frequency channel的例句大全

several thouhgts of nation frequency channel establishment in western minority nationality area

西部少数民族地区设立民族频道的几点思考

The analysis and treatment of special breakdown of whole frequency channel CATV

全频道CATV特殊故障分析及处理

The AGC technology in the radio frequency channel is also studied.

研究了射频信道中的自动增益控制(AGC)技术.

Each reader operates in a particular frequency channel of the authorised 2.45 GHz ISM band.

每一台感应读卡机都必须在不同的频道下运作,不能有任何两台感应读卡机使用相同频道.

Foreground of the Television Emission Antenna Shared by Multiple Frequency Channel

电视发射天线多频道共用的前景

Research and Development of Full Frequency Channel Pager

全频道无线寻呼接收机的研制

The experience is useful for system short of frequency channel and needs relay station.

对于无线频点资源有限和需要中继站的负控系统有一定的现实意义。

vfc? voice frequency channel?

音频信道？。

To Remove Influence of the Harmonic on Mains Frequency Channel Melting Zinc Induction Furnace

消除谐波对工频有心熔锌感应炉的影响

The identical time interval, the different frequency channel replaces, often several talk shows also are broadcasting.

同一时段, 不同频道扫视一圈下来, 往往几个谈话节目在同时播放.

Some of the laboratory report data mainly comes from the test engineer to electromagnetic compatible rf test data, is mainly to the specific channel and frequency band on test.

实验室的一些报告数据主要来自于测试工程师对电磁兼容射频测试的数据，主要是对特定的通道和频段进行测试。

In this dissertation, the estimation algorithms of time-varying frequency selective channel in modern wireless communication systems including WCDMA uplink, WCDMA downlink with space time transmit diversity and MIMO system are investigated.

本文主要研究在现代无线移动通信系统中如何估计同时存在频率选择性和时间选择性衰落的信道，包括WCDMA上行链路，采用双天线空时发射分集的WCDMA下行链路和MIMO系统。

We classify these existing channel estimation algorithms into two categories: frequency domain processing methods and time domain processing methods, and make detailed analysis and comparison between them.

我们将基于频域导频的信道估计算法分为频域估计算法和时域估计算法两类，对它们各自的技术优点和缺陷进行了分析和比较。

Space time coded modulation has been shown to efficiently use transmits diversity in Raleigh fading channel. Then, the investigation indicates that decreasing the amounts of subbands, and utilizing the diversity characteristic adequately in frequency domain of OFDM is an effective approach to reduce the performance degradation.

文中接着通过研究表明，在子带自适应编码调制中，减少选取子带的个数，充分利用OFDM频域上的分集特性是一种可以降低信道时变带来性能恶化的有效途径。

A subspace-based blind channel estimator has been developed for space time coding orthogonal frequency division multiplexing ( STC-OFDM) system with two transmit antennas and two receive antennas.

针对使用2个发射天线和2个接收天线并且采用循环前缀的空时编码正交频分复用系统（STC-OFDM），提出了一种信道盲估计算法，并给出信道可被辨识的条件。

In addition, the paper gives the effects of mobile terminal speed 、 data transmission rate 、 ground evironment and carrier frequency on the channel transmission efficiency.

对移动终端的速度、数据传输速率、地面环境及载波频率对信道传输效率的影响作了探讨。

For the requirements of the signal-to-noise ratio of lower in part of telephone channel the algorithm to convergence in the time domain and frequency domain step by step.

针对部分线路上语音信噪比较低的实际，引入谱熵进行分级检测，将算法在时域和频域逐级进行收敛。

Real time Monitoring Channel ′ s Error rate in Shortwave for Frequency Hopping System

短波跳频系统信道差错率的实时监测

Low voltage power line is a time-varying system of complex network structure, whose hostile channel properties such as very low impedance, instability channel frequency, strong noise pollution, attenuation and time-variance must be considered.

低压电力线是网络结构复杂的时变系统，其信道表现出阻抗变化大、信道频率特性不稳定、信号所受干扰强和时变性大等特点。

We propose new carrier frequency acquisition and channel estimation algorithms based on the time-domain analysis of OFDM system.

本文根据OFDM系统特点，分析了OFDM系统的时域载波频率捕获和信道估计方法。