Dergiler / Balkan Journal of Electrical and Computer Engineering / 2019 / Cilt: 7 - Sayı: 2

Sub-block Aided OFDM with Index Modulation

Sub-block Aided OFDM with Index Modulation

Y. ACAR

Sayfa
156–161
DOI
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Abstract

Recently, orthogonal frequency division multiplexing (OFDM) with index modulation (IM) has been appeared as a novel method for future wireless communication systems. However, such a mechanism has low spectral efficiency since some sub-carriers are not activated in order to implicitly convey information. In this paper, a subblock dependent approach, called sub-block aided OFDMIM (SA-OFDM-IM) technique, is proposed for spectral efficiency enhancement of the OFDM-IM method with lower complexity. The simulation results illustrate that the proposed SA-OFDM-IM and well known OFDM-IM have same bit error rate (BER) performance while SA-OFDMIM has 40% more spectral efficiency with low complexity.