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A Low Complexity Non-Distortion Clipping Technique PAPR Reduction of MIMO-OFDM Systems

机译:低复杂性非失真剪辑技术PAPR减少MIMO-OFDM系统

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摘要

Amplitude clipping is one of the techniques used to reduce PAPR. This technique does not demand side information; therefore, there is no reduction in the system's data throughput. However, it leads to additional distortion (in-band signal distortion and out-of-band radiation). To overcome this problem, low complexity non-distortion clipping technique is proposed for MIMO-OFDM system. The main concept of this proposed method is how to convert the generated distortion (in-band and out-of-band signals distortion) when using clipping at transmitter to impulse noise (error), which is possible by using a simple coding technique to cover error at the receiver. The proposed method does not clip the signal in time domain. The clipping use for discrete samples directly after IFFT. Simulation outcome detects that the proposed non-distortion clipping technique provides an efficient reduction in PAPR, best performance compared with conventional clipping technique, and less cost and complexity.
机译:幅度剪裁是用于减少PAPR的技术之一。 该技术不需要侧面信息; 因此,系统的数据吞吐量没有减少。 然而,它导致额外的失真(带内信号失真和带外辐射)。 为了克服这个问题,提出了用于MIMO-OFDM系统的低复杂性非失真剪辑技术。 这种提出的方法的主要概念是如何在发射器处使用剪辑时转换产生的失真(带外信号失真),以脉冲噪声(误差),这是通过使用简单的编码技术来覆盖的噪声(误差) 接收器处于错误。 所提出的方法不会在时域中剪辑信号。 IFFT后直接用于离散样品的剪辑使用。 仿真结果检测到所提出的非失真剪辑技术提供了PAPR的有效降低,与传统的剪切技术相比,以及较少的成本和复杂性。

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