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    • 2. 发明授权
    • Bidirectional wireless communication system, wireless communication apparatus, and bidirectional wireless communication method
    • 双向无线通信系统,无线通信装置和双向无线通信方式
    • US08432839B2
    • 2013-04-30
    • US12923238
    • 2010-09-10
    • Masahiro Uno
    • Masahiro Uno
    • H04J1/00
    • H04B1/50H03J1/0008H03L7/24
    • A bidirectional wireless communication system includes: a first wireless communication apparatus for bidirectional communication configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and transmit a resultant transmission signal; and a second wireless communication apparatus, having an oscillator configured to oscillate a signal having a free-running oscillation frequency, configured to inject a reception signal received from the first wireless communication apparatus into the oscillator, receive the reception signal while variably controlling the free-running oscillation frequency of the oscillator of the second wireless communication apparatus, detect whether the free-running oscillation frequency of the signal of the oscillator of the second wireless communication apparatus has entered the frequency range up to the injection locking to be frequency-locked with a carrier frequency of the injected reception signal, and generate a communication enable signal.
    • 双向无线通信系统包括:用于双向通信的第一无线通信装置,被配置为将通过对具有预定载波频率的参考载波信号进行调制输入信号而获得的调制信号进行复用,并发送所得到的发送信号; 以及第二无线通信装置,其具有被配置为振荡具有自由运行的振荡频率的信号的振荡器,被配置为将从第一无线通信装置接收的接收信号注入到振荡器中,接收接收信号,同时可变地控制自由振荡频率, 运行第二无线通信装置的振荡器的振荡频率,检测第二无线通信装置的振荡器的信号的自由运行的振荡频率是否已经进入直到注入锁定的频率范围,以使其被锁定 并且产生通信使能信号。
    • 4. 发明授权
    • Method and device for transmitting signals in a wireless communication system, receiving device for receiving signals in a wireless communication system, with a special frame structure
    • 用于在无线通信系统中发送信号的方法和装置,用于以无线通信系统接收信号的接收装置,具有特殊的帧结构
    • US07511663B2
    • 2009-03-31
    • US11853403
    • 2007-09-11
    • Zhaocheng WangMasahiro UnoVolker Wullich
    • Zhaocheng WangMasahiro UnoVolker Wullich
    • H04B7/00H04B7/005
    • H04B7/0695H04B7/0408H04B7/0811H04B7/088H04W72/046
    • The present invention relates to a method for transmitting signals in a wireless communication system, in which signals are transmitted from a first communication device to a second communication device, said signals being transmitted in consecutive frames, each frame having a preamble section comprising preamble information, at least one of said first and said second communication devices having a narrow beam antenna which is adapted to be steered to different positions, each of said different positions corresponding to one of a number of different transmission paths from said first to said second communication device, comprising the steps of transmitting and receiving a first preamble section comprising preamble information enabling the estimation of a channel quality of a current transmission path, while said narrow beam antenna is in a current position corresponding to said current transmission path, steering said narrow beam antenna from said current position to a different position corresponding to a candidate transmission path, and transmitting and receiving a second preamble section comprising preamble information enabling the estimation of a channel quality of said candidate transmission path while said narrow beam antenna is in said different position. The present invention further relates to a corresponding transmission device as well as a receiving device.
    • 本发明涉及一种用于在无线通信系统中发送信号的方法,其中信号从第一通信设备发送到第二通信设备,所述信号以连续帧发送,每帧具有包括前同步码信息的前导码部分, 所述第一通信设备和所述第二通信设备中的至少一个具有窄波束天线,其适于被转向不同的位置,所述不同位置中的每一个对应于从所述第一通信设备到所述第二通信设备的多个不同传输路径中的一个, 包括以下步骤:发送和接收包括能够估计当前传输路径的信道质量的前导信息的第一前导码部分,同时所述窄波束天线处于对应于所述当前传输路径的当前位置,将所述窄波束天线从 表示目前的职位不同 并且发送和接收包括前导信息的第二前导码部分,所述前导码信息能够在所述窄波束天线处于所述不同位置时估计所述候选传输路径的信道质量。 本发明还涉及相应的传输设备以及接收设备。
    • 5. 发明授权
    • Orthogonal frequency division multiplexing (OFDM) system with channel transfer function prediction
    • 具有信道传递函数预测的正交频分复用(OFDM)系统
    • US07386072B2
    • 2008-06-10
    • US10413687
    • 2003-04-15
    • Masahiro Uno
    • Masahiro Uno
    • H04L27/06
    • H04L25/022H04L25/0204H04L27/2637
    • Wireless communication systems are provided with an adaptive subcarrier loading function for a mobile receiver in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM) that can advantageously be applied to predict the channel transfer function of a multipath propagation channel being severely impaired by frequency-selective fading and an extremely time-variant behavior by detecting the position and/or movement of zero points of the transfer function, thereby reducing the probability of incorrect assignment of the modulation scheme for each subcarrier caused by mobile terminals moving at high velocity. The zero points of the estimated channel transfer function are determined by detecting the position of deep notches on the associated amplitude response of the measured channel transfer function caused by frequency-selective fading whose depths are larger than a predefined threshold.
    • 无线通信系统在基于正交频分复用(OFDM)的无线通信系统中为移动接收机提供自适应子载波加载功能,其可以有利地应用于预测由频率严重损害的多径传播信道的信道传递函数 - 通过检测传递函数的零点的位置和/或移动来选择性衰落和非常时变的行为,从而降低由高速移动的移动终端引起的每个子载波的调制方案的错误分配的概率。 估计信道传递函数的零点是通过检测由深度大于预定阈值的频率选择性衰落引起的测量信道传递函数的相关振幅响应上的深陷波位置来确定的。
    • 6. 发明授权
    • Demodulating apparatus and demodulating method
    • 解调装置和解调方法
    • US06275521B1
    • 2001-08-14
    • US09274362
    • 1999-03-23
    • Masahiro Uno
    • Masahiro Uno
    • H04J1304
    • H04B1/7113H04B1/7117H04B17/364
    • A demodulating apparatus that can reduce power consumption significantly compare to conventional cellular phones without the reception quality being degraded. Delay profile measuring is provided in which the delay profile (S41) of the baseband signal is measured while changing the measuring time for measuring the delay profile of the baseband signal, so that the measuring time can be held down to a minimum while avoiding the degradation of the reception power level. Therefore, power consumption can be significantly reduced compared to conventional cellular phones without reception quality being degraded.
    • 与常规蜂窝电话相比,可以显着降低功耗的解调装置,而不会降低接收质量。 提供延迟曲线测量,其中测量基带信号的延迟分布(S41),同时改变用于测量基带信号的延迟分布的测量时间,从而可以将测量时间保持在最小同时避免劣化 的接收功率级别。 因此,与传统的蜂窝电话相比,功率消耗可以显着降低,而接收质量下降。