a second modulated output portion, which is spread-spectrum-modulated, following the first modulated output portion and containing data to be transmitted are generated; and the second modulated output portion is transmitted with a low electric power and the first modulated output portion with a high electric power. On the receiver side, a correlation-demodulated output is generated by correlation-demodulating a received input; and from the correlation-demodulated output consisting of a first correlation-demodulated output portion corresponding to the first modulated output portion and a second correlation-demodulated output portion corresponding to the second modulated output portion the first correlation-demodulated output portion is detected. Further timing signal serving as a reference for an operation on the receiver side is generated, starting from the first correlation-demodulated output portion.

摘要翻译： 在扩展频谱通信系统中，通过扩展频谱来传送数据，在发射机侧使用PN码，扩频调制的第一调制输出部分不包含要传输的数据，第二调制输出部分 在第一调制输出部分之后并且包含要发送的数据被生成; 并且第二调制输出部分以低电力传输，并且第一调制输出部分具有高电力。 在接收机侧，通过对接收的输入进行相关解调产生相关解调输出; 并且从由与第一调制输出部分相对应的第一相关解调输出部分和对应于第二调制输出部分的第二相关解调输出部分组成的相关解调输出中，检测第一相关解调输出部分。 从第一相关解调输出部分开始，产生作为接收机侧的操作的基准的其他定时信号。

公开(公告)号：US5278864A

公开(公告)日：1994-01-11

申请号：US915926

申请日：1992-07-17

申请人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

发明人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

IPC分类号： H04J13/00 ,  H04B1/71 ,  H04L27/30

CPC分类号： H04J13/0022 ,  H04B1/707 ,  H04J13/10 ,  H04B1/7093

摘要： A spread spectrum communication device according to the present invention includes a transmitter and a receiver, and suppresses demodulation errors to a minimum value, even if there exit a plurality of narrow band disturbing signals. In the transmitter, a first PN (pseudo noise) code from a fist PN code generator and a second PN code having a delayed phase coming from a shift register are inputted to a multiplexer and switched according to an exclusive logic sum of data and a disturbing signal. The multiplexer output is modulated by a modulator so that it can be transmitted. In the receiver, a correlation output from a correlator is detected by a detector and a detection output thereof is digitalized by a voltage comparator. A correlation pulse thus obtained is applied to two AND gates. Two time window pulses are each applied to two multiplexers nd are switched by a control signal, the outputs of the multiplexers being respectively applied to these AND gates. Pulses from these AND gates are counted by an up-counter and a down-counter in a demodulating circuit to demodulate the data.

摘要翻译： 根据本发明的扩展频谱通信设备包括发射机和接收机，并且即使出现多个窄带干扰信号也将解调错误抑制到最小值。 在发射机中，来自第一PN码发生器的第一PN（伪噪声）码和具有来自移位寄存器的延迟相位的第二PN码被输入到多路复用器，并根据数据的异或逻辑和切换 信号。 多路复用器输出由调制器调制，使其可被传输。 在接收机中，相关器的相关输出由检测器检测，其检测输出由电压比较器数字化。 这样获得的相关脉冲被施加到两个“与”门。 两个时间窗脉冲各自被施加到两个多路复用器，nd由控制信号切换，多路复用器的输出分别施加到这些与门。 来自这些与门的脉冲由解调电路中的递增计数器和递减计数器进行计数，以解调数据。

公开(公告)号：US5323419A

公开(公告)日：1994-06-21

申请号：US19369

申请日：1993-02-17

申请人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

发明人： Masaharu Mori ,  Motohiro Gochi ,  Shigeru Takeuchi

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/713 ,  H04J13/00 ,  H04L7/00 ,  H04L27/06

CPC分类号： H04J13/00 ,  H04B1/707 ,  H04J13/0077

摘要： In a spread spectrum communication system for communicating data by spreading spectrum thereof, using PN codes, on the transmitter side, a first modulated output portion, which is spread-spectrum-modulated, containing no data to be transmitted and a second modulated output portion, which is spread-spectrum-modulated, following the first modulated output portion and containing data to be transmitted are generated; and the second modulated output portion is transmitted with a low electric power and the first modulated output portion with a high electric power. On the receiver side, a correlation-demodulated output is generated by correlation-demodulating a received input; and from the correlation-demodulated output consisting of a first correlation-demodulated output portion corresponding to the first modulated output portion and a second correlation-demodulated output portion corresponding to the second modulated output portion the first correlation-demodulated output portion is detected. Further timing signal serving as a reference for an operation on the receiver side is generated, starting from the first correlation-demodulated output portion.

摘要翻译： 在扩展频谱通信系统中，通过扩展频谱来传送数据，在发送机侧使用PN码，扩频调制的第一调制输出部分不包含要发送的数据和第二调制输出部分， 在第一调制输出部分之后并且包含要发送的数据被生成; 并且第二调制输出部分以低电力传输，并且第一调制输出部分具有高电力。 在接收机侧，通过对接收的输入进行相关解调产生相关解调输出; 并且从由与第一调制输出部分相对应的第一相关解调输出部分和对应于第二调制输出部分的第二相关解调输出部分组成的相关解调输出中，检测第一相关解调输出部分。 从第一相关解调输出部分开始，产生作为接收机侧的操作的基准的其他定时信号。

公开(公告)号：US5038362A

公开(公告)日：1991-08-06

申请号：US545377

申请日：1990-06-28

申请人： Shigeru Takeuchi ,  Motohiro Gochi

发明人： Shigeru Takeuchi ,  Motohiro Gochi

IPC分类号： H04J13/00 ,  H04B1/7093

CPC分类号： H04B1/70712

摘要： A spread spectrum receiver using a convolver controls the level of a reference signal applied to the convolver in response to comparison of a true correlation output and other correlation output of the convolver or, alternatively, in response to the level of received input signal.

摘要翻译： 使用卷积器的扩频接收机响应于真实相关输出和卷积器的其他相关输出的比较，或者响应于接收到的输入信号的电平，来控制施加到卷积器的参考信号的电平。