第四章介绍了数字基带系统设计中数字前端设计。
Chapter 4 is about the digital front end design of base band system.
论述利用计算机对气象卫星数字基带信号解码的两种方法。
This paper reports two computerized methods for decoding the digital base band signal obtained from meteorological satellite.
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。
The digital baseband signal's transmission is one of digital communication system's important components.
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。
Digital baseband signal transmission is the digital communication system, one of an important part of.
完成了发射机数字基带部分模块的功能划分、性能分析与电路设计。
Then we divide the UHF Transmitter into several functional sub-modules, based upon side of which we analyze each sub-modules'performance and accomplish the design of their required circuits.
IJF编码是将数字基带信号变换成无符号间干扰和抖动的基带波形信号。
IJF coding refers to converting digital baseband signal into Intersymbol Interference and Jitter Free baseband signal.
在数字基带处理时，从正常载频信道中提取出导频信号，用于伪导频的发射。
When processing digital base-band, the signal of pilot-frequency was taken out from normal carrier channel and it would be used for transmitting pseudo pilot-frequency.
发射和接收单元(5)与时钟同步地将发射数字基带信号转换为发射模拟基带信号。
The transmitting and receiving unit (5) converts the transmission digital baseband signal into a transmission analog baseband signal in synchronization with the clock.
发射和接收单元(5)与时钟同步地将接收模拟基带信号转换为接收数字基带信号。
The transmitting and receiving unit (5) converts the reception analog baseband signal into a reception digital baseband signal in synchronization with a clock.
以数字基带传输系统为例，在数字基带通信系统数学模型分析基础上，设计了总体仿真框图。
Taking digital based-band transmission system as an example, the collectivity simulation frame are designed based on analysis of digital based-band transmission system mathematic model.
本文对二进制数字基带传输系统的阈值电压进行了图象上的解释，从而使该概念的意义更加清晰。
In this paper, the threshold voltage of binary digital baseband transmission system on graph is explained, so the concept's meaning is more clear.
对两种基本型式的预失真线性化技术数字基带预失真和射频预失真的组成原理进行了详尽的分析。
The composing principle of two kind of the predistortion linearization technologies-digital base-band predistortion linearizer and RF predistortion linearizer have been discussed in this paper.
论文的前两章介绍了课题研究的背景，数字基带转换器的国内外研究情况以及VLBI新技术的进展。
The first two chapters of this thesis will introduce the background of this project, the research status in domestic country and abroad, and the new technology on VLBI.
从三进制数字基带信号入手，结合二进制，利用交变波、稳态波分析了任意多进制数字基带信号的频谱特性。
This article proceeded with tri - nary baseband signal combining with binary ones, and then analyzed multi -nary digital baseband signal's frequency spectrum based on alternating wave and steady wave.
提出一种基于FPGA的IJF数字基带编码实现方案，具有高度集成、占用资源少、配置灵活、性能稳定的特点。
An implementation scheme of IJF coding based on FPGA is proposed, which has the features of highly integration, flexible configuration, stable performance.
文中提出了一种CD MA调制解调器射频电路和数字基带处理电路框图，分析了它们的组成及工作过程，设计了扩展功能用的系统连接器。
A new design of RF block diagram, digital baseband block diagram of CDMA modem, the form and working-process are analysised, in order to expand function, a system connector is designed.
在此基础上，结合RFID系统中电子标签芯片的工作原理，针对其特殊的低功耗需求，提出了一种适合电子标签数字基带处理器的分布式架构。
And based on the operation theory of the RFID tag, a distributed architecture for baseband-processor is proposed which meets the special requirement of the RFID tag.
此平台将主要用于数字移动通信手机基带算法开发。
This platform will be used for the development of baseband arithmetic of digital mobile telephone.
介绍超宽带线性调频信号基带的数字产生方法及其实现技术。
In this paper, the digital generation methods and the implementation techniques for Ultra wideband LFM baseband signals are introduced.
再结合基于FPGA的基带数字信号处理，便可实现在相同的硬件平台上开发不同的无线通信系统。
Moreover, combined with digital baseband signal processing with FPGA, we could develop various wireless communication systems on a typical hardware platform.
在数字信号的基带传输过程中，信息传输速率和系统带宽是系统的两个重要性能指标。
Both system bandwidth and transmission speed of code are very important property parameters in the baseband transmission process for digital signals.
目前，相对于前馈和反馈等线性化技术，基带数字预失真技术是性价比较好的解决方案。
At present, in contrast with feedback and feedforward, digital baseband predistortion is a highly cost-effective way to improve power amplifier's nonlinear characteristic.
本论文对今后数字通信系统基带部分的研究和实现具有很强的借鉴意义。
They could assemble the baseband part of several digital communication systems and have great significance in the future research and realization.
数字广播接收机前端电路指接收机中完成从射频到基带转换的部分，是决定接收机性能指标的关键部分。
The front end in a digital broadcasting receiver means the part of circuit that converting RF analog signal to baseband digital data stream.
在数字正交调制原理的基础上，宽带信号的产生问题实际上转换为如何得到高采样率下的时域基带信号。
Based on the principle of digital orthogonal modulation, the generation question of wide-band signal is factually identical with how to generate base-band signal with high sampling in time domain.
现代数字通信中广泛采用平方根升余弦滚降数字滤波器作为基带成形滤波器和匹配滤波器。
Square-root raised cosine roll-off digital filter was widely applied to baseband shaping filter and match filter in modern digital communication.
接着，收发信机102可耦合至数字信号处理器(DSP) 310可负责基带通信信号的处理。
In turn, transceiver 102 May be coupled to a digital signal processor (DSP) 310, which may handle processing of baseband communication signals.
给出了FM正交解调结构，即在统一的中频数字化硬件平台上，与单边带、调幅等波形一起在基带完成正交解调。
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.
给出了FM正交解调结构，即在统一的中频数字化硬件平台上，与单边带、调幅等波形一起在基带完成正交解调。
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.
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