研究降低信号峰均功率比问题。
The article mainly research how to reduce the signal peak to average power ratio (PAPR).
提出一种峰均功率比抑制的相位扰动方法。
A scheme named Phase Scrambling is proposed for the suppression of PAPR.
针对于此，本文主要研究降低峰值平均功率比算法。
So this thesis studies the algorithms which reduce the PAPR.
本文着重研究了降低OFDM系统峰均功率比的方法。
The methods to lower the peak-to-average power ratio (PAPR) of OFDM system are researched in the essay.
提出了一种新的降低正交频分复用系统峰均功率比的方法。
A new method is proposed to reduce the peak-to-average power ratio of orthogonal frequency division multiplexing system.
首先研究分析了目前降低峰均功率比的三大类方法的优缺点。
Firstly, the advantages and disadvantages of three kinds of methods to lower the PAPR are researched and analyzed.
马达峰值功率和引擎发动机定额功率比在5% - 15%的为轻度混合动力。
The motor engine quota peak power and power than in the 5% 15% for mild hybrid.
它的主要缺点是对频率同步比较敏感，并且峰值平均功率比（PAPR）过高。
Its main disadvantages are sensitivity to synchronization errors and high peak-to-average power ratio (PAPR).
正交频分复用(OFDM)系统的一个主要缺点是峰均功率比(PAPR)过高。
One of the major drawbacks of the OFDM system is the high peak-to-average power ration (PAPR).
超级电缆可承载的功率比现有的传输线路高许多倍，对地下化所需的成本也有帮助。
SuperCables would carry many times the power of existing transmission lines, which helps the economic case for burial.
降低OFDM - CPM系统中的峰值平均功率比(PAPR)是关键技术之一。
One of the key techniques is to reduce the peak-to-average power ratio (PAPR) of the OFDM-CPM system.
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.
这种泵流量均匀、作业平稳、噪音小、作业压力和容积功率比齿轮泵高、布局比齿轮泵杂乱。
The pump flow evenly, smooth operation, low noise, high power operation pressure and volume ratio gear pumps, gear pumps than messy layout.
传统的削波算法虽然能够简单有效地降低信号的峰均功率比，但是会带来较大的额外频谱增益。
As a simplest approach, traditional clipping method can reduce PAPR of OFDM signals, but it causes large unwanted out-of-band radiation.
由于电缆的充电功率比普通架空线路高一个数量级，如何进行无功补偿是一个需要认真研究的课题。
As charging power of cable is about one order of magnitude higher than general overhead line, how to compensate reactive power is a new subject to us.
利用编码技术，根据格雷互补序列和雷德密勒码具有低的峰均功率比的特性给出了具体的编码过程。
A coding scheme based on Golay Complementary sequences and Reed-Muller codes is proposed to reduce the PAPR.
虽然第二个交易系统的成功率比第一个交易系统的成功率低，但是它的优势却是第一个系统的2.5倍。
The second trading system's "edge" is 2.5 times that of the first even though it has a much lower winning percent.
分析结果表明，对于常用的水系统控制方式而言，水泵转速（流量）比与轴功率比的三次幂关系不成立；
The results show that for the common pump control methods, the third power relation between the pump rotate speed(water volume) ratio and the shaft power ratio is not true;
与OFDM相比较，WMCM的基带调制时间复杂度降低，峰均功率比更优，对抗脉冲干扰的能力更强。
As it is to OFDM, WMCM has lower time complexity in baseband modulation, good PAPR distribution, and takes on more robust to pulse interference.
提出了一种基于分割传输序列(PTS)改善正交频分复用信号峰值平均功率比(PAPR)的优化算法。
An optimal algorithm based on partial transmit sequences (PTS) for reducing the peak to average power ratio (PAPR) of orthogonal frequency division multiplexing signal is presented.
在研究用选择性映射降法降低OFDM系统峰均功率比的基础上，提出了用m序列对SLM方法进行改进。
The paper first introduces the selected mapping method for the reduction of the peak-to-average power ratio of OFDM signals, and a method for improving SLM using m-sequence is put forward.
FCC(美国联邦通信委员会)规定一些设备上，如地面移动无线电，频谱遮罩或邻近信道功率比的需求。
The FCC (Federal Communications Commission) sets spectral masks or adjacent-channel-power-ratio requirements on some services, such as land mobile radio.
合理的信道化码资源管理策略设计可以提高3g系统的吞吐量、降低用户的呼叫阻塞率和降低信号的峰平功率比。
Channelization code management can increase the throughput, decrease the blocking probability of call setup requests, and reduce the signal Peak to Average Power Ratio (PAPR) in 3g systems.
部分传输序列(PTS)是一种复杂度较高的减小正交频分复用(OFDM)系统峰均功率比(PAPR)的方法。
Partial transmit sequences (PTS) is a method with high complexity to reduce the Peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) system.
但是OFDM信号有高的峰值平均功率比，当它通过高功率放大器时会导致非线性失真，从而使得系统的性能下降。
But the OFDM signal has a large PAPR, which results in the significant nonlinear distortion when it passes through a HPA (high power amplifier), thereby the performances of the system descend.
针对MC - CDMA系统的上行链路存在的峰均功率比问题，提出了一种降低峰均功率比的新的系统解决方案。
For the high Peak-to-Average Power Ratio (PAPR) problem existing in OFDM based MC-CDMA system uplink, this paper proposes a new system scheme as a solution to PAPR.
采用垂直入射具有金属衬底的均匀等离子体模型，对不同入射频率的电磁波的衰减以及总出入射功率比进行了数值模拟。
In a model with vertical incidence of plane electromagnetic wave into plasma slabs with metal underlay, the attenuation of electromagnetic wave and reflected power are deduced.
富士通公司指出使用氮化镓高电子迁移率晶体管技术后，新型放大器功率比目前使用砷化镓晶体管的放大器的功率提高了6倍多。
Fujitsu points out that using GaN HEMT technology allows more than 6 times the output power of existing amplifiers using gallium-arsenide (GaAs) transistors.
本文主要研究了多载波相位编码(MCPC)脉冲信号，以及具有低峰值-平均包络功率比(PMEPR)的多载波脉冲串的设计。
This thesis mainly discusses the multi-carrier phase code (MCPC) pulses signal, and the design of pulses trains with low peak-mean envelop power ratio (PMEPR).
本文主要研究了多载波相位编码(MCPC)脉冲信号，以及具有低峰值-平均包络功率比(PMEPR)的多载波脉冲串的设计。
This thesis mainly discusses the multi-carrier phase code (MCPC) pulses signal, and the design of pulses trains with low peak-mean envelop power ratio (PMEPR).
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