Carrier interference is often caused by careless installation or malfunction of uplink devices.
上行设备在建站时的疏漏和运行中的故障都是载波干扰的常见原因。
Moreover, serious ISI (Inter-Symbol Interference) and ICI (Inter-Carrier Interference) can be readily circumvented by introducing CP (Cyclic Prefix).
而且,循环前缀的引入消除了符号间干扰(ISI),避免了信道间干扰(ici)。
Synchronization error will lead to inter symbol interference as well as inter carrier interference. Therefore, synchronization is extremely crucial to OFDM systems.
同步错误不但会导致符号间干扰,还会导致信道间干扰,因此同步是OFDM的关键技术。
When a synchronization error exists, the orthogonality between sub-carriers can't be maintained, serious inter-carrier interference is introduced and demodulation performance will be degraded greatly.
当存在同步错误时,子载波之间的正交性遭到破坏,从而引起严重的载波间干扰,使解调性能大大下降。
The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
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 cross-term interference caused by multi-modulator and multi-carrier makes it difficult the use of the cyclic autocorrelation demodulation.
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 interference of carrier magnetic field to geomagnetic field has been a difficult problem for a long time, which has influence on navigation compass deviation and geomagnetic measurement.
载体磁场对地磁场的干扰,一直是影响导航罗差、地磁测量的技术难题。
The paper analyzes the interference rejection of Quadrature amplitude modulation signals in the presence of carrier phase jitter, sinusoidal interference and white Gaussian noise.
文章分析了存在载波相位起伏、正弦干扰、高斯白噪声时正交调幅数字系统的抗扰性。
Compared with conventional power control method utilizing carrier to interference ratio, the simulation results show that it can achieve lower bit error ratio and higher channel capacity.
模拟结果表明,该方法比一般的载波干扰比功率控制方法性能更优,可获得更低的误码率和更高的信道容量。
Based on the analysis of carrier receiver limited amplitude interference, provide a way of circuit modification.
通过对载波接收机限幅干扰分析,提出电路改进的办法。
Generally speaking, significant improvement of carrier to interference ratio of the system can be achieved in this way. As a result, the capacity and channel transmission quality can be improved.
一般认为,这一应用可以从根本上解决移动通信自干扰系统的载干比问题,并因此实现用户容量和信道传输质量的根本性改善。
It is a mature receiving and transmitting technique, which can lower the interference of symbol in each carrier and economize the system expense used for balance.
他是较为完备的移动接收和传输技术,可以大大降低每个子载波内的符号间干扰,节省了用于均衡的系统开销。
The interference of carrier magnetic field to geomagnetic field has been a difficult problem for a long time, which has influence on navigation compass deviation and geomagnetic measurement.
载体磁场对地磁测量的干扰,一直是造成导航设备罗差、影响地磁测量精度的技术难题。
The system performance is evaluated in the presence of partial band interference, it is compared with that of a single-carrier DS CDMA system.
文中估计了存在部份带宽干扰下系统的性能,并与单载波直扩码分多址系统进行了比较。
This paper focuses on carrier frequency offset estimation (CFO) and multiuser interference elimination in uplink OFDMA system based on generalized carrier assignment schemes.
本文针对上行链路任意分配子载波重点研究了载波频偏估计和多用户间干扰消除的方法。
With the introduction of carrier fringes in digital holographic interferometry, Fourier analysis method was used to analyze interference patterns and calculate their dynamic changes conveniently.
由于在全息干涉测量中引入载波条纹,所以能够方便地应用傅里叶分析方法分析计算干涉条纹的动态变化。
I introduce the frequency allocation between BCCH carrier frequency and TCH, signal fading arithmetic, interference theory and the adjusting thinking of dynamic power control.
介绍了BCCH载波与TCH载波的频率配置、信号衰落算法、干扰原理、动态功率控制的调节思路,以及提高网络质量,改善小区登陆与切换性能的措施。
A new pre-coding scheme based on the maximum of carrier-to-interference is proposed in this article.
该文提出了一种基于最大化载波干扰比原理的含参数的预编码方案。
Frequency width is compressed by decreasing signature-code speed and using bit-signal modulates by different carrier so as to decrease multi-user interference.
利用降低码片速率有效降低每路信号占有的带宽,将每路信息的比特分配在不同的调制载波上,减少了各路信号间的多址干扰。
The position and width of interference pattern were related to the observing Angle, range resolution and carrier frequency.
明暗条纹出现的位置和宽度与雷达观测角度、距离向分辨率、以及雷达工作频率等有关。
The system features simple construction , quick response and strong anti - interference ability. It may be applied and further developed in the field of wide range of carrier frequencies.
该系统电路简捷、速度快、抗干扰能力强,可在很宽的载波频率范围内应用和深入研究。
The frequency reuse factor and the capacity of cellular systems are derived by analyzing and calculating the carrier to interference power ratio in the cellular radio system.
通过对蜂窝系统的载干比的分析,计算了各种蜂窝系统的频率复用系数和系统容量。
The frequency reuse factor and the capacity of cellular systems are derived by analyzing and calculating the carrier to interference power ratio in the cellular radio system.
通过对蜂窝系统的载干比的分析,计算了各种蜂窝系统的频率复用系数和系统容量。
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