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.
通过研究有效的无线资源分配策略，可以提高多载波系统的传输性能。
Through the study of efficient allocation strategy, the performance of multi-carrier system can be improved.
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.
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 research.
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.
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.
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.
给出了多载波CDMA系统构架。
通过在阵列天线多载波ds - CD MA系统下构造统一的信号模型，实现了基于子空间的信道盲估计。
By unified signal model of antenna array Multicarrier DS-CDMA system, the subspace-based blind channel estimation is achieved.
提出了多载波码分多址测控通信系统的概念。该系统不但能完成伪码精确测距，而且能进行高速数据传输。
This paper puts forward the concept of MC CDMA system, that can both measure distance accurately with PN code and transmit High speed data.
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.
多载波CDMA系统结合了正交频分复用（OFDM）技术和CDMA技术的优点，自1993年提出以来就受到了广泛的重视。
A multicarrier CDMA system combines the advantages of an orthogonal frequency division multiplexing (OFDM) scheme with those of a CDMA scheme.
该文考虑空时分组码多载波码分多址（MC-CDMA）系统的盲干扰抑制。
This paper considers blind interference suppression for a space-time block coded MultiCarrier CDMA (MC-CDMA) system.
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.
数值仿真结果表明：多载波频率分集CDMA系统在无线宽带数据传输中性能大大优于CDMA，具有良好的应用前景。
The numerical results of simulation show that the ability of MC-CDMA for wireless broadband data transmission is much better than CDMA, therefore it has a better perspective for business application.
介绍了单载波频域均衡技术的原理，与单载波时域均衡以及多载波ofdm系统进行了比较。
This paper introduces the theory of Single Carrier Frequency-Domain Equalization (SC-FDE), and compares the SC-FDE system with Single Carrier Time-Domain Equalization (SC-TDE) system and OFDM system.
接着，本论文对OFDM和多载波cdma的系统结构进行了讨论，对多载波cdma系统中的导频信道估计技术进行了深入研究。
Next, the system structure of OFDM and multi-carrier system are discussed, followed by the pilot based channel estimation for the multi-carrier CDMA systems.
采用遗传算法搜索子载波最优分配方案，对多用户正交频分复用多址接入(OFDMA)系统资源分配问题进行了研究，提出了一种多载波比例公平调度算法G - PFS。
Focusing on the resource allocation problem in multi-user orthogonal frequency division multiple access (OFDMA) systems, a multi-carrier proportional fair scheduling algorithm, G-PFS, is proposed.
结果表明，射频信号的驱动电压，系统中偏振态的变化是影响频率锁定多载波光源产生的主要因素。
The results show that the radio frequency drive voltage, the variation of states of polarization are main factors to affect the generation of the frequency-locked multi-carrier source.
频域均衡作为关键技术不仅运用于DS- CDMA系统，而且也运用于多载波cdma (MC - CDMA)系统中来克服信道的频率选择性。
Moreover, FDE has been adopted as a key technique for both DS-CDMA and multi-carrier (MC -) CDMA to overcome the channel frequency-selectivity.
其次，讨论了两跳单中继多载波协同通信系统的信道估计的问题，主要是基于辅助块状导频的方法；
Second, channel estimation algorithms of two-hop OFDM cooperative communication system with single relay are discussed, which are mainly based on block pilot.
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.
多载波扩展频谱码分多址系统（MC／CDMA）是一种消除符号间干扰的有效技术。
MC/CDMA is one of the effective techniques to mitigate the ISI.
从两种方案的PAPR，不同收发模式下的系统性能进行了比较分析，得出直接宽带模式性能优于多载波模式。
They are compared with the performance of PAPR and BER. The results indicate that the performance of direct wideband mode is better than the other.
如果他们用于基于OFDM技术的多载波通信系统评估不是很有效，迫切需要新的有效的映射方法来更好地评估OFDM通信系统。
This paper presents the approaches of link to system mapping for OFDM/multi-carrier mobile communication system by analysing some materials.
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.
单载波及多载波太比特光传输系统；
Terabit/s multi-carrier / single-carrier optical transmission systems.
对基于窄带码分多址（N-CDMA）方式的信息站系统与宽带多载波码分多址（WM-CDMA）系统的频谱叠加以及两个频谱重叠系统前向链路的容量进行了分析。
In this paper, we studied the spectral overlay of Infostations based on N-CDMA and WM-CDMA systems and analyzed the achievable capacity of I/WM-CDMA system in downlink.
对基于窄带码分多址（N-CDMA）方式的信息站系统与宽带多载波码分多址（WM-CDMA）系统的频谱叠加以及两个频谱重叠系统前向链路的容量进行了分析。
In this paper, we studied the spectral overlay of Infostations based on N-CDMA and WM-CDMA systems and analyzed the achievable capacity of I/WM-CDMA system in downlink.
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