二WHT和双WHT: OFDM中有效的PAPR降低方法

2016 IEEE International Conference on Advances in Electronics, Communication and Computer Technology (ICAECCT) Pub Date : 2016-12-01 DOI:10.1109/ICAECCT.2016.7942577

S. Shete, G. Bhide, M. Jadhav

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引用次数: 4

摘要

随着通信技术的飞速发展，正交频分复用技术(OFDM)作为一种多载波通信技术，在有线和无线通信中都得到了广泛的应用。OFDM由多个载波在单通道上进行信号传输。OFDM信号是由多个正弦波组成的时域信号，由于正弦波的存在，OFDM信号的峰值平均功率比(PAPR)增大。由于这种高的PAPR降低了传输效率，因此PAPR是OFDM的主要缺点。有几种减少PAPR的技术，但预编码技术表现出更好的效果。本文提出了Walsh Hadamard变换(WHT)和Double Walsh Hadamard变换(Double WHT)。该方案取得了较好的效果。

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WHT and Double WHT: An effective PAPR reduction approach in OFDM

With rapid growth in communication orthogonal frequency division multiplexing (OFDM) is multi-carrier communication technique becomes more popular which is used in both wired and wireless communication. OFDM consist of multiple carriers over single channel for signal transmission. OFDM is the time domain signal which is made up of several sinusoids and due to this sinusoids Peak to Average Power Ratio (PAPR)of OFDM signal increases. Due to this high PAPR transmission efficiency reduces so PAPR is major drawback of OFDM. There are several PAPR reduction techniques but, pre-coding techniques shows better result. In this paper, we propose Walsh Hadamard Transform (WHT) and Double Walsh Hadamard Transform (Double WHT). The proposed scheme shows the better results.

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来源期刊

2016 IEEE International Conference on Advances in Electronics, Communication and Computer Technology (ICAECCT)

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