本文对BPS K信号调制格式下的香农限进行了理论分析和数值求解。
This paper gives the Shannon limit analysis and numerical results while the modulation is BPSK.
在超长距离传输时，信号调制格式是可提高系统传输性能的一项关键技术。
Modulation format of signal has become a key technique to enhance the transmission capability of system in the long-distance system.
先进的信号调制格式将提高系统的色散、非线性容限，延长系统传输距离。
Advanced formats will enhance the limitation of dispersion and nonlinearity, and prolong the transmission distance.
功率放大器（12）具有分别用于这两 种调制格式的固定增益模式和可变增益模式。
The power amplifier (12) has a fixed gain mode and a variable gain mode used for the two modulation formats, respectively.
尤其对用数字方法恢复单一载波调制格式中的光相位和偏振的接收机端的先进算法进行了详细的讨论和分析。
The principle of several digital phase and polarization tracking algorithms recently proposed and demonstrated for future spectrally-efficient optical transmission system are discussed in detail.
基于硅光波导的四波混频(FWM)和交叉相位调制(XPM)效应，提出非归零码(NRZ)到归零码(RZ)的光调制格式转换。
A format conversion from a non-return-to-zero (NRZ) signal to return-to-zero (RZ) signal is presented based on four-wave mixing (FWM) and cross-phase modulation (XPM) in a silicon optical waveguide.
第三，对采用不同调制格式（包括幅移键控和二进制相移键控）的光副载波复用（OSCM）系统中，PMD引起的功率代价进行了量化。
Thirdly, we quantify the power penalty caused by the PMD in optical subcarrier multiplexing (OSCM) system with amplitude shift keying (ASK) and binary phase shift keying (BPSK).
最初只使用三种格式：“调制解调器质量”（28.8Kb/s）、“宽带质量”（约 100 Kb/s）和“渐进下载”格式来提供视频片段。
Videoclips were initially offered using only three formats: "modem quality" (28.8 Kbits/sec); "broadband quality" (about 100 Kbits/sec); and a "progressive download" format.
接着详细地介绍了北斗卫星的信号体制，对其调制解调方式作了深入地研究，对电文格式作了说明。
After that, the article introduces the signal system as well as modulation and demodulation of Beidou satellite, next, explain the telegram form elaborately.
根据光学传递函数、调制度和空间频率视觉及对物象的感知程度，制作TIFF格式透视灰度图。
According to optical transfer function, degree of modulation and apperceive degree of space frequency vision vs object image, TIFF grayscale scenograph is made.
根据光学传递函数、调制度和空间频率视觉及对物象的感知程度，制作TIFF格式透视灰度图。
According to optical transfer function, degree of modulation and apperceive degree of space frequency vision vs object image, TIFF grayscale scenograph is made.
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