Complex Combination Technique for Overcome of LSB-USB Interference in SSB-OFDM System Using DFT Spreading 


Vol. 44,  No. 3, pp. 477-483, Mar.  2019
10.7840/kics.2019.44.3.477


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  Abstract

Orthogonal frequency division multiplexing (OFDM) has advantages such as simple equalization in receivers and flexible allocation of resources in time and frequency domains, and is being used in various wireless communications. It is used in various wireless communications and is attracting attention as a core technology for future 5th generation (5G) and beyond 5G mobile communication. Efforts are being made to improve the characteristics of OFDM according to the international trend. Recently, discrete Fourier transform spread single sideband OFDM (DFTs-SSB-OFDM) was proposed to effectively reduce PAPR, which is the biggest weakness of OFDM. However, this system has a problem that when the lower sideband (LSB) and the upper sideband (USB) are transmitted at the same time, the transmission amount of the symbol to be transmitted at one time is partially reduced. This greatly degrades backward compatibility because it requires changes in key parameters of each layer of an existing designed system. In this paper, we solve this problem by adding complex combination processing to DFTs-SSB-OFDM. Simulation results show that the proposed system can overcome LSB-USB interference without degradation of transmission efficiency and performance.

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  Cite this article

[IEEE Style]

C. An and H. Ryu, "Complex Combination Technique for Overcome of LSB-USB Interference in SSB-OFDM System Using DFT Spreading," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 477-483, 2019. DOI: 10.7840/kics.2019.44.3.477.

[ACM Style]

Changyoung An and Heung-Gyoon Ryu. 2019. Complex Combination Technique for Overcome of LSB-USB Interference in SSB-OFDM System Using DFT Spreading. The Journal of Korean Institute of Communications and Information Sciences, 44, 3, (2019), 477-483. DOI: 10.7840/kics.2019.44.3.477.

[KICS Style]

Changyoung An and Heung-Gyoon Ryu, "Complex Combination Technique for Overcome of LSB-USB Interference in SSB-OFDM System Using DFT Spreading," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 477-483, 3. 2019. (https://doi.org/10.7840/kics.2019.44.3.477)

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pISSN : 1226 - 4717
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