英语释义

1. a low-frequency carrier in an electronic system (such as a telemetering system or a multichannel radio system) used to modulate a main carrier and often being itself modulated to carry information

片语

subcarrier interference副载波干扰

local subcarrier本机副载波

subcarrier oscillator[电子]

subcarrier frequency副载频

intermediate subcarrier中间载波

used subcarrier已用子载波

pilot subcarrier导频副载波

SC subcarrier副载波

英汉例句

• progresses of millimeter wave subcarrier fiber communication technology(rof) for future generation mobile communication are summarized in this paper.

  综述了用于下一代移动通信的光纤毫米波副载波通信技术（rof）的研究进展。

• color synchronous signal is setup to resume subcarrier color signal as same frequency and phase in receive end, which is suppressed in send end.

  色同步信号是为了在接收端恢复与发送端被抑制掉的色副载波同频同相的载波而设置的。

• based on the theory of dpll, line phase locked and color subcarrier regeneration were designed.

  依据数字锁相环的基本原理，完成了行锁相、色副载波还原电路的设计。

• 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).

  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。

• taking color subcarrier as time base and disposing a single-chip microcomputer make the accuracy and stability of this meter very high and the auxiliary functions complete.

  该频率计采用彩电副载频作为内时基并引进了单片微机系统，因此有很高的频率稳定度及準确度，各种辅助功能强。

• in this paper, the fiber optic microwave subcarrier multiplexing video transmission system using the domestic photoelectric products is introduced.

  介绍一个采用国产光电器件研制的微波副载波复用光纤视频传输系统。

• the bit and subcarrier allocation problem in the multiuser ofdm sytem is a non-linear optimization problem.

  多用户ofdm系统的子载波和比特分配问题实质上就是一个非线性规划问题。

• in this paper, subcarrier pair selection and power allocation in broadband ofdm relaying system is addressed.

  该文研究宽带ofdm中继系统的最优中继子载波对选择和功率分配。

• the adaptive subcarrier cluster allocation algorithm.

  自适应子载波组分配算法。

• then, by use of multiple carrier system's frequency-sharing property and convex optimization, a subcarrier and power optimal allocation algorithm is proposed based on lagrangian duality theory.

  然后，运用凸优化技术分析了该资源分配问题，并基于拉格朗日对偶法给出了一种子载波和功率最优分配算法。

• simulation results show that subcarrier grouping just has a little influence on system performance. meanwhile the imperfect channel estimation has little effects on the present algorithm.

  模拟结果表明引入子载波分组后系统性能依然保持良好，并且信道估计偏差对本算法的影响较小。

• the reason to produce beat interference of color subcarrier and sound intercarrier is analyzed with the introduction of considerable items for design and testing methods.

  分析了彩色副载波和伴音内载波差拍干扰产生的原因、设计应考虑的问题以及测试方法。

• the transmitted signals which were modulated is a group of orthogonal sine signals as subcarrier and non-regular zero square waves that the code elements period is t as baseband coded formats.

  它所发送的信号是由一组正交的正弦信号作为副载波，用码元周期为t的不归零方波作为基带码型调制而成的。

• the time-domain differential signal detection technique is implemented by comparing the amplitude and the phase of the current ofdm sign subcarrier and the previous one.

  时域差分检测通过比较当前ofdm符号子载波与前一个符号对应子载波的幅度和相位来实现。

• the subcarrier generation circuit is very important constituent in the video process system.

  副载波产生电路是视频处理系统的重要组成部分。

• a dynamic subcarrier allocation algorithms based on grouped 「ratio-based selection」(rbs)is proposed.

  提出一种基于分组比例因子（rbs）改进的动态子载波分配算法。

• bit and subcarrier dynamic allocation technique is one of the key techniques in ofdm.

  比特和子载波动态分配技术是ofdm的关键技术之一。

• in this paper, a novel frequency ambiguity resolution algorithm in ofdm systems based on null subcarrier detection is proposed to correct the frequency ambiguity.

  该文针对频偏估计中所产生的模糊度问题提出了一种基于零子载波检测的频偏估计模糊度校正算法。

• the author studies and compares the pilot subcarrier estimation methods of ls, mmse and svd.

  在导频子载波的信道估计方法中，比较了ls，mmse，svd三种估计方法。

• its main tasks include sync signal abstracting, y/c separation, color subcarrier recovery, color demodulation and output format conversion.

  其主要任务为：电视同步信号提取、亮色分离、色度副载波恢复及色度解调、输出格式转换等。

• in the frequency domain pilot channel estimation, this thesis studies the pilot subcarrier and data subcarrier channel estimation algorithms.

  在基于频域导频的信道估计中，研究了导频子载波处的信道估计方法和数据子载波处的信道估计方法。

• the principle and method for calibrating the frequency by means of colour subcarrier signal of broadcast tv are introduced in detail, and the corresponding measurement accuracy is given in this paper.

  本文较详细介绍利用广播电视彩色付载频信号进行校频的原理和方法，并给出相应的测量精度。

• furthermore, we propose an adaptive subcarrier re-allocation algorithm for the ofdm-based system. the algorithm could allocate all subcarriers flexibly by the greatest extent.

  提出了基于ofdm系统的自适应子载波重分配算法，该算法能够最大程度地灵活分配所有子载波。

• subcarrier and power allocation is performed separately for non-real time users with the proportional rate constraints.

  对于非实时用户，按照数据率比例公平的要求，子载波和功率分配分离进行。

• an general analysis for front end performance of turned optical receiver for microwave subcarrier multiplexed lightwave system was presented. formulas for front end circuits were deduced.

  采用综合的分析方法从理论上分析了适合于微波副载波传输的谐振式光接收机前端的特性，提出了一整套计算公式。

• accompanied by the development of wideband communication networks, the interest in subcarrier multiplexed(scm)lightwave systems has been renewed.

  随着宽带光纤通信网的发展，副载波复用（scm）技术再次引起人们极大的兴趣并得到迅速发展。