Spectral Efficiency Evaluation and Analysis of OFDM-IM System According to User Distribution Environments 


Vol. 43,  No. 6, pp. 952-960, Jun.  2018
10.7840/kics.2018.43.6.952


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  Abstract

In this paper, we examine the principle and signal processing method of orthogonal frequency division multiplexing with index modulation (OFDM-IM). And then we evaluate throughput improvement of OFDM-IM system according to user distribution in mobile communication and wireless local area network (WLAN) environment and compare it with existing OFDM system. In OFDM-IM system, the tradeoff characteristic between performance and efficiency is determined by setting the number of subcarriers used in the subblock. In this paper, we present quantitatively the spectral efficiency of the OFDM-IM system using a range of digital modulations. We also evaluate the throughput of the OFDM-IM system according to three user distribution scenarios in mobile communication and WLAN environment, respectively, and compare it with the existing OFDM system. Simulation results show that the OFDM-IM system achieves higher throughput than the OFDM system in all environments. Especially, it is confirmed that the throughput improvement of the OFDM-IM system is higher in the WLAN environment using the low-order modulation and in the scenario where the user is concentrated at the edge of the cell.

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  Cite this article

[IEEE Style]

C. An and H. Ryu, "Spectral Efficiency Evaluation and Analysis of OFDM-IM System According to User Distribution Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 6, pp. 952-960, 2018. DOI: 10.7840/kics.2018.43.6.952.

[ACM Style]

Changyoung An and Heung-Gyoon Ryu. 2018. Spectral Efficiency Evaluation and Analysis of OFDM-IM System According to User Distribution Environments. The Journal of Korean Institute of Communications and Information Sciences, 43, 6, (2018), 952-960. DOI: 10.7840/kics.2018.43.6.952.

[KICS Style]

Changyoung An and Heung-Gyoon Ryu, "Spectral Efficiency Evaluation and Analysis of OFDM-IM System According to User Distribution Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 43, no. 6, pp. 952-960, 6. 2018. (https://doi.org/10.7840/kics.2018.43.6.952)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880