Performance comparison of Orthogonal Wavelet Division Multiplexing (OWDM) system using discrete wavelet transform and wavelet packet transform on Rayleigh channel

2016 IEEE Asia Pacific Conference on Wireless and Mobile (APWiMob) Pub Date : 2016-09-01 DOI:10.1109/APWIMOB.2016.7811431

Yuyun Siti Rohmah, I. Dinata, D. A. Nurmantris

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引用次数: 7

Abstract

Orthogonal Wavelet Division Multiplexing is a multicarrier technique based on wavelet transform. It is an alternative technique of Orthogonal Frequency Division Multiplexing System in wireless communication. Fourier transform and invers Fourier transform of OFDM are exchanged by wavelet transform and inverse wavelet transform. The OWDM Scheme is consists of filter bank decomposition as modulator on transmitter and filter bank reconstruction as demodulator on receiver. The advantages of OWDM system are not only reduces complexity of Fourier Transform on OFDM system but also offers flexibility and optimal resolution. This paper compared two schemes of OWDM system using discrete wavelet transform and packet wavelet transform. The results show that performances of OWDM system based discrete wavelet is better than wavelet packet. However, the sub-band numbers of discrete wavelet cannot be as large as wavelet packets. This is due to the bandwidth divisions on OWDM based discrete wavelet are not same for each level of decomposition and reconstruction process.

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采用离散小波变换和小波包变换的正交小波分复用系统在瑞利信道上的性能比较

正交小波分复用是一种基于小波变换的多载波复用技术。它是无线通信中正交频分复用系统的一种替代技术。用小波变换和小波逆变换交换OFDM的傅里叶变换和反傅里叶变换。该方案由滤波器组分解作为发射机的调制器和滤波器组重构作为接收机的解调器组成。OWDM系统的优点不仅在于降低了OFDM系统的傅里叶变换复杂度，而且具有灵活性和最佳分辨率。本文比较了采用离散小波变换和分组小波变换的两种OWDM系统方案。结果表明，基于离散小波的OWDM系统性能优于小波包。但是，离散小波的子带数不能像小波包那么大。这是由于基于OWDM的离散小波在每一级分解和重构过程中的带宽划分是不一样的。

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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来源期刊

2016 IEEE Asia Pacific Conference on Wireless and Mobile (APWiMob)

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