它是一种多载波调制技术，同时也是一种复用技术。
It is a type of multi-carrier modulation and a technology of multiplex.
中文含义为正交频分复用，它是一种多载波调制技术。
Orthogonal frequency-division multiplexing (OFDM) is an attractive transmission technique for high-bit-rate communication systems.
根据OFDM技术的原理，多载波调制技术具有良好的抗多径效应能力。
Based on the principle of the OFDM technology, the multi-carriers modulation has strong abilities in counteracting the multi-path response.
一般多载波调制技术的主要特性是将一定宽频信道分解成为一组多个窄频信道。
The term multicarrier modulation includes a number of transmission schemes whose main characteristic is the decomposition of any wideband channel into a set of independent narrowband channels.
以正交频分复用(OFDM)为代表的多载波调制技术被证明是最有前途的方案之一。
Orthogonal frequency division multiplexing (OFDM) as the representative of the multi-carrier modulation technique proved to be one of the most promising.
OFDM系统自身的正交多载波调制特点，决定了其对定时误差和载波频率偏差十分敏感。
The orthogonal multicarrier modulation, which is the main character of OFDM, determines that it is very sensitive to both timing synchronization error and carrier frequency offset.
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。
The OFDM (Orthogonal Frequency Division Multiplexing) multi-carrier modulation is used to process messages instead of the traditional single carrier modulation.
并对两种多载波调制技术中应用较为广泛的时域均衡器训练算法在水声环境下进行了比较。
And two kinds of training algorithm of equalizer in time domain which are used widely in multi-carrier modulation technique were compared in the underwater acoustic environment.
梁德群教授提出了非正交多重调制技术（NMT），是一种多载波调制方式，它突破了正交性限制。
Professor Liang Dequn invented non-orthogonal multi-modulation technique (NMT), which is a multi-carrier modulation; it breaks through the orthogonal limitation.
提出了一种基于FH序列的自由空间光通信多载波调制(FSO - OFDM)时间频率同步方案。
A timing and frequency synchronization scheme based on FH sequence is proposed for the free space optical communication Orthogonal frequency Division Multiplexing (FSO-OFDM).
多载波调制技术是一种并行数据处理方式，有效地对抗多径衰落，可以提高无线带限信道的数据传输速率。
Multicarrier modulation is a form of parallel data transmission, which is efficient to reduce the detrimental effects of multipath fading.
本文将软件无线电技术和OFDM多载波调制技术相结合，提出了基于软件无线电平台的OFDM多载波传输系统方案。
This paper mainly focuses on the combination of OFDM system with the Software Radio technology and presents OFDM transceiver scheme based on Software Radio platform.
从这一点出发，多元正交幅度调制(MQAM)、多载波调制(MCM)及自适应调制技术成为下一代移动无线系统中最有竞争力的几种候选技术。
From this point, M-ary Quadrature Amplitude modulation (MQAM), MultiCarrier modulation (MCM) and adaptive modulation techniques are good candidates in next generation mobile radio system.
本文研究了自适应正交多载波频分复用（AOFDM）中根据估计出的信道特性选择调制方式的问题。
The problem of how to choose the constellation size based on the estimated channel qualities in AOFDM systems is addressed in this paper.
多调制源、多载波信号的循环自相关解调分析存在交叉项的干扰，这使循环自相关解调方法的实际应用产生了困难。
The cross-term interference caused by multi-modulator and multi-carrier makes it difficult the use of the cyclic autocorrelation demodulation.
正交频分复用(OFDM)是一种多载波宽带数字调制技术。
Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier broadband modulation technique.
同时，基于传统的应用于多电平逆变器的多载波spwm调制策略，提出了对应于组合拓扑结构的组合调制策略。
At the same time, based on conventional modulation strategies-multi-carrier SPWM applied on multilevel inverter, hybrid modulation strategies are introduced corresponding to hybrid structure.
同时，基于传统的应用于多电平逆变器的多载波spwm调制策略，提出了对应于组合拓扑结构的组合调制策略。
At the same time, based on conventional modulation strategies-multi-carrier SPWM applied on multilevel inverter, hybrid modulation strategies are introduced corresponding to hybrid structure.
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