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    • 5. 发明公开
    • Method and device for modulating signals
    • Verfahren und Vorrichtung zur Modulation von Signalen
    • EP2222043A2
    • 2010-08-25
    • EP10152383.5
    • 2010-02-02
    • Huawei Technologies Co., Ltd.
    • Wang, YiZhang, JiayinChen, DagengBi, Xiaoyan
    • H04L27/34H04L27/04
    • H04L27/345H04L27/04
    • A method and device for modulating signals are disclosed. The method includes: receiving a signal after channel coding, and determining the number of constellation points N of the signal within an equal probability mapping interval [r i-1 ,r i ]; if a modulated output complies with Gaussian distribution, obtaining the end point value r i according to the distribution function of the modulated output, the N, and the total number of constellation points M; and obtaining the amplitude y i of constellation points according to the r i , the distribution function of the modulated output, and the M, so as to modulate the signal after channel coding. With the present invention, it can be guaranteed that the system performance is closer to the channel capacity in modulation modes such as Pulse Amplitude Modulation (PAM) and Quadrature Amplitude Modulation (QAM) when the modulated output complies with Gaussian distribution.
    • 公开了用于调制信号的方法和装置。 该方法包括:在信道编码之后接收信号,并确定等概率映射间隔[r i-1,r i]内的信号的星座点数N; 如果调制输出符合高斯分布,则根据调制输出的分布函数N和星座点M的总数获得终点值r i; 并且根据r i,调制输出的分布函数和M获得星座点的振幅y i,以便对信道编码之后的信号进行调制。 利用本发明,当调制输出符合高斯分布时,可以保证系统性能更接近于诸如脉冲幅度调制(PAM)和正交幅度调制(QAM)的调制模式中的信道容量。
    • 8. 发明公开
    • TRANSMITTING METHOD, RECEIVING METHOD, TRANSMITTER AND RECEIVER
    • 发送方法,接收方法,发送器和接收器
    • EP3258631A1
    • 2017-12-20
    • EP17183530.9
    • 2012-11-07
    • Sun Patent Trust
    • PETROV, Mihail
    • H04L1/00H04L27/34
    • H04B7/06H04L1/0042H04L1/0071H04L27/3444H04L27/345
    • D-dimensional vectors that each have D real-valued symbols as elements are converted into D-dimensional rotated vectors that each have D real symbols as elements. The conversion is performed by multiplying each of the D-dimensional vectors by a D×D orthogonal matrix. A complex symbol sequence including N C = N S /2 complex symbols is generated from N S real symbols. The complex symbol sequence is generated such that the distance between any two of the D real symbols of each of the D-dimensional rotated vectors is N C /D complex symbols or N C /D-l complex symbols, or such that the distance between any two of the D real symbols of each of the D-dimensional rotated vectors, except for part of the D-dimensional rotated vectors, is N C /D complex symbols or N C /D-l complex symbols.
    • 分别具有D个实值符号作为元素的D维矢量被转换为D个旋转矢量,每个D维旋转矢量具有D个实数符号作为元素。 通过将每个D维矢量乘以D×D正交矩阵来执行该转换。 从NS个实符号生成包括NC = NS / 2个复符号的复符号序列。 生成复数符号序列,使得每个D维旋转向量中的任何两个D实符号之间的距离是NC / D复数符号或NC / Dl复数符号,或者使得任何两个D维实数符号之间的距离 D维旋转向量中的每一个的除D维旋转向量之外的D个实符号是NC / D复数符号或NC / D1复数符号。