与单载波系统相比，OFDM系统存在多个正交子载波。
OFDM systems contain more than one orthogonal sub-carrier, so it is different from single carrier systems.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。
The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
因此自适应分配算法得到广泛关注，是当前多载波系统研究的热点问题之一。
Therefore adaptive allocation algorithms have been widespread concerned and become one of the focuses in multi-carrier system re.
多载波信号的峰值平均功率比远远大于单载波系统，而且峰平比随着子载波个数无限增长。
The ratio of peak and average power in multi carrier system is much larger than that in single carrier system, and may grow unboundedly as the number of subcarriers grows to infinity.
在研究了合作博弈论的基础上提出了一种适用于单载波系统的一对一匹配博弈频谱分配算法。
Through research on cooperative game theory, a one to one matching game spectrum allocation algorithm which can be used in single carrier system is proposed in this paper.
时延特征参数作为反应无线信道宽带特性的关键参数，对多载波系统的设计具有重要的指导意义。
As the key parameters to reflect the wideband channel characteristics, the parameters involved delay propagation play an important role in the design of multiple carries systems.
通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。
By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.
近年来，多载波OFDM系统因其均衡简单且能有效地抗多径干扰而受到广泛地研究。随着研究的深入，发现单载波系统也有类似的均衡办法与优点。
Multicarrier Orthogonal frequency-division multiplexing(OFDM) Systems have been widely researched in recent years because of its good anti-multipath characteristic when easily equalized.
无论是简单的单个远程载波监视器，灯塔接收器或是任何的生产线综合产品，客户都可以在全球任意地点进行完全的控制，并且在他们的系统上获得反馈。
Whether it is a single remote carrier monitor, beacon receiver or any combination of our product line, they will have complete control and feedback of their system from anywhere in the world.
本文针对有载波偏移的零中频bps K调制信号提出了一种软件解调系统。
The paper presented a software demodulating system of BPSK zero-IF signal containing carrier offset.
用扩频电力线载波通信技术设计了铁路站场智能化照明系统。
An intelligent lighting system for railway goods yard based on spread spectrum power line carrier communication technique is proposed.
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.
由于该系统降低了每个子载波上的数据速率，扩频序列更容易同步。
Furthermore, this system lowers the data rate of each carrier branch, so it is easier to make PN sequence synchronized.
本文研究了智能家居系统的结构和工作原理，介绍了X10电力线载波技术的关键部分，并在此基础上设计了网络控制器。
This paper presents the structure and principle of intelligent home system. It introduces the pivotal parts of X10 communication technology, and give the design of controller based on it.
在典型的通信系统中，调制过程是数字信号加载在载波的幅度值、载波的频率或者载波的相位上。
In the model communications system, the modulation process also is loaded the digital signal in the carrier scope value, the carrier frequency or on the carrier phase.
该改进方案改善了电力线载波通信系统的传输性能。
It can improve the transmission performances of power line carrier wave communication systems.
载波频率偏移是OFDM系统实现的关键问题之一。
Carrier frequency offset is one of the key problems in OFDM system.
利用一个自适应控制器跟踪信息信号的误差对产生混沌载波的发射系统进行参数调制。
The parameter of the transmitting system procreated chaotic carrier is modulated by errors from an adaptive controller and information signal.
OFDM系统存在对数据符号同步和载波频率偏移极为敏感的问题。
The OFDM is sensitive to the synchronization of the OFDM symbol and the carriers' frequency excursion.
提出了在架线电机车载波通信系统中，用数字通信取代模拟通信方式。
A digital communication system is introduced to replace analog system used in underground locomotive carrier communication system.
本文根据OFDM系统特点，分析了OFDM系统的时域载波频率捕获和信道估计方法。
We propose new carrier frequency acquisition and channel estimation algorithms based on the time-domain analysis of OFDM system.
低压电力线信道特性是设计低压电力线载波通信系统的基础。
The characteristics of power line channel are the foundation of designing the low voltage power line carrier communication system.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
针对MC - CD MA系统的上行链路提出了一种自适应子载波和功率分配算法。
Finally, an adaptive subchannel and power allocation scheme for MC-CDMA system is proposed.
设计了一种用于通信系统载波同步的新数字锁相环。
A novel all-digital phase locked loop (PLL), applied to the carrier synchronization of communication systems, is designed.
给出了多载波CDMA系统构架。
在三大标准中atsc为单载波传输系统，能较好支持固定接收，峰均值比较小。
In three standards, ATSC is the single carrier transmission system, it is easy to support the fixed receiving, its peak average value quite being small.
而产生ISI和ICI的主要原因是在OFDM系统接收端产生的符号定时偏差和载波频率偏差。
The most critical causes yielding the ISI as well as ICI are symbol timing and carrier frequency offset which are occurred in the OFDM receiver.
而产生ISI和ICI的主要原因是在OFDM系统接收端产生的符号定时偏差和载波频率偏差。
The most critical causes yielding the ISI as well as ICI are symbol timing and carrier frequency offset which are occurred in the OFDM receiver.
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