Design and Performance Evaluation of Multi-Mode DWT-OFDM Under Nonlinear HPA 


Vol. 44,  No. 10, pp. 1799-1805, Oct.  2019
10.7840/kics.2019.44.10.1799


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  Abstract

In this paper, we design and evaluate the performance of multi-mode DWT (Discrete Wavelet Transform)-OFDM (Orthogonal Frequency Division Multiplexing) system that improves spectral efficiency under nonlinear HPA environment. Multi-mode DWT-OFDM is a system combining with DWT-OFDM based on DWT instead of FFT. The multi-mode DWT-OFDM system, which uses several wavelet functions and sends additional index bits to it, has a spectral efficiency of about 11% higher than the conventional OFDM system. Simulations were conducted to evaluate and compare multi-mode DWT-OFDM system and multi-mode DWT-OFDM system with convolutional coding with 1/2 code rate under HPA (High Power Amplifier) nonlinear environment. As a result, the multi-mode DWT-OFDM system with convolutional coding has a BER performance similar to that of the conventional OFDM system under HPA nonlinear environment and shows a spectral efficiency improvement of 22%.

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  Cite this article

[IEEE Style]

D. Kim, J. Lee, H. Ryu, "Design and Performance Evaluation of Multi-Mode DWT-OFDM Under Nonlinear HPA," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 10, pp. 1799-1805, 2019. DOI: 10.7840/kics.2019.44.10.1799.

[ACM Style]

Dayoung Kim, Jungu Lee, and Heung-Gyoon Ryu. 2019. Design and Performance Evaluation of Multi-Mode DWT-OFDM Under Nonlinear HPA. The Journal of Korean Institute of Communications and Information Sciences, 44, 10, (2019), 1799-1805. DOI: 10.7840/kics.2019.44.10.1799.

[KICS Style]

Dayoung Kim, Jungu Lee, Heung-Gyoon Ryu, "Design and Performance Evaluation of Multi-Mode DWT-OFDM Under Nonlinear HPA," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 10, pp. 1799-1805, 10. 2019. (https://doi.org/10.7840/kics.2019.44.10.1799)

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pISSN : 1226 - 4717
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