用于无线电传输时，信号用载波传送，通过改变(调制)载波的振幅、频率或间隔来实现。
FOR radio transmission, inFORmation is imparted to a carrier wave by varying (modulating) its amplitude, frequency, or duration.
介绍一种利用220伏同相电力线载波传送dtmf编码数据的系统中的通讯及控制电路的设计，它与数据采集电路及数据处理电路构成一个完整的系统。
The design of the communication and controlling circuit that transmits DTMF code in AC220 inphase power line is presented. It forms a complete system with data picking and processing circuit.
介绍提高载波机传送远动信号质量的几项有效措施。
The paper introduces some efficient ways for improvement the quality of remote signal transmitted by carrier wave.
调制是将要传送的信息装载到某一高频（载波）信号上去的过程。
Modulation is the process of loading the information to be delivered onto a certain(signal carrier) signal of high frequency.
数字电视信号的调制是用载波信号的某些离散状态来表征所传送的信息，在接收端只对载波信号的离散调制参量进行检测。
Digital TV signal modulation is a message transmitting method which is expressed by some discrete states in carrier wave. Only carrier wave modulating parameter is detected.
快速载波和位时钟恢复是突发模式传送系统的一个关键因素。
Rapid carrier and clock recovery is a key technique in burst mode transmission.
未调制载波首先传送到遮罩中心和顶部，与相应发射机的输出功率相适应。
The unmodulated carrier first transmits at the center of the mask, and the top of the mask adjusts to correspond with the output power of the transmitter.
文中给出了AOFDM中的平均每个子载波上一个符号能传送的比特数及误比特率与调制方式切换门限之间的函数关系式。
The close forms of the number of bits that per-sub-carrier-symbol can transmit and the Bit-Error-Probability (ber) are given as the functions of the switching thresholds.
在目前的OFDM系统中，在任何一个特定的时间，只有一个用户可以在所有副载波上进行传送；利用时分或者频分多路访问机制来支持多个用户。
In current OFDM systems, only a single user can transmit on all of the subcarriers at any given time, and time division or frequency division multiple access is employed to support multiple users.
电力线载波通信系统利用电力线来实现远程数据传送。
Carrier current systems use the power line mains to transfer information between remote locations.
然后，符号将会映射到副载波，并且经由天线传送。
Symbols are then mapped to subcarriers and transmitted via antennas.
发送端传送的数字信号在三种调制方式下均可很好的隐藏于混沌载波中，并在接收端得到正确恢复。
With the three encoding methods, the digital signals sent in transmitting part can be well hidden by chaotic carrier and recovered correctly in the receiver.
大气激光通信是指利用激光作为载波在空间直接进行语音、数据和图像信息传送的一种技术。
Atmosphere laser communication is the technique which usually using laser as the carrier directly transmits voice, data and image in the space.
大气激光通信是指利用激光作为载波在空间直接进行语音、数据和图像信息传送的一种技术。
Atmosphere laser communication is the technique which usually using laser as the carrier directly transmits voice, data and image in the space.
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