频带

正交频分复用技术（OFDM）将一个宽的频带划分为若干比较窄的子带。

Orthogonal frequency-division multiplexing ( OFDM ) splits a wide frequency band into a bank of narrow sub-bands .

在DS-CDMA系统中，许多用户占用同一个频带进行通信。

In DS-CDMA system , a number of users share a common frequency band .

初始服务需要10兆赫宽的频带。

For an initial service , a 10 megahertz-wide band of frequencies will be needed .

手机多频带切换力推RFMEMS开关发展

Multi-Frequency Band Switch Advances the Development of RF MEMS Switches

结与微波的耦合采用磁耦合方式，微波工作频率为x频带。

The magnetic coupling between the junction and the applied microwave was used in X band waveguide .

前馈有源噪声控制（activenoisecontrol，ANC）方法可在较宽的频带有效。

The feedforward ANC ( Active Noise Control ) is effective to attenuate wide-band acoustic noise , and therefore has wide applications .

为了克服这一性能差距，提出了一种有效的基于多频带UWB系统的差分编译码方案。

To overcome the gap , an effective differential encoding and decoding scheme for multiband UWB systems is proposed .

根据这个理论模型，本文着重研究了太阳射电毫秒Spike辐射的频带宽度问题。

On the basis of the above model , we have emphatically studied the bandwidth of the solar radio millisecond spike radiation .

在FDMA/TDMA蜂窝系统中，用户容量是频带受限的。在CDMA蜂窝系统中，用户容量是干扰受限的。

The user capacity in FDMA / TDMA cellular system is frequency limited , while in CDMA cellular system , it is interference limited .

为了避免对频带内现存的无线电系统造成干扰，在进行脉冲波形设计时必须对UWB脉冲波形提出一些要求。

To avoid interference with the existing radio systems in the band , there are some requirements for UWB pulse waveforms design .

利用目前CATV网络的闲置频带和覆盖面广的优势，通过CATV网络接入Internet是一种有效的方法。

It is effective method that Internet is accessed with CATV networks since today 's CATV network has large unused spectrum and advantage of wide cover .

在这一频带上，海冰面积变化的热力强迫作用可分别激发出EU和EA大气遥相关型。

At this frequency band EU and EA teleconnection patterns can be excited by the thermal forcing of the variation of the sea ice cover .

两组对照组豚鼠不经声预处理，分别直接暴露在中心频率0.5KHz和1KHz110dB的信频带噪声下，暴露1h。

Two control groups received 0.5 kHz and 1 kHz OBN respectively at 110 dB for 1 h without prior sound conditioning .

超宽带是高速无线通信的新技术，然而其较大的带宽会落入GPS频带范围内，造成对GPS信号的干扰。

Ultrawideband is a new technology in high speed wireless communication , but the band ′ s width will fall into the frequence range of GPS , cause interference to GPS signal .

文章的最后，给出了由FPGA构成的中频发射机的频带实测性能，同步性能分析及DSP与FPGA接口的测试分析，并提出了改进和完善的建议。

Finally it presented the measured performance of IF transmitter on FPGA and the performance analysis of synchronization and interface between DSP and FPGA , as well as some improvement suggestion .

该技术采用样条差分均值，进行准周期预测特征检测，获得高的QRS检出率，对QRS实施优化次数的平滑插值，有效地压缩了ECG频带，提高了递归DCT压缩ECG数据序列的效率。

The frequency band of QRS is efficiently compressed with approximate optimal interpolation times . The efficiency of recursive DCT is improved with the technique .

“内外结合、综合治理”解决中小企业融资难问题综合基追踪和AR模型内插的多频带数据融合

A Solution to the Financing of Chinese SMEs : Overall Governance with Concerted Efforts Inside and Outside ; Multi-band Data Fusion Combining Basis Pursuit and AR Model Interpolation

目的观察高频电灼术联合抗生素凝胶灌注治疗泪道不同部位阻塞的效果。HRV的频谱主要包括三个频带：（）高频（HF入u）中频（MF）；

Objective To study the therapeutic effects of high frequency electric cauterization combined with perfusion of antibiotic gel on obstructive diseases of the lacrimal passage .

GaN基微波功率放大器工作电压高、输出功率高、频带宽、损耗小，应用非常广泛。

GaN-based microwave power amplifiers have high voltage , high output power , frequency bandwidth , low loss . So they have wide range of applications .

未来无线通信系统需要在保证业务服务质量（QoS）的同时，在有限的频带内提供更高的数据速率和频谱效率。

Future wireless communication systems face the great challenges of providing higher data rates and spectral efficiency with the limited frequency bandwidth , while guaranteeing quality of service ( QoS ) .

本文介绍采用Intel2920信号处理器实现DTMF接收器中的频带分离滤波器。

This paper deals with band separation filters in DTMF receiver implemented with Intel 2920 signal processor .

用一种简便方法分析研究了使用三角形铁氧体柱的H面Y结波导环行器，理论分析结果与实验结果吻合良好，所论环行器插入损耗低，频带却宽。

An H-Plane waveguide U-junction circulator with a trangular ferrite post is analyzed using a simple method . The circulator exhibits a low insertion loss and a wide bandwidth . Experimental results were coincident with the theory .

在DS/CDMA通信系统中，共用一个频带的多用户信号会产生多址干扰（MAI）。

In DS / CDMA communication system , users share time and frequency resourses , it will cause Multiple Access Interference ( MAI ) .

而正交频分复用（OrthogonalFrequencydivisionMultiplexing，OFDM）技术以其频带利用率高、抗多径能力强、适合高速数据传输等优点在通信领域得到越来越广泛的应用。

Orthogonal Frequency Division Multiplexing ( OFDM ), which has the advantages of the high bandwidth utilization , the anti-multipath capability and the high-speed data transmission , has been widely used in the communication field .

研究结果表明，本系统的频带利用率和计算复杂度均优于传统的M元MC-CDMA系统。

The results show that the proposed scheme has better bandwidth efficiency and lower computation complexity than traditional M-ary MC-CDMA systems .

通过对CT图像和MRI图像实现图像融合并对融合后的图像进行定量评价，表明在多尺度小波变换的各种融合算法中，基于小波系数频带方向最大值融合算法能提供更好的可视性和清晰度。

By fusing the CT and MRI image , quantitatively evaluating the fusion image , it shows that in many algorithms of Wavelet multi-resolution transform , the max-value of frequency domain algorithm can provide better visibility and clarity .

另外，还提出了一种新的权函数的选择方法用以解决H∞控制器设计中存在的和对象的频带几乎一致的随机海浪干扰抑制问题。

In addition , a new method for selecting the weighting function is proposed for suppression of the random sea wave disturbance with the almost similar frequency band to the controller object in the design of H ∞ controller .

MIMO（Multiple-inputMultiple–Output，多输入多输出）是一种不需要损失频带和发射功率资源就能提供前所未有的数据传输速率的技术，属于无线通信系统中的重要突破。

As a tremendous breakthrough in wireless communication system , MIMO ( Multiple-Input Multiple – Output ) is a technique which can supply unbelievable high data rate , without losing spectrum bandwidth and power of transmission .

为解决光纤陀螺全频带频率响应测试问题，提出了基于光纤陀螺Faraday效应的频率响应测试原理。

A testing principle was developed for whole frequency band response testing problems in fiber optic gyroscopes based on the magneto-optic Faraday effect of the gyroscope .

因此脉冲成形技术不仅能对传输信号进行频谱成形来提高系统的频带利用率，而且还可以减小信号的PAPR值。

Thus pulse shaping technique can be used not only shape the spectrum of the transmitted signal to increase the bandwidth efficiency but also to reduce its PAPR .