Optimizing the energy efficiency of OFDM with index modulation

Miaowen Wen, Xiang Cheng, Liuqing Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Scopus citations

Abstract

Spatial modulation (SM) is a promising single frequency-radio (RF) large-scale multiple-input multiple-output (MIMO) technique which can strike an attractive tradeoff between spectral efficiency (SE) and energy efficiency (EE) of a wireless network. Recently, a novel technique termed as orthogonal frequency division multiplexing with index modulation (OFDM-IM) emerges, where the SM principle is applied to OFDM subcarriers. It is revealed that OFDM-IM has the potential to outperform classical OFDM in terms of uncoded bit error rate (BER). In this paper, the EE of OFDM-IM with finite-alphabet input is analyzed from an information-theoretic perspective. Based on the analytical expression, the optimal strategy in maximizing the EE of OFDM-IM is proposed, which involves the optimal subcarrier grouping approach as well as the optimal selection of the number of active subcarriers. Monte-Carlo simulations validate the analysis.

Original languageEnglish (US)
Title of host publication2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages31-35
Number of pages5
ISBN (Electronic)9781479958320
DOIs
StatePublished - Jan 27 2014
Externally publishedYes
Event2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014 - Macau, China
Duration: Nov 19 2014Nov 21 2014

Publication series

Name2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014

Conference

Conference2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014
CountryChina
CityMacau
Period11/19/1411/21/14

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    Wen, M., Cheng, X., & Yang, L. (2014). Optimizing the energy efficiency of OFDM with index modulation. In 2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014 (pp. 31-35). [7024760] (2014 IEEE International Conference on Communication Systems, IEEE ICCS 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCS.2014.7024760