抗多径的英文

• antimultipath

• 抗    resist; combat; fight
• 多径    multipath
• 多径    multipath◇多径传播 multipath transmission [propagation]; 多径传输信号 multipath signals
• 多径[传输]干扰    multipath interference
• 多径传播    mmultipath propagation; multipath propagation
• 多径抵消    multipath cancellation
• 多径分集    multipath diversity
• 多径干扰    mpi multipath interference; multipath
• 多径滚筒筛    stepped screen
• 多径级集料    multiple size aggregate
• 多径铰刀    multidiameter reamer
• 多径失真    multipath distortion
• 多径时延    multipath delay
• 多径衰减    multipath fading
• 多径衰落    multipath fading
• 多径效应    effects of multipath; multipath effect
• 信号多径比    smr signal to multipath ratio
• 电抗多口网络    reactance multi ports; reactance multi-ports
• 抗多巴胺能药    antidopaminergic drugs
• 大气多径衰落    atmospheric multipath fading
• 多径传播函数    nultipath propagation function
• 多径传播效应    multipath effect
• 多径传输信号    multipath signals
• 多径缩减因子    multipath reduction factor
• 多径镗孔铰刀    multidiameter boring cutter

• Shortwave channel is time varying transmission channel . it has dispersion in frequency and time domains . this characteristics hinds the data transmi - ssion at high speed and the correction of received data . in this dissertation i have analyzed the statistic characteristic of shortwa - ve channel , established the model of shortwave channel and simulated the rayl eigh fading distribution . the technology of spreading spetrum has been proved that it has the capability for anti - multipath and discerning multipath
  在短波通信中，由于信道的时间色散和频率色散，引起多径展宽和多径衰落，前者限制了数据的传输速率，后者造成短波数据通信中出现突发错误，为了解决多径效应对短波通信的影响，本文所做工作如下：首先详细分析了短波信道的统计特性，建立其数学模型；其次分析了扩频通信的特点，从理论上证明扩频技术不仅具有抗多径干扰能力，而且具有分离多径的能力；介绍了传统的rake分集合并技术的特点。
• Recently spread spectrum technique has been used widely in wireless data communication , cellular mobile communication , military communication and telemetry monitor system with resistance to interference , high usage of spectrum , resistance to multi - path fading , so investigators in communications field pay more attention to the technique , especially direct sequence spread spectrum ( dsss ) technique
  近年来，扩频技术以其抗干扰能力强、频谱利用率高、抗多径等优越性能在无线数据通信、蜂窝移动通信、军事通信以及遥测监控系统中获得了广泛的应用，并日益受到通信领域研究人员的重视，特别是直接序列扩频技术( dsss ) 。
• Spread spectrum technique , which can handle variable adverse environments , exhibits unique qualities that have a number of advantages in anti - jamming , anti - noise , reduction of multi - path interference , low power spectral density , privacy , selective addressing and code division multiplexing
  扩频通信技术具有优越的抗干扰、抗噪音、抗多径衰落性能，能在低功率谱密度下工作，具保密性、可多址复用和任意选址，能有效克服各种恶劣的信道特性，目前广泛应用于移动通信、雷达、导航、测距、电力线通信等领域。
• Ofdm is one of multi - carrier digital modulation techniques , in which a single high data rate data stream is transmitted using a number of lower data rate sub carriers , it has many properties , such as robustness to multi - path fading , high data rate transmission capability with high bandwidth efficiency , and so on
  Ofdm是一种特殊的多载波传输方式，它使用一系列低速子载波并行传输数据，使得它具有抗多径干扰的能力、能以很高的频谱利用率实现高速数据传输等。
• This paper concentrates on the orthogonal frequency division multiplexing ( ofdm ) technique and some techniques to resist multipath fading . eliminate isi through use of a cyclic prefix . diversity techniques . using adequate ofdm combined with channel coding ( cofdm ) can enhance the ability to lower the effect of multipath fading
  本文研究了ofdm的基本原理及抗多径衰落的一些措施，如加循环前缀，利用多径进行分集接收，将ofdm与信道编码及交织结合起来，频域均衡。
• The miniature and wide band of equipment become more important than before as the development of communication technology . on the other hand , the uwb ( ultra - wide band ) communication system which have the characteristics with large communication capacity , small average power density and good anti - interference capability and need miniature and wide band components , is a development direction in 21st century
  此外,超宽带( uwb )通信具有通信容量大、保密性能好、平均功率密度小、抗多径干扰等许多优点,是21世纪的通信发展方向,它的发展也要求与之相适应的电子元器件。
• At last we verify the performance of the improved adaptive method and the blind adaptive multi - user detection by simulations . it is shown that the improved adaptive method converges faster than lms . the blind adaptive multi - user detection can suppress mai and isi at the same time , and its output ber performance is better than other blind or semi - blind detectors
  论文最后还验证了结合峭度，子空间和改进的自适应方法的全盲自适应检测方法的性能，通过与其它盲检测方法性能的比较，可以看出这种方法抗多址能力比其它盲检测方法大大提高，而且具有较好的抗多径，时变信道的性能。
• Cdma ( code division multiple access ) is a promising technology for future mobile communication system because of its several features with which other multiple access technology can not compare : higher efficiency of frequency allocation , robust anti - multipath effect , macro diversity , mitigating interference , soft capacity , low power , soft handoff , simple frequency design , easy access , and so on
  码分多址接入( cdma : codedivisionmultipleaccess )方式以频谱利用率高、抗多径、抗干扰、软容量、低功率、软切换、宏分集、频率规划简单、用户接入方便等其它多址技术不可比拟的优越性被认为是未来移动通信系统的理想接入技术之一。
• Because of the broadcasting characteristics and power efficiency of multi - media , tds - ofdm ’ s dcli has strong capacities of adapting to high moving speed and preventing various distortions , it could be applied to the common complex distortion environment of broadcasts that cover large areas ; the time - frequency combination process allows for fast channel estimation and balancing , which could be used to support high - speed moving reception of high definition television
  由于具有多媒体广播特点和省电功能， tds - ofdm的帧头适应高速移动和抗多径干扰的能力非常强，能适应大范围广播覆盖造成的复杂干扰环境；时频结合处理的快速信道估计和均衡，支持高清电视高速移动接收。
• On the basis of theory analysis and reasoning , cdma single user system models based upon binary complementary sequences and complete complementary sequences are successfully built by use of s - function . and respectively taken 8 - bit , 16 - bit binary complementary sequence and one subset of 4 - order complete complementary sequence as examples , the simulations of all the functions of the system are realized . the result proves that it is proper and feasible to use the modified complementary sequences to cancel multi - path interference
  本论文在前面几章理论分析及论证的基础上，用matlabsimulink中的s - function成功构建了基于修正二元互补序列cdma单用户系统模型和基于修正完备互补序列cdma单用户系统模型，并且分别以8位长， 16位长二元互补序列以及4阶完备互补序列的一个子集为例，实现了对系统各项功能仿真，结果证明采用修正互补序列实现抗多径干扰的思路是正确的而且是可行的。