Performance Evaluation of WR-OFDM System According to Window Length in Multipath Channel 


Vol. 44,  No. 3, pp. 470-476, Mar.  2019
10.7840/kics.2019.44.3.470


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  Abstract

For waveform studies of B5G (beyond 5th generation) mobile communication systems, we analyze performance change phenomenon with window length of WR-OFDM (window restructuring orthogonal frequency division multiplexing) system applying window function. WR-OFDM system is based on conventional CP-OFDM (OFDM using cyclic prefix) system. The proposed system is designed to reduce the wide gap with adjacent channel and improve the efficiency of use of spectrum resources. In other words, the WR-OFDM system applies window function at transmitter to reduce OOB (out-of-band) power of the conventional OFDM system, and restores information by restructuring process at receiver. Without additional time resources, like time extension using in conventional window method, the WR-OFDM system has OOB reduction effect. However, the WR-OFDM system causes partial interference by appling window function and multi-path delay signal in multi-path channel. In this study, we have confirmed how the window length affects BER performance in WR-OFDM system, and we have found interaction formula between window length and multi-path delay by conducting simulation with each tap of multi-path delay signal. We have also confirmed that we can regulate trade-off feature between OOB power reduction and BER performance according to setting of window length in multi-path channel.

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  Cite this article

[IEEE Style]

D. Kim and H. Ryu, "Performance Evaluation of WR-OFDM System According to Window Length in Multipath Channel," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 470-476, 2019. DOI: 10.7840/kics.2019.44.3.470.

[ACM Style]

Dayoung Kim and Heung-Gyoon Ryu. 2019. Performance Evaluation of WR-OFDM System According to Window Length in Multipath Channel. The Journal of Korean Institute of Communications and Information Sciences, 44, 3, (2019), 470-476. DOI: 10.7840/kics.2019.44.3.470.

[KICS Style]

Dayoung Kim and Heung-Gyoon Ryu, "Performance Evaluation of WR-OFDM System According to Window Length in Multipath Channel," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 3, pp. 470-476, 3. 2019. (https://doi.org/10.7840/kics.2019.44.3.470)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880