Design and Spectrum Characteristics Multicarrier Communication System Based on Wavelet Packet Transform 


Vol. 44,  No. 11, pp. 2023-2028, Nov.  2019
10.7840/kics.2019.44.11.2023


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  Abstract

In this paper, we designed DWPT(Discrete Wavelet Packet Transform)-OFDM(Orthogonal Frequency Division Multiplexing) and confirmed spectral characteristics. Unlike the conventional OFDM system, the DWPT-OFDM system uses the DWPT instead of FFT (Fast Fourier Transform). The wavelet transform, which is the basis of the wavelet packet, has a feature different from the Fourier transform since several wavelet set numbers are used. This study confirms the spectrum and OOB (Out of Band) characteristics of the DWPT-OFDM system through simulation results. The DWPT-OFDM system, like the OFDM system, can provide the details of the frequency assignment by entering null data. This is a feature that DWT (Discrete Wavelet Transform) -OFDM systems using existing wavelet transform does not have. The DWPT-OFDM system can use the narrow narrowband frequency spectrum resource generated by null data by coexisting with a system or sensor that requires narrowband frequency spectrum such as NB (Narrow Band) -IoT (Internet of Things).

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  Cite this article

[IEEE Style]

D. Kim, C. An, H. Ryu, "Design and Spectrum Characteristics Multicarrier Communication System Based on Wavelet Packet Transform," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 11, pp. 2023-2028, 2019. DOI: 10.7840/kics.2019.44.11.2023.

[ACM Style]

Dayoung Kim, Changyoung An, and Heung-Gyoon Ryu. 2019. Design and Spectrum Characteristics Multicarrier Communication System Based on Wavelet Packet Transform. The Journal of Korean Institute of Communications and Information Sciences, 44, 11, (2019), 2023-2028. DOI: 10.7840/kics.2019.44.11.2023.

[KICS Style]

Dayoung Kim, Changyoung An, Heung-Gyoon Ryu, "Design and Spectrum Characteristics Multicarrier Communication System Based on Wavelet Packet Transform," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 11, pp. 2023-2028, 11. 2019. (https://doi.org/10.7840/kics.2019.44.11.2023)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880