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首页> 外文期刊>International journal of engineering research and industrial applications >PEAK-TO-AVERAGE POWER RATIO REDUCTION SCHEMES FOR COMPLEX WAVELET PACKET MODULATION
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PEAK-TO-AVERAGE POWER RATIO REDUCTION SCHEMES FOR COMPLEX WAVELET PACKET MODULATION

机译：用于复杂小波包调制的峰均功率比降低方案

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摘要

High peak to average power ratio (PAPR) of a transmitted signal is one of the major drawbacks of complex wavelet packet modulation (CWPM) as usually used in multicarrier communication systems. Many PAPR reduction techniques have been proposed to solve this problem by utilizing the advantage that is obtained by concentrating the energy to certain subspaces of the discrete wavelet transform. In this paper the performance of a set of PAPR reduction methods designed for OFDM systems, including SLM, PTS, and TPWC, ATC, threshold, clipping and hybrid threshold-clipping are analyzed for the use in CWPM systems. The simulation results in Rayleigh multipath fading channels show that the hybrid threshold- clipping scheme achieves a reduction in PAPR of 4.6, 4.4 dB, 2.4 dB, and 5.5 dB over the SLM, PTS, clipping and TPWC methods respectively with less than 0.3 dB degradation in bit error probability.
机译：发射信号的高峰均功率比（PAPR）是通常在多载波通信系统中使用的复杂小波包调制（CWPM）的主要缺点之一。已经提出了许多通过利用将能量集中到离散小波变换的某些子空间而获得的优点来解决这个问题的PAPR降低技术。本文分析了为OFDM系统设计的一组PAPR降低方法的性能，包括SLM，PTS和TPWC，ATC，阈值，限幅和混合阈值限幅，以用于CWPM系统。在瑞利多径衰落信道中的仿真结果表明，与SLM，PTS，削波和TPWC方法相比，混合阈值削波方案在PAPR方面分别降低了4.6、4.4 dB，2.4 dB和5.5 dB，降级幅度小于0.3 dB。误码率。

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