Analysis and Evaluation of Filtered-OFDM Waveforms for 5G Mobile Communications 


Vol. 42,  No. 7, pp. 1333-1339, Jul.  2017
10.7840/kics.2017.42.7.1333


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  Abstract

In this paper, we analyze and evaluate the spectrum and BER performance of the filtered-OFDM. Filtered-OFDM is a method that divides an existing OFDM system into several sub-bands and filtering is used for OOB reduction and finally, the several subbands are added together to make one large OFDM symbol. Simulation results show that the OOB power reduction effect becomes more obvious as the filter length becomes longer. However, it is confirmed that the BER performance is constant even when the filter length is varied. The serious problem is that the filtered-OFDM must use the pre-compensation in the transmitter because the phase rotation problem is produced at the filtering process. This pre-compensation must work at every different many kinds of modulation levels, which is really complicated process in the transmitter. As a result, we have to consider some serious factors of the filtered-OFDM such as filter length, some loss in time domain, and complicated process in tx, which should be improved for the system realization of 5G mobile communication.

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  Cite this article

[IEEE Style]

B. Kim, C. An, J. Lee, K. Jang, H. Ryu, "Analysis and Evaluation of Filtered-OFDM Waveforms for 5G Mobile Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 7, pp. 1333-1339, 2017. DOI: 10.7840/kics.2017.42.7.1333.

[ACM Style]

Byeongjae Kim, Changyoung An, Jungu Lee, Kyeongsoo Jang, and Heung-Gyoon Ryu. 2017. Analysis and Evaluation of Filtered-OFDM Waveforms for 5G Mobile Communications. The Journal of Korean Institute of Communications and Information Sciences, 42, 7, (2017), 1333-1339. DOI: 10.7840/kics.2017.42.7.1333.

[KICS Style]

Byeongjae Kim, Changyoung An, Jungu Lee, Kyeongsoo Jang, Heung-Gyoon Ryu, "Analysis and Evaluation of Filtered-OFDM Waveforms for 5G Mobile Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 42, no. 7, pp. 1333-1339, 7. 2017. (https://doi.org/10.7840/kics.2017.42.7.1333)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880