Design and Performance Evaluation of Improved DFT-s-SSB OFDM 


Vol. 42,  No. 11, pp. 2086-2092, Nov.  2017
10.7840/kics.2017.42.11.2086


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  Abstract

In this paper, we propose a DFT-s-SSB OFDM(Single Sideband Orthogonal Frequency Division Multiplexing) system that applies convolutional coding and utilizes the remaining spectrum resources in the existing DFT-s-SSB OFDM and improves BER performance. DFT-s-SSB OFDM using PAM(Pulse Amplitude Modulation) has degradation of BER performance is serious. Also, the used subcarriers should be used more than half of the number of subcarriers used in the conventional OFDM system. Therefore, frequency resources are left in OFDM symbol. The proposed improved DFT-s-SSB OFDM adjust the DFT size. Unlike the conventional system where only the LSB(Lower Sideband) spectrum is used, another signal is transmitted using USB(Upper Sideband) spectrum on one symbol. In this case, the convolution coding of 2/3 rate is applied. Even if the data rate becomes 2/3, all the frequency resources can be utilized and the two information signals can be sent to the USB and LSB spectrum, and the BER performance can be improved together with the enhanced spectrum efficiency by SSB.

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  Cite this article

[IEEE Style]

B. Kim and H. Ryu, "Design and Performance Evaluation of Improved DFT-s-SSB OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 11, pp. 2086-2092, 2017. DOI: 10.7840/kics.2017.42.11.2086.

[ACM Style]

Byeongjae Kim and Heung-Gyoon Ryu. 2017. Design and Performance Evaluation of Improved DFT-s-SSB OFDM. The Journal of Korean Institute of Communications and Information Sciences, 42, 11, (2017), 2086-2092. DOI: 10.7840/kics.2017.42.11.2086.

[KICS Style]

Byeongjae Kim and Heung-Gyoon Ryu, "Design and Performance Evaluation of Improved DFT-s-SSB OFDM," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 11, pp. 2086-2092, 11. 2017. (https://doi.org/10.7840/kics.2017.42.11.2086)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880