升余弦 meaning in English
raised cosine
Examples
- High performance raise cosine filter design
高性能升余弦滤波器设计 - This thesis emphasized the system of qpsk , trying to find a suited filter . the rising cosine filter is an important object for us to study , comparing with other filters
本文以qpsk的传输环境为研究基础，力求寻找出在这种传输环境下的最佳的匹配滤波器，对升余弦滤波器做了详尽的分析，并与其他的滤波器在性能上作了广泛的比较。 - Firstly , the airborne electromechanical system , the development of bus protocol , power line channel and power system are described in the dissertation ; secondly , the algorithm of qpsk and root raised cosin are discussed ; thirdly , the designation of the hardware and software of the modem board , based on qpsk , built up with dsp and cpld are given . the high - speed data transporting card of airborne electromechanical communication system , which is based on plc , are put forward in our country
本文介绍了飞机电力线载波数据通信系统的结构，并对低压电力线的信道特性进行了分析；对qpsk调制算法及均方根升余弦低通滤波算法进行了详细论证；设计出基于qpsk的调制解调模块，并在此基础上，研制出以dsp和cpld为最小系统的调制解调硬件电路板，开发了调制解调模块电路板的应用软件程序。 - According to the nyquist first criterion , the usual way is to use raising cosine shaping filter in real communication system . by choosing appropriate rolling off factor and determining the distribution of its characteristics between the transmitter and the receiver , the shaping , filter will minimize the nonlinear distortion , of channel
根据奈奎斯特第一准则，在实际的通信系统中，通常的途径是采用升余弦滚降成形滤波器，选择适当的滚降系数，并确定其特性在收、发两端的分配问题，以便将信道非线性的影响最小化。 - On the base of above it , this paper discuss the synthesis of optimum distributed arrays by nonuniform spacing in the sense of dolph - chebyshev . having derived the equations of optimum element distribution , we analyze the exponentially spaced array , which are optimum when the elements are isotropic and equally weighted , and the array by general raised cosine function . the formulate for estimating the sidelobe envelope , beamwidth of the array pattern and clean region width are obtained
推导了最佳阵元分布方程,分别对阵元无方向性和等加权时的最佳分布式阵列? ?指数间隔阵列和采用广义升余弦加权的最佳分布式阵列进行了分析,推导了天线方向图旁瓣包络、波束宽度,干净扫描区宽度的估计公式,给出了近轴旁瓣电平与阵列参数的关系。