Description: 改进的SLM算法，用于降低OFDM系统的峰值平均功率比-Improved algorithms for OFDM system to reduce the peak-to-average power ratio Platform: |
Size: 255739 |
Author:guoxu |
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Description: OFDM系统中用SLM算法降低系统的峰值平均功率比-SLM OFDM system using the algorithm to reduce peak-to-average power ratio Platform: |
Size: 1310 |
Author:guoxu |
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Description: OFDM系统中用限幅法降低系统的峰值平均功率比-OFDM system limiting method used to reduce the peak-to-average power ratio Platform: |
Size: 1323 |
Author:guoxu |
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Description: OFDM系统中用PTS算法降低系统的峰值平均功率比-OFDM system PTS algorithm used to reduce the peak-to-average power ratio Platform: |
Size: 1560 |
Author:guoxu |
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Description: 改进的SLM算法，用于降低OFDM系统的峰值平均功率比-Improved algorithms for OFDM system to reduce the peak-to-average power ratio Platform: |
Size: 254976 |
Author:guoxu |
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Description: OFDM系统中用SLM算法降低系统的峰值平均功率比-SLM OFDM system using the algorithm to reduce peak-to-average power ratio Platform: |
Size: 1024 |
Author:guoxu |
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Description: OFDM系统中用限幅法降低系统的峰值平均功率比-OFDM system limiting method used to reduce the peak-to-average power ratio Platform: |
Size: 1024 |
Author:guoxu |
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Description: OFDM系统中用PTS算法降低系统的峰值平均功率比-OFDM system PTS algorithm used to reduce the peak-to-average power ratio Platform: |
Size: 1024 |
Author:guoxu |
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Description: 降低正交频分复用ofdm系统的峰值平均功率比的仿真-Reduce the Orthogonal Frequency Division Multiplexing OFDM system peak-average power ratio simulation Platform: |
Size: 1024 |
Author:lily |
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Description: OFDM信号具有高峰均功率比的特点，研究交织技术在抑制OFDM信号峰值平均功率比（PAPR）中的应用。论文首先阐述了OFDM的基本原理和关键技术，简单介绍了目前降低PAPR的几种方法，在对交织法降低OFDM系统的PAPR进行理论分析的基础上，提出了一套合理的交织方案――利用分组交织器和伪随机交织器降低PAPR，最后通过MATLAB仿真得出结论。-OFDM signal has a peak to average power ratio characteristic of interwoven OFDM technology in the inhibitory signal peak-average power ratio (PAPR) of the application. Thesis first expounded the basic principles of OFDM and key technologies, the simple introduction of the current of several methods to reduce PAPR, intertwined in the law to reduce PAPR of OFDM system, the theoretical analysis, based on a set of reasonable intertwined programs- use Packet interleaver and the pseudo-random interleaver to reduce PAPR, the final conclusion through MATLAB simulation. Platform: |
Size: 1024 |
Author:wu |
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Description: PAPR降低算法PTS和SLM源代码,降低峰值平均功率比的多载波调制的选择性映射-PAPR algorithm PTS and SLM to reduce the source code, reducing the peak-average power ratio of multicarrier modulation selective mapping Platform: |
Size: 2048 |
Author:sxb |
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Description: OnPerformanceLimitsofDFTSpreadOFDMSystems
DFT Spread OFDM has been proposed recently to
reduce the Peak to Average Power Ratio (PAPR) of conventional
OFDM transmission. Besides PAPR reduction, an important
implication of DFT Spreading is that the independent parallel
sub-channels between the sub-carriers cease to exist. This in
turn leads to difference in its performance limits as compared to
the conventional OFDM system. This paper analyzes the error
probabilities of DFT Spread OFDM systems, and derives their
analytical closed form expressions for the AWGN, fading AWGN,
multipath and fading multipath channel scenarios. Simulation
results presented in last section confirm the validity of the derived
analytical expressions. Platform: |
Size: 2151424 |
Author:ashokec |
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Description: 峰值抵消算法的基本思想是：在OFDM信号上叠加一个由一系列加权参考函数组成的峰值抵消信号，通过抵消函数的选取以及权值计算，使得抵消信号尽可能消除超过门限的信号幅值。常见的参考函数分为脉冲函数和其他窗函数两类。- T. May, H. Rohling. Reducing the peak-to-average power ratio in OFDM radio transmission systems. IEEE Vehicular Technology Conference (VTC), May 1998, Ottawa Canada, 3: 2474-2478
A. Geert Arnout, van N. Richard D., de W. Arnout Hendrik. Transmission system and method employing peak cancellation to reduce the peak-to-avrage power ratio. US Patent 6175551, Issued on January 16, 2001
S. K. Cha, M. H. Park, S. G. LEE, et al. A new PAPR reduction technique for OFDM systems using advanced peak windowing method. IEEE Trans. Consum. Electron., 2008, 54(2): 405-410
G. G. Chen, R. Ansari, Y. W. Yao. Improved peak windowing for PAPR reduction in OFDM. IEEE Vehicular Technology Conference, Apr. 2009, Barcelona, Spain
H. Kuo, S.W. Cheung. Optimization of windowing and peak-windowing techniques for WCDMA systems. IEEE International Conference on Acoustics, Speech and Signal Processing, May 2006, Toulouse France, 4: IV313-IV316
O. Vä ä nä nen, J. Vankka, K. Halonen. Simpl Platform: |
Size: 2681856 |
Author:daidaohan |
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Description: This M Code simulate the effects of clipping and filtering on PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
-This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
Platform: |
Size: 11770880 |
Author:shahram |
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Description: Multiple input multiple output techniques combined
with orthogonal frequency division multiplexing (MIMO-OFDM)
provide a promising approach for wireless systems. However, a
serious drawback of the OFDM system is the high peak-toaverage
power ratio (PAPR), which may severely affect the
power efficiency of RF power amplifiers. In this paper, we
propose a simple method to reduce the PAPR of MIMO-OFDM
signals based on the use of unused subcarriers. Instead of
processing the signals at each transmitter separately, a peak
cancelling signal is generated at one antenna and is then applied
to all the others with only simple modifications. Simulation has
shown that a minimum 2 dB reduction in PAPR can be achieved
for all transmit signals using this approach. As the signal
processing is nearly all done at a single transmitter, repetition of
the operations at each transmitter is avoided, and therefore the
overall cost of the system can be significantly reduced. Platform: |
Size: 714752 |
Author:payal |
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Description: 用改进的星座图扩展法降低OFDM信号峰均功率比-Improved constellation expansion method to reduce the OFDM signal peak to average power ratio Platform: |
Size: 232448 |
Author:杨玉成 |
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Description: OFDM程序代码，其中包含了调制过程和降低峰均比以及在多径信道中的传输并对接收到的信号进行译码判决。-OFDM program code, which includes the modulation process and reduce the peak rate and transmission in the multipath channel and received signal decoding.
Platform: |
Size: 9216 |
Author:dukexin |
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Description: 降低峰均功率比的程序，pts方法，调试通过-Reduce the peak to average power ratio of the program, pts method, debugging through Platform: |
Size: 1024 |
Author:于平 |
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Description: OFDM程序代码，其中包含了调制过程和降低峰均比以及在多径信道中的传输并对接收到的信号进行译码判决。-OFDM program code, which includes the modulation process and reduce the peak rate and transmission in the multipath channel and received signal decoding. Platform: |
Size: 9216 |
Author:orrkgara |
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Search - Ofdm peak reduce