frequency division modulation
英 [ˈfriːkwənsi dɪˈvɪʒn ˌmɒdjʊˈleɪʃən]
美 [ˈfriːkwənsi dɪˈvɪʒn ˌmɑdʒəˈleɪʃən]
分频调制，频率分多路调制
双语例句
- For the short length cyclic prefix based on orthogonal frequency division multiplex/ distributed Multitone modulation ( OFDM/ DMT) system, the relative signals were set up and parameters were introduced by short length cyclic prefix to establish the system model and eliminate the disturbance.
基于正交频分复用系统/离散多音调制系统（OFDM/DMT）的短长度循环前缀，设定相关信号并引入参数完成系统模型和干扰消除。 - 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。 - Orthogonal Frequency Division Multiplexing ( OFDM) Modulation Technology
正交频分复用（OFDM）调制技术 - Due to the low PAPR, single-carrier systems based on orthogonal frequency division multiplexing ( OFDM) modulation is a promising technique for the uplink of the 3GPP LTE.
在3GPPLTE的上行方案中，基于OFDM的单载波系统因为其PAPR比较低的优势，成为最有竞争力的备选方案。 - In this paper we firstly introduce the characteristic of the Wireless Local Area Network, analyze the function of OFDM ( Orthogonal Frequency division modulation) in the high data rate of Wireless Local Area Network.
本文首先介绍了无线局域网的特点，分析了OFDM（正交频分复用）技术在无线局域网中完成高速数据传输所起到的作用。 - According to the state of the art on digital radio broadcasting and trends on it, orthogonal frequency division modulation ( OFDM) is selected as in digital radio broadcasting system.
根据国内外关于数字广播的研究动态及技术的发展趋势，本文采用多载波技术作为数字广播系统的调制技术，而不考虑单载波方案。 - In this paper, lapped orthogonal transform ( LOT) is applied to orthogonal frequency division multiplexing ( OFDM) system for modulation and demodulation, and a new OFDM scheme is proposed.
本文将重叠正交变换（Lappedorthogonaltransform）用于正交频分复用（OFDM）系统的调制和解调，提出了新的OFDM实现方案； - 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。 - Multicarrier direct sequence code division multi-access ( DS-CDMA) is a combination of orthogonal frequency division multiplexing ( OFDM) modulation and code division multiaccess ( CDMA) multiple access schemes.
多载波直接扩频序列码分多址（DS-CDMA）是一种结合正交频分复用（OFDM）的调制方式和DS-CDMA的多址方式而产生的宽带CDMA传输方式。 - The simulation results showed that the bit error rate of DT-OFDM within various sub-carrier numbers were better than convolutional coded orthogonal frequency division multiplexing ( CC-OFDM) and Turbo coding modulation orthogonal frequency division multiplexing ( DT-OFDM).
仿真试验结果表明，不同子载波数的DT-OFDM误码率均低于传统的卷积编码正交频分复用（CC-OFDM）和网格编码正交频分复用（TCM-OFDM）。 - It additionally analyzes the measures to improve the frequency spectrum utilization ratio, such as orthogonal frequency division multiplexing ( OFDM), ultra wideband ( UWB), space-time modulation and coding, Ad hoc network and trans-layer network optimization.
探讨了提高频谱利用率的措施，如OFDM、UWB、空时调制编码、adhoc网络和网络跨层优化设计。 - The traditional carrier wave transmitter does not meet practical demands, while the COFDM ( Coded Orthogonal Frequency Division Multiplexing) modulation technique helps to realize high-speed data communication.
传统电力线载波机已经越来越不能满足实际的需要，而基于编码正交频分复用（COFDM）调制技术的载波机可实现高速数据通信。 - Regarding above 2 frequency division governor deflection, with the voltage and velocity modulation unifies to carry on supplementary, has analyzed the characteristic of the frequency conversion velocity modulation and the voltage and velocity modulation, it has realized the entire scope velocity modulation plan.
对于2分频以上的调速范围采用与调压调速相结合的方式进行互补，分析了变频调速与调压调速的特点，实现了全范围调速方案。 - There are two power/ signal frequency division composite modulations: PWM/ FSK modulation and PWM/ PSK modulation.
功率信号频分复合调制有两种基本方法：PWM/FSK调制和PWM/PSK调制。 - A visible light communication OFDM ( Orthogonal Frequency Division Multiplexing) modulation and demodulation simulation system has been built successfully, by adding complex channel coding and data interleaving module.
通过添加复杂的信道编码和数据交织等模块，成功搭建了一个可见光通信OFDM（正交频分复用）调制解调仿真系统。 - A number of technical measures have been used in LTE-Advanced systems to improve system performance, such as multi-antenna ( diversity, multiplexing, and beamforming) technique, orthogonal frequency division multiplexing, scheduling, pre-coding, power control technology, adaptive modulation and so on.
LTE-Advanced系统中使用了一些提高系统性能的技术措施，如多天线（分集、复用、波束成形）技术、正交频分复用，调度，预编码，功率控制技术，以及自适应调制技术等。 - OFDM system is orthogonal frequency division multiplexing system, it is a special multi-carrier modulation and demodulation system.
OFDM系统就是正交频分复用系统，它是一种特殊的多载波调制解调系统。 - Orthogonal Frequency Division Multiplexing ( OFDM) is a multi-carrier modulation technology, which has higher spectrum efficiency and better anti-multipath-fading ability. It has been widely used in the communication systems, and is one of key technologies of 4th generation mobile communication systems.
正交频分复用（OFDM）是一种具有高频谱利用率和抗多径衰落能力的多载波调制技术，在通信中得到广泛应用，是第四代移动通信中的核心技术之一。 - Orthogonal Frequency Division Multiplexing ( OFDM) is a popular multi-carriers modulation technique for achieving wireless environment, with its advantages of better anti-multipath ability and high spectral utilization.
正交频分复用（OrthogonalFrequencydivisionMultiplexing，OFDM）作为无线环境下的一种多载波调制技术，它具有良好的抗多径衰落性能和高效的频带利用率。 - Orthogonal frequency division multiplexing ( OFDM) is a promising technique which can be thought as a hybrid of multicarrier modulation ( MCM) and frequency shift keying ( FSK) modulation and it is the main candidate technology for the new generation communication system.
正交频分复用（OFDM）是一项很有前途的技术，可以看成是多载波调制（MCM）和频移键控（FSK）调制的结合，是新一代无线通信传输的主要候选技术。 - In recent years, OFDM ( Orthogonal Frequency Division Multiplexing)& a multi-carrier modulation technology, has gradually replaced Single-carrier Spread-spectrum technology ( e.g. CDMA) and become the core technology for the next generation mobile communication system.
近几年来，在宽带无线通信系统中，OFDM（正交频分复用）技术已经逐渐取代单载波扩频技术（如CDMA），成为下一代移动通信系统的核心技术。 - Orthogonal Frequency Division Multiplexing ( OFDM) Technology has become the preferred modulation technology in Broad Band Power Line Communication systems for its good anti-multipath performance and higher utilization of the frequency spectrum.
正交频分复用（OrthogonalFrequencydivisionMultiplexing，OFDM）技术由于拥有良好的抗多径干扰性能和较高的频谱利用率成为宽带电力线通信系统的首选调制技术。 - Orthogonal frequency division multiplexing modulation ( OFDM) technology use a number of parallel subcarriers to achieve high-speed data communications.
正交频分复用调制（OFDM）技术利用许多并行的子载波来实现高速的数据通信。 - The theme mainly focused on the problem how to apply Orthogonal Frequency Division Multiplexing modulation technology to the low-frequency elastic wave through-the-earth communication system which takes the layered earth for transmission medium.
本课题研究的是把正交频分复用调制技术应用在以分层大地为传输媒介的低频弹性波透地通信系统中。 - And the bus technology of the characteristics of power supply and signal complexing, some basic communication technology and orthogonal frequency division multiplexing technology with a variety of modulation methods has been briefly described.
对具有能、信合一特点的总线技术，一些基本的通信技术和具有多种调制方式的正交频分多路复用技术进行了简单的介绍。 - Orthogonal Frequency Division Multiplexing ( OFDM) is a digital multi-carrier modulation technique, which uses several parallel orthogonal sub-carriers to transmit/ receive a high data rate signal.
正交频分复用（OFDM）等多载波数字调制技术采用多路并行的正交子载波来发送/接收高速数据信号。 - Most researches focus on Orthogonal Frequency Division Multiplex ( OFDM), Wavelet Multi-carrier Modulation technique ( WT-OFDM) and the combination of multi-carrier modulation technology and CDMA.
其研究主要集中在正交频分复用技术（OFDM）、小波多载波调制技术（WT-OFDM）及多载波调制技术与CDMA技术的结合（MC-CDMA）。 - As an extension of OFDM technology, Orthogonal Frequency Division Modulation ( OFDMA) technology provides a very flexible air interface mode for cognitive radio scenario.
OFDMA技术是OFDM技术的一种扩展，OFDMA技术为认知无线电场景提供了一种非常灵活的空中接口方式。 - Recently, one of the research hotspots is introducing the Orthogonal Frequency Division Multiplexing ( OFDM) to fiber communication. Many works have been done, such as 300m MMF system using directly modulation and long-haul optical transmission system using SMF.
将正交频分复用（OFDM）技术应用于光纤通信领域是近年来研究热点之一，如采用直接探测的300mMMF系统研究，以及长距离单模光纤通信中的光OFDM技术等。 - Orthogonal Frequency Division Multiplexing ( OFDM) is winning an increasingly widespread application in wireless communication area as an multi-carrier modulation technique with high bandwidth efficiency, anti-interference ability, and it is suitable for high speed data transmission.
OFDM作为一种具有很高频带利用率的多载波调制技术，同时具有抗多径干扰能力、适合高速数据传输等优点，在无线通信领域得到越来越广泛的应用。