Subcarrier Segmentation Based Index Mapping for OFDM Index Modulation 


Vol. 44,  No. 2, pp. 199-207, Feb.  2019
10.7840/kics.2019.44.2.199


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  Abstract

OFDM with index modulation(OFDM-IM) separates entire subcarriers into active subcarriers modulated with QAM symbols and inactive subcarriers with zero power, and then carries additional information bits using indices of active subcarriers. In OFDM-IM, index selecting bits(ISB), which are part of input bits, determine the subcarrier activation patterns (SAP) to be activated via the index mapping process. One-to-one mapping of these ISBs to SAPs inevitably leads to SAPs that is not used for communication. However, SAPs determined not to be used can be detected at the receiver if the wireless channel or noise deteriorates which causes a fatal error in communication. Reducing the fatal detection error in such a receiver is an important issue in OFDM-IM, but this can lead to deterioration of the frequency efficiency of OFDM-IM. To solve this problem, we propose a method to improve the BER performance of OFDM-IM by subcarrier segmentation without reducing the frequency efficiency of OFDM-IM under specific parameters in this paper.

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  Cite this article

[IEEE Style]

J. Kim and E. Yoon, "Subcarrier Segmentation Based Index Mapping for OFDM Index Modulation," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 2, pp. 199-207, 2019. DOI: 10.7840/kics.2019.44.2.199.

[ACM Style]

Janghyun Kim and Eunchul Yoon. 2019. Subcarrier Segmentation Based Index Mapping for OFDM Index Modulation. The Journal of Korean Institute of Communications and Information Sciences, 44, 2, (2019), 199-207. DOI: 10.7840/kics.2019.44.2.199.

[KICS Style]

Janghyun Kim and Eunchul Yoon, "Subcarrier Segmentation Based Index Mapping for OFDM Index Modulation," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 2, pp. 199-207, 2. 2019. (https://doi.org/10.7840/kics.2019.44.2.199)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880