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frequency division date link 频率分割数据传输装置
The design method of a kind of wideband HF date modem based on orthogonal frequency division multiplexing (OFDM) is introduced. 介绍了一种基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的宽带短波数据调制解调器的设计方案。
Use of one channel for several messages by timedivision multiplex or frequency division. 通过时分或频分多路复用的方法,用单个信道传输多个报文。
On the condition of the UAS' operation, the ability of information transmission and security of date link scheme will be improved. 该设计方案以无人机作战使用实际为基础，极大地提高信息传输能力和信息安全性。
FDDL Frequency Division Data Link 频率分开的数据链路,频分数据链路
From Release 1.2 onwards MU886 will also be able to operate in Frequency Division Duplexing (FDD) mode. 从版本1.;2起，MU886还能按分频双工（FDD）的模式运行。
The advantages, principles and application methods of its frequency division and M/T measurement of speed are provided. 车用油耗器设计中测量电路的设计是关键技术,重点介绍了分频技术和M/T测速技术的优点、原理和在设计中的应用方法。
The orthogonal frequency division multiplexing (OFDM) is outlined and the error rate is analysed. 著重分析了正交多载波调制(OFDM)技术的原理及在电力线信道下的误码性能。
Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation method. 正交频分多路复用是一种多载波调制技术。
ADSL transmission equipment vendors use either frequency division multiplexing or echo cancellation to achieve this huge gain in throughput. ADSL传输设备供应商不是利用频分多路复用，就是利用回波消除，以获得吞吐量有大幅度的提高。
DRM has become to a international standard of AM broadcast. It modulate by COFDM(Coded Orthogonal Frequency Division Multiplex) technology. DRM数字调幅广播已经成为国际标准，它使用COFDM(Coded Orthogonal Frequency Division Multiplex)调制技术。
Orthogonal Frequency Division Multiple Access (OFDMA) gains an increasing attention for broadband wireless access (BWA) system. OFDMA在BWA系统中得到越来越多的应用。
The research on future date link-- common date link 面向未来的数据链--通用数据链研究
Why DSL can be called a wide band technology is because it exploits OFDM which represents Orthogonal Frequency Division Multiplexing. DSL技术之所以能够被称为宽带技术,主要是由于它的复用方式是OFDM。
The Multi-Carrier CDMA (MC-CDMA) system combines the advantages of orthogonal frequency division multiplexing (OFDM) system with that of CDMA system. Multi-CarrierCDMA(MC -CDMA)系统结合了正交频分复用 (OFDM)系统和码分多址 (CDMA)系统的优点 ,能比传统CDMA系统提供更高的用户容量 ,因而在 3G中受到了广泛的关注。
The peak-to-average power ratio of orthogonal frequency division multiplexing(OFDM systems is reduced with an improved constellation extension scheme. 为降低正交频分复用(OFDM)信号的峰均功率比,提出了改进的星座图扩展方法。
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A multicell adaptive resource allocation(MARA) scheme was proposed for downlink orthogonal frequency division multiple access(OFDMA) cellular system. 提出了一种用于正交频分多址通信系统下行链路的多小区自适应资源分配算法(MARA)。
A new symbol timing and carrier frequency synchronization scheme applicable to orthogonal frequency division multiplexing(OFDM) system was presented. 针对正交频分复用(OFDM)系统提出了一种新的符号定时和载波频率同步算法。
Orthogonal Frequency Division Multiplexing (OFDM) has high spectrum efficiency and capability to mitigate the side-effect of multipath propagation. 正交频分复用(OFDM)技术由于具有较高的频谱效率,而且可以有效地对抗多径传输,已成为高速数据传输的关键技术。

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