一种改进的PAPR还原技术设计

M. Mowla, Zaki Muhammad Shahriar, S. M. Mahmud Hasan
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引用次数: 0

摘要

下一代无线通信网络(NGN)采用一种新兴的多载波复用传输技术,即正交频分复用(OFDM)。它提供了几个优点,如提供更大的抗多径衰落和脉冲噪声,消除符号间干扰(ISI),载波间干扰(ICI)和对均衡器的需求。然而,OFDM有一个普遍的问题,即峰值平均功率比(PAPR),即OFDM信号的峰值功率与平均功率之比。本文提出并实现了一种改进的削幅滤波方法,与现有方法相比,在减小PAPR的情况下有了显著的改进。
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An enhanced design of PAPR reduction technique
Next generation wireless communication networks (NGN) uses one of the emerging multicarrier multiplexing transmission techniques which is known as orthogonal frequency division multiplexing (OFDM). It provides several advantages such as offering greater immunity to multipath fading & impulse noise, eliminating inter-symbol interference (ISI), inter-carrier interference (ICI) & the need for equalizers. However, OFDM have a generic problem of high peak to average power ratio (PAPR) which is defined as the ratio of the peak power to the average power of the OFDM signal. In this paper, an improved design of amplitude clipping & filtering method is proposed and implemented which shows the significant improvement in case of PAPR reduction compare to an existing method.
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