A communicator USES BPSK direct - sequence (DS) spreading modulation and BPSK data modulation.
一个传达者使用BPSK指导序列(DS)传播调制和BPSK数据调制。
Then, this dissertation analyses the basic UWB waveform and compares two different data modulation schemes which adopting time-hopping modulation.
接着，在分析了基本的UWB波形的情况下，研究比较了采用跳时调制不同的数据调制方案。
The 4D means four data symbols (two bits), the PAM5 is Pulse Amplitude Modulation with five signal levels.
4D指四个数据符（2比特），PAM5表示分5个层级的脉冲幅度调制。
The audio data should be in a format understood by the headset (for example, A-law PCM [Pulse Code Modulation] format for the Sony headset).
音频数据应当是耳机可以理解的格式(例如，Sony耳机的a - law P CM [PulseCodemodulation]格式)。
The laser driver optimizes the characteristics of data streams and provides the adequate modulation current to the laser.
雷射驱动器将资料流的波形特性最佳化，并且提供适当的调变电流给雷射。
Adaptive coded modulation has become one of the key techniques in high speed wireless data communications.
自适应编码调制技术已成为高速无线数据通信的一项关键技术。
Meanwhile, modulation schemes for deep space communication are provided based on channel features and requirements on data transmission rates.
同时，根据信道特点和数据传输速率的要求给出了深空通信的调制方式。
Laser interferometer and grating of modulation light are used in the measuring system and the measuring data is processed by microcomputer.
该装置的测量系统采用了激光干涉仪和光调制光栅，并由微型机进行数据处理。
Error propagation caused by noise can be avoided by precoding the data at the transmitter prior to modulation and decoding operation of received signals.
在调制信号前采用数据预编码，对接收信号进行相应译码，以消除信道中噪声引起的差错传播。
Data communication systems that employ modulation techniques requiring good low-frequency response place unique demands on PLL-based frequency synthesizers.
使用调制技术的数据通信系统需要良好的低频响应，是对基于PLL频率合成器的数据通信系统的重要要求。
Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.
设计了统计直方图数据处理方案，按照正态分布的特性找出了寄生频率调制的标准偏差。
The high frequency modulation characteristics of GaAs-GaAlAs DH LBDs are analyzed and the results (data and curves) presented.
分析了器件的两种高频调制特性，给出了测量结果——数据和曲线。
In this article, a control system software is designed using digital PID algorithm, which realize real-time control, dynamic display, data record, parameter modulation and malfunction alert etc.
本文应用数字PID控制算法设计了控制系统的软件，实现了实时控制、动态显示、数据记录、参数调整以及故障报警等控制功能。
Multilevel laser power modulation is a key technology in multilevel optical data storage systems based on photochromism.
多阶激光功率调制是光致变色多阶光数据存储的一项核心技术。
The modulation types of data link for UAV are simple, such as BPSK, 2FSK , direct spread spectrum. The transmitted rate and anti-interference performance of them are limited.
目前，无人机数据链系统采用的调制模式都比较简单，如2FSK、BPSK、直接扩频技术等，传输速率与抗干扰能力有限。
Data bits are allocated to the channels through a highly efficient modulation technique that converts digital data to electrical signal pulses.
数据通过一种高效的调制技术(即把数字数据变成电信号脉冲)分配给各个信道。
In order to accomplish the data process and conversion, the clock generation circuit, 100% modulation signal and 10% signal demodulation circuit are designed.
为了完成数据的处理和交换，分别设计了时钟产生电路、100%调制信号和10%调制信号的解调电路。
Adaptive modulation and coding (AMC) can effectively improve the spectral efficiency for wireless data transmissions.
自适应编码调制(amc)技术可以有效地提高无线数据传输的频谱利用率。
It USES the 1200 baud Bell 202 tone modulation and the first bit of data is transferred after receiving the first ring tone.
它使用1200波特率贝尔202音频调制和第一位元的资料传送接收后首铃声。
OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission.
正交频分复用(OFDM)是一种新型调制技术，特别适合在多径传播的无线移动信道中高速传输数据。
A data aided symbol timing estimation algorithm was proposed for burst-mode space-time trellis coded multi-level continuous phase modulation (STTC-MCPM) systems in Rayleigh fading channels.
针对瑞利衰落信道中突发模式的空时网格编码的多电平连续相位调制(STTC - MCPM)系统，提出了一种基于数据辅助的符号定时估计算法。
On the other hand, adaptive modulation technique can enhance data rate, spectrum efficiency and transmission reliability in MIMO-OFDM systems.
另一方面，对于MIMO - OFDM系统来说，自适应调制技术可以提高系统的数据传输率、频谱效率以及传输的可靠性。
Mud pulse modulation data flow is thin, but current transmitter as far distance transmission means has been widely applied other field, technology is mature.
泥浆脉冲方法目前应用较多，但数据流量稀疏，电流环技术作为远距离传输手段已被广泛的应用于其它领域，技术成熟。
In an ADSL system, transmitted data are organized and overhead data are inserted to form the frame and superframe before the process of modulation.
在ADSL(非对称数字用户线)系统中，传输的数据在进行调制以前，需先进行组织并加入开销数据后形成帧和复帧。
Because high-speed data take up wide bandwidth, looking for one which have high efficiency modulation scheme and suitable for frequency hopping communication system is needed.
由于高速数据占用更宽的带宽，所以在调制制式上应该寻找一种适合于跳频通信特点的具有高频谱效率的调制方案。
Modem signals will be transferred through the VHF communications system has a second modulation, through VHF communication system access to data communications.
调制解调器的已调信号通过VHF通信系统进行二次调制，通过VHF通信系统的信道实现数据通信。
According to the modulation theory of GMSK, the input data are simulated. On the top of simulation, signal graph and phase-path of the GMSK are painted.
根据GMSK的调制理论，对输入数据进行GMSK调制仿真，得出GMSK调制信号波形以及相位路径图。
Methods and apparatus are provided for modulation coding a stream of binary input data.
本发明提供了用于调制编码二进制输入数据流的方法及装置。
Methods and apparatus are provided for modulation coding a stream of binary input data.
本发明提供了用于调制编码二进制输入数据流的方法及装置。
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