On the PAPR reduction for wavelet based transmultiplexer

IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004. Pub Date : 2004-10-26 DOI:10.1109/ISCIT.2004.1413829

Khoirul Anwar, A. U. Priantoro, Masato Saito, T. Hara, Minoru Okada, Heiichi Yamamoto

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引用次数: 13

Abstract

This paper investigates the peak-to-average power ratio (PAPR) of a wavelet based transmultiplexer for a high-speed digital communications system. A transmultiplexer based on wavelet in conjunction with the spread spectrum technique, has been shown to exhibit good performance while having good spectral properties. On the other hand, a common issue with multicarrier modulation systems is the PAPR due to the superposition of a large number of independently modulated subcarriers in parallel at the transmitter. Reducing PAPR is essential for realizing power efficient devices, which is an important issue for future generations of mobile communication systems. Our computer simulation results clarified that Haar wavelet based transmultiplexers exhibit low PAPR values when frequency domain spreading using Hadamard code is employed. This result is similar to the case of orthogonal frequency division multiplexing (OFDM) where carrier interferometry (CI) codes were demonstrated to exhibit low PAPR values.

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基于小波的多路复用器的PAPR降低

研究了高速数字通信系统中基于小波的复用器的峰均功率比(PAPR)。一种基于小波与扩频技术相结合的多路复用器在具有良好的频谱特性的同时表现出良好的性能。另一方面，多载波调制系统的一个常见问题是PAPR，这是由于大量独立调制的子载波在发射机平行叠加造成的。降低PAPR是实现低功耗设备的关键，是未来移动通信系统的重要课题。我们的计算机模拟结果表明，当使用Hadamard码进行频域扩展时，基于Haar小波的复用器具有较低的PAPR值。这一结果与正交频分复用(OFDM)的情况类似，其中载波干涉(CI)代码被证明具有低PAPR值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE International Symposium on Communications and Information Technology, 2004. ISCIT 2004.

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