平衰落的英文

• flat fading

• "平"英文翻译    flat; level; even; smooth
• "衰落"英文翻译    decline; be on the wane; go ...
• "平衰落信号" 英文翻译 :    flat fading signal
• "衰落" 英文翻译 :    decline; be on the wane; go downhill; fading; decay; decaying; lapse; erode 日趋衰落 fall into decay with each passing day; be on the decline; 日益衰落 be on the wane; 作为一个世界强国, 这个国家已经衰落。 the nation declined as a world power. 旧文化很快地衰落下去。 the old civilization was fast falling into decay
• "自动电平衰减" 英文翻译 :    auto fade
• "堕落,衰落" 英文翻译 :    decadence
• "径衰落" 英文翻译 :    multipath fading
• "抗衰落" 英文翻译 :    anti-fading◇抗衰落天线 anti-fading antenna; 抗衰落系统 anti-fading system
• "快衰落" 英文翻译 :    fast fading; rapid fading; short-term fading
• "慢衰落" 英文翻译 :    long-term fading; slow fading
• "强衰落" 英文翻译 :    deep fade
• "上衰落" 英文翻译 :    fading rise
• "声衰落" 英文翻译 :    sound fading
• "衰落，斜度" 英文翻译 :    fall
• "衰落比" 英文翻译 :    fading ratio
• "衰落机" 英文翻译 :    fading machine
• "衰落率" 英文翻译 :    fading rate
• "衰落期" 英文翻译 :    phase of decline; winter
• "衰落区" 英文翻译 :    declining region; decliningregion; fade area; fade zone; fading area; fading region; fadingarea
• "衰落中" 英文翻译 :    on the decline
• "褪色；衰落" 英文翻译 :    fade
• "下降，衰落" 英文翻译 :    decline
• "预衰落" 英文翻译 :    prefade
• "在衰落" 英文翻译 :    on the decline
• "瑞利衰落 雷利衰落" 英文翻译 :    rayleighfading

• While this dissertation will use wavelet analysis to decompose fading - process , and provide wavelet model of flat fading channel , then propose a new blind receiver based on monte carol algorithm
  本文将平衰落信道的衰落过程进行小波分解与建模，在此基础上提出一种采用顺序蒙特卡罗算法的盲均衡接收机，并给出了仿真结果以证明此接收机的优异性能。
• To verify their effectiveness , simulation studies are conducted to test the performance of the proposed turbo codes in awgn channels and flat fading channels . in these simulations , the modified max - log - map decoding algorithm and the golden - spread interleaver are applied
  仿真研究了采用优选扩散交织与改进的max - log - map译码算法的turbo码在加性白高斯噪声( awgn )信道以及平衰落信道上的性能。
• And then facing the problem of the channel estimation of the adaptive modulation system , we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail . to meet flat fading channel , we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length . the conclusion can be drawn from these results
  接着，对自适应调制系统中的信道估计问题难点，详细推导了平衰落信道条件下和选择性衰落信道条件下最大似然( ml )估计和最大后验概率( map )估计算法，针对平衰落信道，我们仿真了map估计和ml估计的方差与导频符号长度的关系，仿真结果表明，错误方差受多谱勒频率的变化影响最大，并且对实际的自适应调制系统，导频符号长度的取值超过20个符号长度时， map信道估计明显优于ml信道估计。
• Adaptive modulation mainly include several problem for example signal shape , channel estimation , all digital receiver and so on . since the channel referring to adaptive modulation is very hostile in wireless transmission channel , its algorithms and architectures used for the modulation and demodulation should be carefully devised and considered . designing appropriate algorithms and architectures of the adaptive modulation are main research goal of this paper to meet the need of flat fading channel and selective fading channel
  自适应调制技术主要包括信号成形、信道估计和检测、全数字接收等方面的问题，由于自适应调制所涉及的信道是非常恶劣的无线传输信道，其调制与解调的算法和结构必须加以精心的设计和考虑，针对具体所假设的平衰落和选择性衰落的无线信道情况来设计自适应调制系统的算法和结构是本文研究的主要方向。
• In this part , the two anterior chapters mainly discuss the various basic theories used by the designing for the propagation paths of the electric wave . the theories include the computation methods for the fade and the loss of various propagation paths and obstructions , the engineering estimation methods of the flat fading and frequency selected fading , the designing methods of space diversity and frequency diversity , etc . at the same time , the special designing method of the sea - across path is discussed in detail
  本文首先阐述了微波中继通信工程设计中的相关知识，其中前两章主要论述了线路设计中所用到的种种理论基础知识，包括对于各种路径情况、障碍情况的衰落与损耗的不同计算方法，平衰落与选择性衰落中断率的估算方法，天线分集和频率分集技术的理论知识和设计方法等等。
• Because using ofdm , a frequency - selective fading channel can be transformed into multiple frequency - flat fading sub - channels , in the coding process , spatial diversity ( due to multiple antennas ) is integrated with frequency diversity ( due to delay spread ) , therefore , the proposed code can provide higher diversity gain than space - time code alone
  该编码利用正交频分复用把频率选择性衰落信道变换成平衰落信道的特性，同时引入了基于多天线的空间分集和基于时延扩展的频率分集，比空时编码具有更高的分集增益。