English translation for "升余弦"
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- raised cosine
Related Translations:
余弦加速度运动: cosine acceleration (or simple harmonic) motioncosine acceleration motioncosine acceleration （or simple harmonic） motion 升麻: rattletop; rhizoma; cimicifugae foetidae; rhizoma cimicifugae
- Example Sentences:
| 1. | High performance raise cosine filter design
高性能升余弦滤波器设计 | | 2. | 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。 | | 3. | 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。 | | 4. | 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。 | | 5. | 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。 | | 6. | Analyze , design and simulate the digital down - convert frequency . first , the analogue if signal is converted to digital if signal in one a / d convertor which used passband sampling theory . the digital if signal is then passed to a pair of digital mixers operating in phase quadrature for mixing the if signal to baseband signal
首先利用带通采样定理对中频模拟信号进行a / d变换后将其混频到基带，然后用平方根升余弦滚降滤波器同时完成低通滤波和匹配滤波双重作用，以提高解调器的效率。 | | 7. | Fpga and dvb standard are introduced firstly , dvb - c standard and composition of its system are analyzed completely , development of modulator structure and dvb - c digital modulator composition are presented , more over , analysis of respective modular are given . then , principle of dvb - c digital modulator system are presented , they are error control technique 、 mqam 、 nyquist rule and root raised cosine filter 、 window design method for fir filter 、 multi - rate signal processing ( integer interpolating , conversion of fractional sampling , equal conversion of net structure , polyphase structure for filter , poly - phase structure for interpolator , multi - stage implementation of samplying conversion ) 、 distrubited algorithm 、 cic filter 、 dds 、 cordic algorithm
接着,专门利用一个章节阐述了dvb - c前端调制系统原理,他们了差错控制技术、多进制调制( mqam ) 、 nyquist准则与平方根升余弦滤波器、有限冲击响应滤波器的窗函数设计法、多抽样率信号处理包括(整数倍内插原理、分数倍抽样率转换、网络结构的等效结构、滤波器的多相表示、内插器的多相表示、抽样率转换的多级实现) 、分布式算法、 cic滤波器、直接数字频率合成( dds ) 、 cordic算法。 | | 8. | The emphasis of the thesis is base - band signal shaping and programmable interpolation algorithm . we introduce the basic theory of base - band signal shaping , and the effect of the digitizing of the ideal raised cosine rollof signal g ( t ) is attentioned . the shaping filter parameters are determined based on the system specifications , and the simulation results are given
首先从降低邻近码间干扰原则出发,讨论了基带成形的基本原理与升余弦滚降滤波器的时频特性,重点分析将理想的滚降波形g ( t )数字化后对频谱的影响,并且根据系统指标,确定了各项参数,给出了具体的设计举例和仿真结果。 | | 9. | Abstract : a method by using 8031 single - clip microprocessor to get the syntonical bit information is presented , based on the characteristic of the modulated singal in ascending cosine envelope . the timer is locked at the maximum of the wave peak . the experiment results indicate that this method is feasible for 2 400 bps system
文摘:利用升余弦包络调制信号的特点，即基带信号为升余弦波，接收端可以利用这一包络，从中提取定时信息.提出了一种将时钟锁定到包络峰值最大点的单片机实现的方法，从而完成了在接收端正确提取定时信息的任务 |
- Similar Words：
- "升永" English translation, "升油泵" English translation, "升友" English translation, "升佑" English translation, "升于桅顶" English translation, "升余弦波形" English translation, "升余弦窗" English translation, "升余弦滚降" English translation, "升余弦脉冲" English translation, "升余弦频率响应" English translation
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