baseband frequency
英
美
网络 基频
双语例句
- This paper presents a baseband discrete-time state-space model for generation of Rayleigh MD ( multiplicative distortion) in a frequency flat fading channel.
本文首先提出了在插入无调制片和匹配滤波接收机条件下，频率衰落信道的瑞利乘性畸变的简单基带离散模型。 - Implementation and Design of Baseband Controller for Low Power High Frequency RFID Tag IC
一种低功耗高频RFID标签芯片基带控制器 - Baseband is a network technology in which only one carrier frequency is used.
基带是一种网络技术，其中只有一个载波频率的使用。 - In this thesis, a novel baseband I/ Q estimation and compensation technique is proposed to overcome the frequency dependent I/ Q imbalance in MIMO-OFDM systems.
此论文提出一个新颖的基频处理方法来估计和补偿在MIMO-OFDM系统下，频率相依的I/Q不平衡效应。 - The system of the device include Digital Audio Broadcasting Tuner, Radio Data System Encoder, Baseband Mixer, Subcarrier Modulator, Frequency Modulation Modulator and Microprocessor.
此转换装置的系统架构包含数位广播讯号谐调器、无线数据系统编码器、基频混波器、副载波调变器、频率调变调变器以及微处理机。 - This paper introduces the characteristics of hopping frequency technology and the utilization of baseband and RF hopping frequency technology.
文中阐述了跳频技术的特点及基带和射频跳频技术的具体使用方法。 - Secondly, the characteristic of baseband signal and frequency band signal in RFID system are analyzed.
其次，分析射频识别系统基带信号与频带信号的特性，以及信道噪声与干扰的特点，指明信号的潜在影响因素。 - To satisfy the PCM telemetry baseband equipment performance requirements of the ground system of Beijing TTC& M earth station, a new design technique of digitized synthesizer whose output frequency can be changed continuously ( resolution: 1Hz) is proposed in this paper.
针对北京TTC＆M站地面编码遥测基带设备的性能指标要求，设计了一种高性能数控连续可调频率合成器，应用于航天测控系统中。 - In theory, although the IF signal and baseband signal with the same bandwidth can be sampled using the same frequency, sampling an IF signal is effected by jitter more badly, and its sampling techniques are more difficult.
理论上，尽管相同带宽的中频信号和基带信号可以用相同的频率进行采样，但中频采样受孔径抖动等因素的影响更大，其采样技术要求也更高。 - The excitation method which residual signal produced from baseband extraction and high frequency, reproduction is introduced.
对基带提取&高频再生残余信号的激励方式亦作了相应的介绍。 - By peak value sampling the information of baseband signal can be obtained from an AM signal directly. By frequency conversion sampling the carrier wave's frequency of a PSK signal can be cut down.
对AM信号进行峰值采样可以直接获得基带信号的信息，对PSK信号进行变频采样可以降低其载波频率。 - A relative complete baseband equivalent model for MQAM digital mobile communication system is described in this paper, which includes frequency selective Rayleigh fading channel, co-channel interferences, adjacent channel interferences and additive white Gaussian noises.
本文导出了一种较完备的高效调制MQAM数字移动通信系统的基带等效模型。所考虑的移动通信系统中包含频率选择性多径瑞利衰落信道、同频道干扰、邻频道干扰和加性高斯白噪声。 - FPGA Implementation of Baseband Processing Algorithms for Satellite Spread Spectrum Signals with Large Frequency Offset
大频偏卫星扩频信号的基带处理算法的FPGA实现 - Based on the analytical theory of communication baseband signal, the spectrum of low frequency time-code signal is deeply studied, and the analytical expression of practical signal is provided.
根据通信基带信号分析理论，对低频时码信号的频谱进行了研究，给出了实际信号的解析表达，对其频谱进行了分析。 - Research on the Baseband and Intermediate Frequency Units of Digital Microwave Transceiver
数字微波收发信机（基带、中频）研究 - Owing to the complexity of the ingredients of the frequency spectrum of FSK signals, which contain the continuous spectrum introduced by the baseband signal and discrete spectrum introduced by the carrier signal, it is difficult to accurately measure the frequency ingredients of FSK.
FSK信号的频谱成分比较复杂，包含基带信号引入的连续谱和载波信号引入的离散谱两部分，传统的信号处理方法难以准确测量。 - This article introduces the core chip ( baseband chip and radio frequency chip), uses "the Chinese clip group" SCDMA colored screen handset design and application.
介绍了核心芯片（基带芯片与射频芯片）采用中国芯的SCDMA彩屏手机的设计与应用。 - Based on the engineering practice, the composition, function and design of baseband equipment are explained detailedly, a method for measuring the time delay and frequency is introduced.
结合工程实践，从综合基带的设备组成、功能、设计上进行了详细阐述，并介绍了一种时延测量和频率测量的方法。 - Then the principle of OFDM technology is explained and the baseband signal process and the frequency conversion are discussed primarily with some detail problems explained.
然后阐述了OFDM技术原理，重点讨论了基带信号处理和变频两部分，对具体细节做了详细的说明。 - The reason lies in the fact that DPD avoids the complicated radio frequency signal processing, while only deals with the baseband signals at low frequency to facilitate the hardware implementation.
这是由于DPD不涉及复杂的射频信号处理，而只是在低频部分对基带信号进行处理，便于实际硬件实现。 - In the AIS baseband signal processing, we also need frame head detection, frequency shift estimation and symbol timing algorithm to assist our demodulation process. In this paper, we also conducted all the algorithms researched in detail.
在AIS基带信号的处理过程中，还需要帧头检测、频偏估计、符号定时算法的辅助，在论文中，对各种算法也进行了详细的研究。 - That is mixing the baseband signal ( linear frequency modulation signal and sinusoid signal) with two orthogonal local oscillated signal generated using direct digital synthetic technology to move the baseband signal to intermediate frequency band.
同样运用直接数字合成技术产生基带信号&线性调频信号和正弦信号，与本地载波混频后，将其频谱搬移到中频，完成数字上变频。 - Afterwards, the digital correction methods for the distortion of digital baseband generation circuits, the non-idealization of quadrature modulators and the errors of frequency multipliers are orderly studied by theoretical deductions and computer simulation verifications.
对数字基带产生电路失真、正交调制器非理想性和倍频系统误差的数字校正方法依次进行了深入的理论推导和分析，并作了计算机仿真验证。 - Over-sampling ADCs reduce quantization noise power in the baseband ( Especially when sampling frequency is greatly larger than baseband frequency), and improve the base-band signal to noise ratio, to increase the resolution of the converter.
过采样ADC通过过采样技术，将基带中的量化噪声功率降低（特别是当采样频率比基带频率大很多时），提高了基带内的信噪比，达到了增加转换器的有效量化位数的目的。 - The characteristic of the spreading spectrum signal and the selected features of the spreading sequence are analyzed. The mathematical model of the DSSS/ BPSK signal and the baseband signal models are established, and the characteristics of the time and frequency domain are analyzed. 2.
第一部分：盲参数估计1.分析了扩频信号的特征以及扩频序列的选取，建立了DSSS基带信号及DSSS/BPSK信号的数学模型，分析了DSSS/BPSK信号时域及频域特性。 - The scheme uses CORDIC algorithm to generate digital baseband Chirp signal, and then though orthogonal modulation and frequency multiplication to expand the signal bandwidth, which satisfies UWB communication requirement.
该方案利用CORDIC迭代运算产生数字基带线性调频信号，再通过正交调制和倍频技术拓展信号带宽，实现带宽满足UWB通信要求的Chirp-UWB信号。 - Digital communication technology includes digital baseband signal transmission, digital signal transmission frequency band, network and protocol, adaptive equalization, power spectrum estimation techniques.
数字通信技术主要包括数字基带信号传输、数字信号的频带传输、网络与协议、自适应均衡、功率谱估计等技术。 - Using a design of band-limited filter which can ensure normal safe operation of the baseband transmission system, at the same time which can reduces interference of the baseband signal on the high frequency carrier signal, thus optimizing the bandwidth of the MVB baseband transmission system. 2.
采用增加带限滤波器的设计方法，在确保基带传输系统正常安全运行的同时，降低基带信号对高频载波信号的干扰，优化了MVB基带传输系统的带宽。 - Modular design bases on top-down was adopted, the whole sending processor was divided into basic units, the baseband signal was modulated into digital intermediate frequency signal.
采用自顶向下的模块化设计方法，将整个发送处理器划分为基本单元，完成将基带信号调制为数字中频信号的功能。 - Hardware system design is to complete the baseband processor unit design of radar system, including choosing the A/ D converter, determining the DSP chip and its peripheral circuit operating frequency, connections of DSP and MCU.
硬件系统设计，完成对雷达测速仪基带处理单元的设计，包括A/D转换器的选择，确定DSP芯片及其外围电路的工作频率元器件的选择，硬件连接电路的设计，工作方式设置等。