matlabccdf,CCDF是什么意思
1. For modern communication system, in order to save spectrum resources and boost spectrum efficiency, some kinds of complex digital modulation are used, for example QPSK, QAM, OFDM, which are not constant envelop modulation. Furthermore the peak to average power ratio is very big. Taking WCDMA for example, PAR is 6～9dB at 0.01%probability
on the CCDF.
由于现代通信系统为了提⾼频谱利⽤率，采⽤了各种复杂的数字调制技术QPSK，QAM，OFDM，这些都是⾮恒定包络的调制⽅式，并且峰值和平均值相差较⼤，通常功率放⼤器采⽤功率回退的⽅法来达到线性度的提升，但是随着功率的回退，放⼤器的功率附加效率也会⼤⼤的降低。
2. For both LOS and NLOS cases, different MIMO capacities are calculated and examined. For the better comparison, the Complementary Cumulative Distribution Function (CCDF) of MIMO channel capacity is calculated.
本⽂计算并⽐较了在LOS和NLOS情况下MIMO的容量差异；为进⾏更好的⽐较，还计算了MIMO信道容量的互补累积分布函数(CCDF)。
3. In this project I analyze the PAPR of SC-FDMA and analytically derive the time domain SC-FDMA signals and numerically compare PAPR characteristics using the complementary cumulative distribution function (CCDF) of PAPR.
在这篇论⽂中，我分析了SC-FDMA的PAPR并且解析地导出SC-FDMA的时域信号，并利⽤PAPR的互补累积分布函数(CCDF)对它们的PAPR特征进⾏数值⽐较。
4. A novel parameter, cubic metric is introduced to weigh the character of signals. It analyzes the peak average ratio and complementary cumulative distribution curve of the Orthogonal Frequency Division Multiplexing signal used in an OFDM system.
parameter是什么意思啊介绍了⼀种新的⽤来衡量信号特性的参数-⽴⽅制系数(CubicMetric)，分析了正交频分复⽤(OFDM)信号的峰值平均功率⽐，⽴⽅制系数及互补累积分布函数(CCDF)曲线。
5. Compared with the performance of the IEEE 802.16d standard, the IPR method achieves better Complementary Cumulative Distribution Function (CCDF) performance without BER performance degradation almost.
与IEEE802.16d标准中峰均⽐性能相⽐，本⽂提出的⽅法能在⼏乎不损失系统BER性能的情况下，获得良好的互补累积分布函数(CCDF)性能。
6. Thank you so much for the invaluable time, encouragement, advice and support. I know I am not just speaking for myself when I say how fruitful and exhilarating the whole CCDF.
⾮常感谢你们提供了这麽宝贵的时间、⿎励、建议和⽀持，当我说整个CCDF是这麽样的成功和令⼈振奋的活动时，我知道这不仅仅是对我个⼈⽽⾔。
7. Multicarrier modulation system based on wavelet packet transform is introduced. By analyzing the CCDF about peek value's power, its efficiency on measuring the performance of PAPR is demonstrated.
介绍了以⼩波包函数为载波的多载波调制系统，分析了WPM信号符号周期内峰值功率的互补累积分布函数(CCDF)及其对PAPR性能的有效描述；
8. We test its performance with software 89600. The test results show that its main parameters EVM, ACPR, CCDF reached the specifications of 3GPP protocol.
测试结果表明，信号源的主要参数EVM、ACPR、CCDF和码域功率等均达到了3GPP协议相关指标的要求。
9. The code restriction technique and clipping are combined to achieve higher PAPR reduction and b
etter BER, which can be seen from the simulation results of CCDF and BER based on MATLAB.
基于MATLAB的互补累积分布函数和误码率的仿真结果表明，码元约束技术和传统限幅的结合不仅降低了⾼峰均功率⽐，⽽且很好地改善了误码率性能。
10. CCDF的翻译
10. CCDF, which can measure multi-carrier signals very effectively, is one of the important technologies of real-time spectrum analyzer.
CCDF测量是实时频谱分析仪的关键技术之⼀，对于测量多载波信号⾮常有⽤。

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