modulation bandwidth的例句大全

Finite element method is used to analyze the performance ( e.g.microwave effective refractive index, modulation bandwidth, and characteristic impedance) of the novel modulator with ACPS or SCPS electrodes.

利用有限元法对非对称共面带线（ACPS）和对称共面带线（SCPS）两种电极的光纤型调制器微波等效折射率、调制带宽和特性阻抗进行分析。

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The results show that the SQW LD has good temperature property and wide modulation bandwidth.

结果表明它具有较好的温度特性和较大调制带宽。

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It has the advantages of fine frequency resolution, short frequency conversion time, wide modulation bandwidth and controlling facility, and has capability of generating the different waveforms.

它具有频率分辨率高（可达uHz）、频率转换时间短（可达ns）、输出频率带宽很宽、程控灵活等优点，并具有产生多种常用波形的能力。

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this thesis analyzes a number of key technologies of the white led communication system, more in-depth study on the performance of commercial white led light source, including led volt-ampere characteristic, the characteristics of the illumination and modulation bandwidth characteristics.

本文在分析了白光LED通信系统的若干关键技术基础上，对商用白光LED的光源性能进行了较为深入的研究，内容包括LED的伏安特性、光照度特性和调制带宽特性。

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this technique is elegant and proves to be an easier way than direct measurement of optical modulation bandwidth .

这个方法比直接透过光学量测调变频宽更为方便。

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the current modulation bandwidth of micro-cavity semiconductor lasers versus the active volume is analyzed.

主要讨论了微腔半导体激光器电流调制带宽随有源区体积的变化规律。

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influence of active volume on the current modulation bandwidth of micro-cavity semiconductor lasers

有源区体积对微腔半导体激光器电流调制带宽的影响

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due to that hspa+ has already adopt mimo and high order modulation technology to improve the spectral efficiency, it is preferred to further improve the peak data rate by increasing the system bandwidth.

由于HSPA+已经采用了MIMO和高阶调制等先进技术以提高频谱效率，所以提升系统带宽成为提高峰值数据速率自然而然的首选方案。

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its anti-noise jamming performance can be improved by increasing modulation period and signal bandwidth;

增加调制周期和信号带宽可提高引信抗噪声干扰能力；

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to resolve the difficulty of fair packet scheduling caused by bandwidth uneven distribution with time slot ( budts) in adaptive modulation wireless system, a novel fair packet scheduling algorithm, maximum rate scheduling with fairness constraint ( mrsfc), was proposed.

针对自适应传输系统中带宽随时隙不均匀分布（BUDTS）造成无线分组调度算法难以保证公平性的问题，提出了一种公平约束最大速率调度（MRSFC）算法。

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Orthogonal frequency division multiplexing ( OFDM ) is a bandwidth-efficient modulation scheme with robustness to frequency selective fading.

正交频分复用 ( OFDM ) 具有良好的抗频率选择性衰落性能和充分的带宽利用率.

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as a new bandwidth-efficient coded modulation scheme, turbo trellis-coded-modulation ( ttcm) has recently received much attention in channel coding of digital communication systems due to its near capacity performance and high bandwidth-efficiency.

Turbo网格编码调制技术（TTCM）在数字通信系统中引起人们浓厚的兴趣，因为这种将编码和调制结合在一起的新技术不仅有高的差错纠正能力，而且还具有很高的带宽利用率。

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when service flow reaches the certain threshold, the higher order modulation is adopted to compress the service bandwidth on condition that the quality of service is guaranteed.

在网络业务量到达特定阈值的时候，在保证服务质量（QoS）的前提下采用高阶调制方式进行频带压缩从而实现带宽调度。

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Trellis Coded Modulation ( TCM) has been widely used because it can obtain 2. 55~ 7. 37 dB coding gain without bandwidth expansion or reduction of the effective information rates.

由于格状编码调制（TCM）可以在相同的频带利用率下使信号得到2.55～7.37dB的编码增益，所以得到了广泛的应用。

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Trellis-Coded Modulation ( TCM) is an advanced combined coding and modulation technique evolved in recent years. In TCM, significant coding gains can be obtained without bandwidth expansion or reduction of transmission rate.

网格编码调制（TCM）是近年来提出的一种先进的组合编码调制技术，在不降低信息传输率、不扩展占用频带的前提下，它能获得可观的编码增益。

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XDSL have been considered the one of the technologies which have the good fortune and feasibility in recent years. xDSL systems are built upon the existing twisted-pair telephone subscriber loop plant and can provide different bandwidth by different modulation technologies, so different transmission rates are fulfilled.

xDSL技术被看作近年来最具发展前途和可行性的主流技术之一，xDSL是以现有的入户铜绞线为介质基础，通过不同的调制方式提供不同的带宽，从而实现不同速度的网络用户接入技术。

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Pseudo-chaotic time hopping is a modulation method which is suitable for ultra wide-bandwidth impulse radio communication systems.

伪混沌跳时是一种适用于超宽带脉冲无线电通信系统的调制方法。

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To increase the effectively transmitted bandwidth, digital multiplex channel modulation is employed to implement SSB modulation.

为了提高载波机的有效传输带宽, 可采用多路数字韦瓦复调制的原理来实现载波机的单边带调制.

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This paper describes a pulse compressor implementation with DSP for small Time Bandwidth ( TB) product Linear Frequency Modulation ( LFM) waveform.

用DSP实现小TB积线性调频数字脉压，线性调频信号用数字方法产生。

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Simulation results show that: under the condition that the occupied bandwidth and the information rate are equal, the anti-noise performance of the communication system based on chaos M-ary modulation and demodulation method can achieve the theoretical limit of the ideal incoherent OOK receiver.

结果显示：在带宽和码元速率相同的情况下，混沌振子多进制调制解调通信系统的误码率性能能够达到传统非相干OOK接收机的理论极限。

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