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    • 61. 发明授权
    • Communication system having reduced delay time
    • 通信系统延迟时间缩短
    • US07822144B2
    • 2010-10-26
    • US11486179
    • 2006-07-14
    • Jae-hyon KimYoung-hwan KimHyoun kuk KimHyun cheol ParkSeong-soo LeeJae seung Son
    • Jae-hyon KimYoung-hwan KimHyoun kuk KimHyun cheol ParkSeong-soo LeeJae seung Son
    • H04L27/00
    • H04L27/001
    • 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.
    • 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。
    • 62. 发明申请
    • METHOD FOR DIRECT CHAOTIC COMMUNICATIONS WITH PREDETERMINED SPECTRAL MASK
    • 用预定的光谱掩模进行直接通气的方法
    • US20100254430A1
    • 2010-10-07
    • US12815635
    • 2010-06-15
    • Seong-soo LeeYoung-hwan KimAlexander S. Dmitriev
    • Seong-soo LeeYoung-hwan KimAlexander S. Dmitriev
    • H04B1/69
    • H04L27/001H04B1/69
    • Spread spectrum transmission of information is performed using chaotic signals. Direct chaotic communication systems in which information is input to chaotic signal generated directly in information transmission frequency band, are achieved by forming broadband information carrier necessary for transmission and using a chaotic dynamic system whose structure is synthesized in advance in accordance with predetermined characteristics of broadband information carrier to cause chaotic dynamic system to provide operation of forming the broadband information carrier in form of a chaotic information carrier having prescribed spectral characteristics. Modulating the chaotic information carrier is carried out by forming chaotic radio or optic chaotic pulses from chaotic information carrier, with predetermined time intervals between pulses in accordance with the transmitted information signal, and the reception and demodulation at the receiving side is carried out using a dynamic system matched, in behavior, with chaotic dynamic system of transmitting side.
    • 使用混沌信号进行信息的扩频传输。 将信息输入到信息发送频带中直接生成的混沌信号的直接混沌通信系统通过形成传输所需的宽带信息载体并使用根据宽带信息的预定特性预先合成其结构的混沌动态系统来实现 导致混沌动态系统以具有规定频谱特性的混沌信息载体的形式提供形成宽带信息载体的操作。 混沌信息载体的调制是通过根据发送的信息信号,在脉冲之间以预定的时间间隔从混沌信息载体形成混沌无线电或光混沌脉冲,并且使用动态的方式来进行接收侧的接收和解调 系统匹配,在行为上,与发送方的混沌动态系统。
    • 63. 发明授权
    • Subharmonic mixer capable of reducing noise and enhancing gain and linearlty
    • 能够降低噪音并增强增益和线性度的次谐波混频器
    • US07616937B2
    • 2009-11-10
    • US11438223
    • 2006-05-23
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • Jin-soo ParkYong-hun KimChang-sik YooSeong-soo LeeHeung-bae Lee
    • H04B1/26H04B1/28
    • H03D7/166
    • A subharmonic mixer, including an amplification unit for amplifying an input signal using at least one pair of amplification devices connected in parallel and a mixing unit for mixing the amplified signal with local oscillation signals from local oscillators is provided. The mixing unit performs switching over the amplification devices and at least four pairs of switching devices connected in parallel with each other, two pairs of switching devices being connected in parallel with each other and performing switching over one amplification device. The switching devices are supplied with local oscillation signals having different phases respectively, and two switching devices forming a pair are connected in parallel with each other and supplied with local oscillation signals having a 180° phase difference therebetween. Accordingly, the switching stage is formed with one stage, the operation is enabled with low-voltage power supplies, and noise performance, linearity, and gain are enhanced.
    • 提供了一种次谐波混频器,其包括用于使用并联连接的至少一对放大装置放大输入信号的放大单元和用于将放大的信号与来自本地振荡器的本地振荡信号混合的混合单元。 混合单元对放大装置进行切换,并且至少四对开关装置彼此并联连接,两对开关装置彼此并联并执行一个放大装置的切换。 为开关器件分别提供具有不同相位的本地振荡信号,并且形成一对的两个开关器件彼此并联连接并且提供与它们之间具有180°相位差的本地振荡信号。 因此,开关级形成为一级,通过低压电源实现动作,提高噪声性能,线性度和增益。
    • 69. 发明申请
    • Signal transmitting method and apparatus using location division multiple access
    • 信号发射方法和装置,采用位分多址
    • US20060215706A1
    • 2006-09-28
    • US11360524
    • 2006-02-24
    • Jae-hyon KimYoung-hwan KimSu YongSeong-soo Lee
    • Jae-hyon KimYoung-hwan KimSu YongSeong-soo Lee
    • H04J3/06
    • H04L27/001
    • A method and apparatus for simplifying a structure needed to delay data in delay units when a reference signal and data are transmitted by using chaotic signals are provided. The method includes delaying data by at least two delay times, wherein each of the delay times occurs sequentially; multiplexing the data, which has been delayed, according to a control signal; and transmitting the data and a reference signal which corresponds to the data at an interval of delay time. The apparatus includes a first delay unit which is configured to delay data for a first delay time; a second delay unit which is configured to delay the data output from the first delay unit for a second delay time; and a multiplexer which is configured to multiplex the data from the first and second delay units according to a control signal.
    • 提供一种用于简化当通过使用混沌信号发送参考信号和数据时以延迟单元延迟数据所需的结构的方法和装置。 该方法包括将数据延迟至少两个延迟时间,其中每个延迟时间顺序地发生; 根据控制信号对已被延迟的数据进行多路复用; 并以延迟时间的间隔发送对应于数据的数据和参考信号。 该装置包括:第一延迟单元,被配置为延迟第一延迟时间的数据; 第二延迟单元,其被配置为将来自所述第一延迟单元的数据延迟第二延迟时间; 以及多路复用器,被配置为根据控制信号来复用来自第一和第二延迟单元的数据。