本文主要研究了配电网电力线通信中的正交频分复用技术和动态频谱优化技术。
OFDM and dynamic spectrum optimization technology in the PLC are researched in this paper.
正交频分复用技术以其多种优势成为低压电力线宽带通信的最佳选择，信道估计是正交频分复用系统的关键问题之一。
Due to many advantages of Orthogonal Frequency Division Multiplexing technique, it becomes the best choice for low-voltage power line broadband communication.
以高速率、高吞吐量为目标，该技术综合了正交频分复用技术强抗干扰的特性，和多输入多输出技术高信道容量的优势。
It aims for high transmission rate and high throughput, and it combines OFDM which has the strong ability of preventing interference with MIMO which has the advantages of high channel capacity.
载波同步是正交频分复用系统的一项关键技术。
Carrier frequency synchronization is one of the key techniques of OFDM system.
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。
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)技术是未来宽带无线通信中最流行的技术之一。
Orthogonal frequency division multiplex (OFDM) is currently one of the most popular techniques for future broadband wireless communications.
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.
正交频分复用(OFDM)是为宽带移动通信而提出的新型调制技术。
Orthogonal frequency division multiplexing (OFDM) is a new modulation method for broadband mobile communications.
目前，正交频分复用(OFDM)技术因能在无线时变信道中进行高速数据传输而受到广泛的关注。
At present, more comprehensive attention has been taken to OFDM technology in data transmitting systems with wireless time-varying channel.
通过对OFDM(正交频分复用)技术原理及测井电缆传输特性的分析，设计出满足测井电缆所需的调制解调器。
Based on analyzing the theory of OFDM (Orthogonal Frequency Division Multiplexing) and characteristic of cable transmission, the Modem of high speed cable telemetry system has been designed.
正交频分复用(OFDM)技术、单载波频域均衡技术(SC -FDE)和多天线技术都是有助于达到这一目标的有效技术。
Orthogonal frequency division multiplexing (OFDM), single carrier frequency domain equalization (SC-FDE) and multiple antennas technique are efficient techniques to achieve this goal.
正交频分复用(OFDM)是实现宽带电力线通信的关键技术。
Orthogonal Frequency Division Multiplexing (OFDM) is a critical technology for the realization of broadband power line communication.
正交频分复用(OFDM)技术具有抗多径衰落，频谱利用率高等优点，适合于在宽带卫星通信这种无线环境下进行高速传输。
Orthogonal frequency division multiplex (OFDM) is suitable for Broadband-satellite mobile communication system with the advantage of robustness to muti-path and high bandwidth efficiency.
作为一种高效的数据传输技术，正交频分复用(OFDM)技术具有良好的抗衰落能力，实现数据的高速传输。
As an efficient data transmission technique, OFDM can resist multi-path fading and realize high data rate transmission.
正交频分复用(OFDM)技术已经广泛应用于各种高速宽带无线通信系统中。
OFDM technology has been used in various high speed wide bandwidth wireless system.
文章在分析地面传输信道特性的基础上，介绍了地面广播数字电视的DVB - T标准，探讨了其核心的正交编码频分多路复用COFDM技术、前端发射设备的系统结构及其优缺点。
Base on the analysis of terrestrial transfer channel, the paper introduces the DVB-T standard, and discuss the core COFDM technology as well as front-end transmit system structure.
该文提出了一个基于正交频分复用(OFDM)技术的毫米波产生方案。
A scheme of optical millimeter (mm) wave based on orthogonal frequency division multiplexing (OFDM) generation have been proposed with theoretics and simulation in this paper.
正交频分复用（OFDM）技术是近几年兴起的一种在无线信道上实现高速数据传输的新技术。
Orthogonal Frequency Division Multiplexing (OFDM)technology in recent years is the rise of a wireless channel to achieve high-speed data transfer of new technologies.
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.
正交频分复用(OFDM)技术能够有效的对抗无线信道的频率选择性衰落，成为无线通信领域的另一个研究热点。
Orthogonal frequency division multiplexing (OFDM) can effectively combat the multipath fading of wireless channels and has become another hot point in the area of wireless communications.
调制方式和多址接入的灵活性是正交频分复用（OFDM）技术的一大优点。
One of the advantages of OFDM is the flexibility concerning modulation and multiple access techniques.
首先介绍了正交频分复用的基本原理和认知无线电技术。
Initially, fundamentals of OFDM and technologies of cognitive radio are introduced in this paper.
信道估计是正交频分复用系统中的关键技术之一。
Channel Estimation technique is one of the key techniques in OFDM communication systems.
介绍了无线接入网中的两种关键技术：OFDM(正交频分复用)和CD MA(码分多址)。
Two multiple access techniques are analyzed in the context of this paper: Orthogonal frequency division multiplexing (OFDM) and code division multiple access (CDMA).
正交频分复用（OFDM）技术具有很强的抗符号间干扰、抗多径衰落和时延的能力。并且保持较高的传输速率。
Orthogonal Frequnency Division Multiplexing(OFDM) is suitable for high rate data transmission in wireless channels because it can combat Inter-Symbol Interference and multipath fading efficiently.
本文主要研究正交频分复用（OFDM）及其抗多径衰落的一些技术，并利用计算机进行仿真。
This paper concentrates on the orthogonal frequency division multiplexing(OFDM) technique and some techniques to resist multipath fading. It also simulates by computer.
正交频分复用和直接序列扩频技术是解决该问题的有效手段。
The orthogonal frequency division and the direct sequence spread spectrum technology are effective methods.
正交频分复用(OFDM)作为一种高效的数据传输技术，具有良好的抗衰落能力，应用前景非常广阔。
Orthogonal Frequency Division Multiplexing (OFDM), as an efficient data transmission technology, has good antifading ability and broad application prospect.
正交频分复用(OFDM)作为一种高效的数据传输技术，具有良好的抗衰落能力，应用前景非常广阔。
Orthogonal Frequency Division Multiplexing (OFDM), as an efficient data transmission technology, has good antifading ability and broad application prospect.
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