您要查找的是不是:
- The OFDM(Orthogonal Frequency Division Multiplexing) multi-carrier modulation is used to process messages instead of the traditional single carrier modulation. 提出利用正交频分复用(OFDM)多载波调制方式代替单载波调制方式对信息进行处理。
- Matching error causes spectral distortion and degradation in processing of remote sensing images fusion with IHS method.Wavelet decomposition has properties of frequency division in transform domain. 遥感影像的IHS融合方法由于匹配误差导致光谱畸变和退化,而小波变换在变换域具有良好的分频特性,小波系数的统计特性反映了遥感影像的边缘、线和区域等显著特征。
- frequency divisional processing 分频处理
- This is the very divisive process of thought. 这正是思想导致分裂的过程。
- UMTS assigns separate carrier frequencies to incoming and outbound signals, a process called frequency division duplexing (FDD). UMTS分配给营运商不同的频率,用于输入和输出信号,这个过程叫频分双工(FDD)。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- In 1999, the division processed 2 363 equipment registration applications, inspected 6 519 factories and 5 098 items of pressure equipment, and issued 336 certificates of competency and endorsements. 一九九九年,锅炉及压力容器科共处理2363宗压力器登记申请,巡查6519家工厂、检验5098具压力器,以及发出和批署336份合格证书。