查询词典 baseband

Signal forming and different demodulation of GMSK baseband signal are mainly discussed in the dissertation. Gauss Filter, phase integral, SIN table, matched filter, calculate angle, bit-synchronization、output filter、A/D、D/A and etc of GMSK baseband signal are carefully studied through software emulation in SYSTEMVIEW environment. The modulation and demodulation of GMSK baseband signal are carried out by the way of using TMS320VC549 of TI to integrate software and hardware.

本文重点讨论了GMSK基带信号的形成以及GMSK基带信号的差分解调，系统在SYSTEMVIEW的环境下进行了软件仿真，通过对系统的仿真工作，仔细的研究了GMSK基带信号的高斯预滤波器、相位积分、SIN查表、匹配滤波器、相角计算、位同步、帧同步、输出滤波、A/D和D/A等。

Second chapter is about baseband transmission principle and baseband channel capacity.

第三章分析了基带通信的实现方法和主要技术。

Switch between two audio signals in a single phone, one from a digital baseband detector, the other from an analog baseband detector, to drive the final audio output to an ear piece.

两个音频信号的切换一个电话，从数字基带探测器之一，从一个模拟基带探测器等，以推动最后的音频输出到一个耳片。

In the method of the invention, a baseband signal is pre-processed to realize nonlinearity compensation. The pre-processing method comprises the following steps: the filter coefficient and the multinomial coefficient of the high power amplifier are extracted; corresponding gain is calculated for the amplitude value of each point input into the sequence of the baseband signal, and the phase compensation value is calculated according to the amplitude gain; the phase compensation value and the gain which are corresponding to each point are synthesized into re-gain, a pre-processing value pi is obtained, and pre-processing output sequence is formed; the pre-processing output sequence is output into the high power amplifier directly or through a inverse filter.

本发明方法是将基带信号进行预处理来实现抵偿非线性，预处理方法是：提取出高功率放大器的滤波器系数和多项式系数；对输入基带信号序列中的每一点的幅值计算对应的增益，根据幅度增益计算出相位补偿值；每一个点对应的相位补偿值与增益合成复增益，得到预处理值p i ，构成了预处理输出序列；将预处理输出序列直接或经过反向滤波器后输出到高功率放大器中。

The platform of system constructing frame in baseband is constructed in MATLAB in this paper, and also the platform of the system revivification the baseband frame for test.

同时根据IEEE 802.15.3a协议，确定了组帧系统的设计方案：扰码、(2，1，6)卷积编码和(7×10)卷积交织。

The data goes through the system constructing frame in baseband and the system revivification the baseband frame, and the data got in destination are as same as the source data.

为了直观的显示结果，用512×512像素的lenna图做为输入数据，经过组帧和解帧系统后，还原出来的数据和原始数据进行比较。

A CW carrier signal, generated by Agilent Signal Generator, is transmitted to the subject, which reflects the modulated waves to the receiver antenna. The Agilent Spectrum Analyzer, with an under-conversion module inside, demodulates the received signal to 70MHz IF signal, which is then sampled by a ADC module in Agilent Vector Signal Analyzer. Digital quadrature demodulation is used to convert IF signal to baseband. We could finally get the respiration and heartbeat signal by further analyzing the baseband signal.

该系统由信号发射器产生载波，通过天线发射到被测物体；频谱分析仪内置的下变频模块将由物体反射回来的信号下变频到70MHz中频；中频信号经矢量信号分析仪采样，然后经过数字正交解调变频到基带信号；对基带信号进行滤波、FFT等进一步的数字信号处理后即可获得探测的心跳和呼吸信号。

Japan's main Samsung, Japan Bando, Germany than Austria, the United States Gates, Italy SAMPLA, Netherlands DERCO, varieties are: conveyor belt, using Teflon oven conveyor belt, V-belt, timing belts, speed zone, on-chip baseband, with a round steel and steel deduction and the deduction of such mechanical and electrical spare parts, the operating company, I really merged with the world.

主要有日本三星、日本阪东、德国奥比、美国盖茨、意大利SAMPLA、荷兰DERCO等，品种有：输送带、烘箱用铁氟龙输送带、三角带、同步带、变速带、片基带、圆带以及钢扣和钢扣机之类机电零配件，我公司的经营真正做到了与世界并轨。

Digital baseband signal transmission is the digital communication system, one of an important part of.

数字基带信号的传输是数字通信系统的重要组成部分之一。

What is the difference between baseband and broadband?

之间的区别是什么基带和宽带？

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。