传输带宽 transmission bandwidth(76) 没有找到相关双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   transmission bandwidth The reflection and transmission bandwidth of the high reflectance zone is presented. 例句来源       It is proved that the attenuation of an acoustic wave brings about a decrease in the diffraction efficiency and an increase in the transmission bandwidth of the device used. 例句来源       It is shown that electronic restructuring of not only the central transmission frequency but also the transmission bandwidth of the filter as well as the form of the transmission curve is possible in collinear acousto-optic filters. 例句来源       We show a significant improvement in both the transmission efficiency (up to 97%) and the transmission bandwidth by performing an optimization based on a sensitivity analysis. 例句来源       The shortages of storage capacity and transmission bandwidth make efficient compression solutions essential. 例句来源       更多                    The design essentials of high bit-rate long-wavelength PIN-FET hybrid optical preamplifier have been discussed in detail by analyzing its features operated under high bit-rate condition. The emphasis is laid on the influence of the parameters of the active devices(PIN photodiode, MESFET) on the circuit noise, transmission bandwidth and reception sensitivity of the preamplifier. Meamwhile, the associated formulae and results are also given. A criterion of selecting the active devices has been proposed based ...             通过对PIN-FET光接收低噪声前端在高速工作状态下的特点分析,详细讨论了使用InGaAs光电PIN二极管与GaAs MESFET的高速长波长PIN-FET光接收集成前端的设计要点。着重探讨了有源器件(PIN光电管、低噪声MESFET)的性能对前端的电路噪声、传输带宽与光接收灵敏度的影响,给出了相应的计算方法与计算结果。在对MESFET噪声机制的分析与实验对比的基础上,提出了旨在降低1/f噪声的器件选择条件,较好地解决了PIN-FET研制中控制1/f噪声的问题。介绍了采用低寄生参数的光纤耦合结构、芯片钝化以及低温低应力引线等工艺措施的光电混合集成工艺。研制的前端其光谱响应范围0.9～1.7μm;最大光电响应度10.8×10~3V/W,光学3dB带宽255MHz;噪声等效功率1.2×10~(-12)W/√Hz。该前端已成功地用于1.3μm、140Mb/s单模与多模光纤系统,光接收灵敏度-39dBm;并试用于400Mb/s高速系统。 文摘来源          The circuit scheme of 64 QAM Multi Level Coded Modulation used for SDH microwave             给出了用于SDH微波传输的多级编码64QAM(64 QAM MLCM)电路方案。这种方案利用了TCM的基本思路,即将卷积编码与符号集分割相结合,但是避免了其冗余度高、解调译码电路不易实现等问题。此方案可以采用通用型维特比译码器实现,并在传输带宽基本不变的条件下,取得3dB的编码增益。 文摘来源          The circuit scheme for demodulating the 64QAM Trellis Coded Modulation(TCM) signal by a chip of Viterbi decoder is presented in this paper. Making use of this method, the difficulty could be avoided for realizing a 64QAM TCM demodulation circuit, and 3dB coding gain could be obtained under the condition of maintaining the transmission bandwidth almost to be unchanged.             本文给出利用单片维特比译码器实现 64QAM格栅编码调制 (TCM)解调电路的方案。采用这种方法可以避免 64QAM TCM解调电路难以实现的困难 ,在传输带宽保持基本不变的条件下 ,可以取得 3d B的编码增益。 文摘来源   << 更多相关文摘         相关查询: 带宽传输 中继传输带宽 压缩带宽传输 带宽有效传输 信息传输带宽 带宽 传输 主干网数据传输带宽 传输语言 言语传输 小波传输 带宽测量的  对查询结果不满意

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