公开(公告)号：US5241562A

公开(公告)日：1993-08-31

申请号：US894073

申请日：1992-06-05

申请人： Andrzej Partyka ,  Lee F. Crowley

发明人： Andrzej Partyka ,  Lee F. Crowley

IPC分类号： H04B1/707

CPC分类号： H04B1/707

摘要： A spread spectrum communication system for direct sequence transmission of digital information having a modulation format which is particularly suitable for indoor communication within residential, office and industrial structures. The modulation format combines BPSK or MSK spreading with FM carrier modulation by data bits and a carrier frequency shift whose magnitude is related to both a chip rate and a spreading sequence length. The carrier, chip clock and data clock are all synchronous and the sequence length is an integral submultiple of the bit length. The system reduces the frequency error between the transmitter chip clock and the receiver chip clock to permit the elimination of a code phase tracking loop in the receiver to reduce the receiver complexity. The receiver has an extended dynamic range which makes possible the reception of very strong signal without an automatic gain control loop (AGC) as well as reducing the time needed for code phase acquisition. The transmission system is highly resistant to CW jamming and short distance multipath effects.

摘要翻译： 一种用于直接序列传输数字信息的扩频通信系统，其具有特别适用于住宅，办公和工业结构内的室内通信的调制格式。 调制格式将BPSK或MSK扩展与FM载波调制结合数据位和载波频移，其幅度与码片速率和扩频序列长度相关。 载波，芯片时钟和数据时钟均为同步，序列长度为位长度的整数倍。 该系统减少了发射机芯片时钟和接收器芯片时钟之间的频率误差，以便消除接收机中的码相位跟踪环路，以减少接收机的复杂度。 接收机具有扩展的动态范围，这使得可以在没有自动增益控制回路（AGC）的情况下接收非常强的信号，并且减少代码相位采集所需的时间。 传输系统对CW干扰和短距离多径效应具有很高的抗干扰能力。

公开(公告)号：US5121407A

公开(公告)日：1992-06-09

申请号：US589323

申请日：1990-09-27

申请人： Andrzej Partyka ,  Lee F. Crowley

发明人： Andrzej Partyka ,  Lee F. Crowley

IPC分类号： H04B1/707

CPC分类号： H04B1/707

摘要： A spread spectrum communication system for direct sequence transmission of digital information having a modulation format which is particularly suitable for indoor communication within residential, office and industrial structures. The modulation format combines BPSK or MSK spreading with FM carrier modulation by data bits and a carrier frequency shift whose magnitude is related to both a chip rate and a spreading sequence length. The carrier, chip clock and data clock are all synchronous and the sequence length is an integral submultiple of the bit length. The system reduces the frequency error between the transmitter chip clock and the receiver chip clock to permit the elimination of a code phase tracking loop in the receiver to reduce the receiver complexity. The receiver has an extended dynamic range which makes possible the reception of very strong signal without an automatic gain control loop (AGC) as well as reducing the time needed for code phase acquisition. The transmission system is highly resistant to CW jamming and short distance multipath effects.

公开(公告)号：USRE35650E

公开(公告)日：1997-11-04

申请号：US490955

申请日：1995-06-15

申请人： Andrzej Partyka ,  Lee F. Crowley

发明人： Andrzej Partyka ,  Lee F. Crowley

IPC分类号： H04B1/707 ,  H04L27/30

CPC分类号： H04B1/707

摘要： A spread spectrum communication system for direct sequence transmission of digital information having a modulation format which is particularly suitable for indoor communication within residential, office and industrial structures. The modulation format combines BPSK or MSK spreading with FM carrier modulation by data bits and a carrier frequency shift whose magnitude is related to both a chip rate and a spreading sequence length. The carrier, chip clock and data clock are all synchronous and the sequence length is an integral submultiple of the bit length. The system reduces the frequency error between the transmitter chip clock and the receiver chip clock to permit the elimination of a code phase tracking loop in the receiver to reduce the receiver complexity. The receiver has an extended dynamic range which makes possible the reception of very strong signal without an automatic gain control loop (AGC) as well as reducing the time needed for code phase acquisition. The transmission system is highly resistant to CW jamming and short distance multipath effects.

摘要翻译： 一种用于直接序列传输数字信息的扩频通信系统，其具有特别适用于住宅，办公和工业结构内的室内通信的调制格式。 调制格式将BPSK或MSK扩展与FM载波调制结合数据位和载波频移，其幅度与码片速率和扩频序列长度相关。 载波，芯片时钟和数据时钟均为同步，序列长度为位长度的整数倍。 该系统减少了发射机芯片时钟和接收器芯片时钟之间的频率误差，以便消除接收机中的码相位跟踪环路，以减少接收机的复杂度。 接收机具有扩展的动态范围，这使得可以在没有自动增益控制回路（AGC）的情况下接收非常强的信号，并且减少代码相位采集所需的时间。 传输系统对CW干扰和短距离多径效应具有很高的抗干扰能力。

公开(公告)号：USRE35209E

公开(公告)日：1996-04-16

申请号：US257840

申请日：1994-06-09

申请人： Andrzej Partyka ,  Lee F. Crowley

发明人： Andrzej Partyka ,  Lee F. Crowley

IPC分类号： H04B1/707 ,  H04B1/69

CPC分类号： H04B1/707

摘要： A spread spectrum communication system for direct sequence transmission of digital information having a modulation format which is particularly suitable for indoor communication within residential, office and industrial structures. The modulation format combines BPSK or MSK spreading with FM carrier modulation by data bits and a carrier frequency shift whose magnitude is related to both a chip rate and a spreading sequence length. The carrier, chip clock and data clock are all synchronous and the sequence length is an integral submultiple of the bit length. The system reduces the frequency error between the transmitter chip clock and the receiver chip clock to permit the elimination of a code phase tracking loop in the receiver to reduce the receiver complexity. The receiver has an extended dynamic range which makes possible the reception of very strong signal without an automatic gain control loop (AGC) as well as reducing the time needed for code phase acquisition. The transmission system is highly resistant to CW jamming and short distance multipath effects.

摘要翻译： 一种用于直接序列传输数字信息的扩频通信系统，其具有特别适用于住宅，办公和工业结构内的室内通信的调制格式。 调制格式将BPSK或MSK扩展与FM载波调制结合数据位和载波频移，其幅度与码片速率和扩频序列长度相关。 载波，芯片时钟和数据时钟均为同步，序列长度为位长度的整数倍。 该系统减少了发射机芯片时钟和接收器芯片时钟之间的频率误差，以便消除接收机中的码相位跟踪环路，以减少接收机的复杂度。 接收机具有扩展的动态范围，这使得可以在没有自动增益控制回路（AGC）的情况下接收非常强的信号，并且减少代码相位采集所需的时间。 传输系统对CW干扰和短距离多径效应具有很高的抗干扰能力。