RF communication system having a chaotic signal generator and method for generating chaotic signal
    1.
    发明授权
    RF communication system having a chaotic signal generator and method for generating chaotic signal 有权
    RF通信系统具有混沌信号发生器和产生混沌信号的方法

    公开(公告)号:US08005220B2

    公开(公告)日:2011-08-23

    申请号:US11709790

    申请日:2007-02-23

    IPC分类号: H04L9/00 H04K3/00

    CPC分类号: H04L27/001

    摘要: A radio frequency (RF) communication system having a chaotic signal generator and a method of generating a chaotic signal. The RF communication system includes a chaotic signal generator which generates a chaotic signal having a plurality of frequency components at a predetermined frequency band, a modulator which generates a chaotic carrier by combining the chaotic signal with a data signal which indicates information, and a transmission circuit which includes an antenna to transmit the chaotic carrier made at the modulator. The frequency signal generator comprises an oscillator which converts a DC bias power into a high frequency power, and a resonating unit which generates a wideband signal having a plurality of frequency components by passing a predetermined frequency band of the high frequency power signal.

    摘要翻译: 具有混沌信号发生器的射频(RF)通信系统和产生混沌信号的方法。 RF通信系统包括:混合信号发生器,其产生具有预定频带的多个频率分量的混沌信号;调制器,其通过将混沌信号与表示信息的数据信号组合而产生混沌载波;发送电路 其包括用于传输在调制器处制造的混沌载波的天线。 频率信号发生器包括将DC偏置功率转换成高频功率的振荡器,以及通过使高频功率信号的预定频带通过,生成具有多个频率分量的宽带信号的谐振单元。

    Wireless communication system for reducing ranging time
    2.
    发明授权
    Wireless communication system for reducing ranging time 有权
    无线通信系统,减少测距时间

    公开(公告)号:US07787516B2

    公开(公告)日:2010-08-31

    申请号:US11501829

    申请日:2006-08-10

    IPC分类号: H04B1/00

    摘要: A wireless communication system and a method for reducing a ranging time. The communication system includes a main synchronization block group which processes the transceived signal and determines whether the transceived signal is a signal desired by a transmitting device when a receiving device re-transmits the transceived signal to the transmitting device; a ranging block which measures a distance between the transmitting device and the receiving device using a ranging signal when the transceived signal is the desired signal of the transmitting device based on the determination of the main synchronization block group and when the transceived signal is the ranging signal; and a symbol synchronization block which detects a start point and an end point of a symbol forming the signal when the transceived signal from the receiving device is a data communication signal. Accordingly, the fast ranging is feasible and channel occupation time can be shortened.

    摘要翻译: 一种无线通信系统和减少测距时间的方法。 所述通信系统包括:主同步块组,其处理所述收发信号,并且当接收设备将所述收发信号重新发送到所述发送设备时,确定所述收发信号是否为发送设备所期望的信号; 测距块,其基于主同步块组的确定以及当发送的信号是测距信号时,当发送信号是发送设备的期望信号时,使用测距信号来测量发送设备和接收设备之间的距离 ; 以及符号同步块,其当来自接收装置的收发信号是数据通信信号时,检测形成信号的符号的起始点和终点。 因此,快速测距是可行的,可以缩短通道占用时间。

    Pulse position based-chaotic modulation (PPB-CM) communication system and method
    4.
    发明授权
    Pulse position based-chaotic modulation (PPB-CM) communication system and method 有权
    基于脉冲位置的混沌调制(PPB-CM)通信系统及方法

    公开(公告)号:US08103002B2

    公开(公告)日:2012-01-24

    申请号:US11489458

    申请日:2006-07-20

    IPC分类号: H04L9/00

    CPC分类号: H04L25/4902 H04L27/001

    摘要: A PPB-CM communication system and method. The PPB-CM communication system includes a transmitter which splits a symbol period, which is a transmission unit of a communication signal, into at least a pair of parts, inserts a data signal into one of the parts, and transmits a communication signal having the data signal inserted; and a receiver which receives the communication signal from the transmitter and determines bit information of the symbol period according to which part of the symbol period has the data signal inserted, as determined by comparison of energy levels of the parts. Accordingly, a separate threshold is not required to determine the data bit of the symbol period. Thus, the communication signal can be accurately determined. Also, the communication system can be simply implemented without need of a delay line.

    摘要翻译: 一种PPB-CM通信系统及方法。 PPB-CM通信系统包括将作为通信信号的发送单元的符号周期分割成至少一对部分的发送器,将数据信号插入到该部分之一中,并发送具有 数据信号插入; 以及接收器,其从发送器接收通信信号,并且根据部件的能级的比较确定,根据符号周期的哪个部分具有插入的数据信号来确定符号周期的位信息。 因此,不需要单独的阈值来确定符号周期的数据位。 因此,可以准确地确定通信信号。 此外,通信系统可以简单地实现,而不需要延迟线。

    Method and apparatus for measuring distance using low clock rate signal
    5.
    发明授权
    Method and apparatus for measuring distance using low clock rate signal 有权
    使用低时钟速率信号测量距离的方法和装置

    公开(公告)号:US07518546B2

    公开(公告)日:2009-04-14

    申请号:US11369724

    申请日:2006-03-08

    IPC分类号: G01S13/08

    CPC分类号: G01S13/76

    摘要: Provided is an apparatus and a method of measuring a distance between devices using a low clock frequency signal. The apparatus includes clock frequency generators, counters, a controller and a calculator for determining the distance based on clock signal overlap. Radio waves are transmitted and a number of clocks of a clock signal having a clock frequency b are counted, and if the transmitted radio waves are received again, a number of clocks of a clock signal having a clock frequency a are counted. If the clock signals having the clock frequencies a and b overlap with each other, counting of the numbers of the clocks of the clock signals having the frequencies b and a stops, and the distance is measured using the count values of the clock signals having the clock frequencies a and b. As a result, number of clocks of clock signals having low clock frequencies with a uniform difference can be counted to precisely measure a distance.

    摘要翻译: 提供了使用低时钟频率信号来测量设备之间的距离的装置和方法。 该装置包括时钟频率发生器,计数器,控制器和用于基于时钟信号重叠确定距离的计算器。 对无线电波进行发送,对具有时钟频率b的时钟信号的时钟数进行计数,并且如果再次接收到发送的无线电波,则对具有时钟频率a的时钟信号的时钟数进行计数。 如果具有时钟频率a和b的时钟信号彼此重叠,则具有频率b和a的时钟信号的时钟数的计数停止,并且使用具有频率b和a的时钟信号的计数值来测量距离 时钟频率a和b。 结果,可以计数具有均匀差的具有低时钟频率的时钟信号的时钟数,以精确地测量距离。

    Method and apparatus for measuring distance using low clock rate signal

    公开(公告)号:US20060214840A1

    公开(公告)日:2006-09-28

    申请号:US11369724

    申请日:2006-03-08

    IPC分类号: G01S13/08

    CPC分类号: G01S13/76

    摘要: Provided is an apparatus and a method of measuring a distance between devices using a low clock frequency signal. The apparatus includes clock frequency generators, counters, a controller and a calculator for determining the distance based on clock signal overlap. Radio waves are transmitted and a number of clocks of a clock signal having a clock frequency b are counted, and if the transmitted radio waves are received again, a number of clocks of a clock signal having a clock frequency a are counted. If the clock signals having the clock frequencies a and b overlap with each other, counting of the numbers of the clocks of the clock signals having the frequencies b and a stops, and the distance is measured using the count values of the clock signals having the clock frequencies a and b. As a result, number of clocks of clock signals having low clock frequencies with a uniform difference can be counted to precisely measure a distance.

    Communication system using length shift keying modulation method
    7.
    发明授权
    Communication system using length shift keying modulation method 有权
    通信系统采用长移键控调制方式

    公开(公告)号:US07933320B2

    公开(公告)日:2011-04-26

    申请号:US11499700

    申请日:2006-08-07

    IPC分类号: H04B1/38 H04L5/16

    CPC分类号: H04L27/00

    摘要: A communication system using a length shift keying (LSK) modulation method provides a transmitter having a carrier signal generator for generating carrier signals, and a modulator for modulating lengths of the carrier signals from the carrier signal generator according to combinations of data bits, and a receiver having an integrator for calculating an energy value by integrating the carrier signal that corresponds to a data bit combination, and a data judgment unit for judging the data bit combination by comparing the energy value with a predetermined threshold value. Power is maintained without changing the bandwidth of a communication signal when the communication signal is modulated.

    摘要翻译: 使用长移键控(LSK)调制方法的通信系统提供具有用于产生载波信号的载波信号发生器的发射机,以及用于根据数据比特的组合来调制来自载波信号发生器的载波信号长度的调制器, 具有用于通过对与数据位组合相对应的载波信号进行积分来计算能量值的积分器的接收机,以及用于通过将能量值与预定阈值进行比较来判断数据比特组合的数据判断单元。 当通信信号被调制时,维持功率而不改变通信信号的带宽。

    Communication system using length shift keying modulation
    9.
    发明申请
    Communication system using length shift keying modulation 有权
    通信系统采用长距离键控调制

    公开(公告)号:US20070121735A1

    公开(公告)日:2007-05-31

    申请号:US11499700

    申请日:2006-08-07

    IPC分类号: H04L27/00

    CPC分类号: H04L27/00

    摘要: A communication system using a length shift keying (LSK) modulation method provides a transmitter having a carrier signal generator for generating carrier signals, and a modulator for modulating lengths of the carrier signals from the carrier signal generator according to combinations of data bits, and a receiver having an integrator for calculating an energy value by integrating the carrier signal that corresponds to a data bit combination, and a data judgment unit for judging the data bit combination by comparing the energy value with a predetermined threshold value. Power is maintained without changing the bandwidth of a communication signal when the communication signal is modulated.

    摘要翻译: 使用长移键控(LSK)调制方法的通信系统提供具有用于产生载波信号的载波信号发生器的发射机,以及用于根据数据比特的组合来调制来自载波信号发生器的载波信号长度的调制器, 具有用于通过对与数据位组合相对应的载波信号进行积分来计算能量值的积分器的接收机,以及用于通过将能量值与预定阈值进行比较来判断数据比特组合的数据判断单元。 当通信信号被调制时,维持功率而不改变通信信号的带宽。

    Communication system having reduced delay time
    10.
    发明授权
    Communication system having reduced delay time 有权
    通信系统延迟时间缩短

    公开(公告)号:US07822144B2

    公开(公告)日:2010-10-26

    申请号:US11486179

    申请日:2006-07-14

    IPC分类号: H04L27/00

    CPC分类号: H04L27/001

    摘要: A communication system includes a transmitter having a signal generator for generating a signal for transmitting data, a transmission delay unit for repeatedly delaying the signal from the signal generator for a predetermined delay time within a symbol period and generating corresponding delayed signals, and a selector for selectively providing one of the delayed signals from the transmission delay unit to an antenna; and a receiver having a reception delay unit for receiving the signal from the transmitter and delaying the signal as long as the delay time of the transmission delay unit, and a data judgment block for discriminating data bits of the signal from the transmitter by comparing the signal from the transmitter with the delayed signal from the reception delay unit. According to the communication system, the delay time can be accurately adjusted even if the delay line is shortened, and the data bits of the communication signal can be accurately judged in the receiver side.

    摘要翻译: 通信系统包括具有用于产生用于发送数据的信号的信号发生器的发送器,用于在符号周期内重复地延迟来自信号发生器预定延迟时间的信号并产生相应的延迟信号的发送延迟单元,以及用于 选择性地将所述延迟信号中的一个从所述传输延迟单元提供给天线; 以及接收机,具有接收延迟单元,用于从发射机接收信号,并且只要传输延迟单元的延迟时间延迟信号;以及数据判断块,用于通过比较信号来识别来自发射机的信号的数据位 来自发射机,具有来自接收延迟单元的延迟信号。 根据通信系统,即使延迟线被缩短,也能够精确地调整延迟时间,并且可以在接收机侧准确地判断通信信号的数据位。