Sparse multi-carrier index keying OFDM with index separation over correlated sub-carriers

Youngwook Ko, Jinho Choi

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

6 Citations (Scopus)
788 Downloads (Pure)


In this paper, we propose a sparse multi-carrier index keying (MCIK) method for orthogonal frequency division multiplexing (OFDM) system, which uses the indices of sparse sub-carriers to transmit the data, and improve the performance
of signal detection in highly correlated sub-carriers. Although a receiver is able to exploit a power gain with precoding in OFDM, the sensitivity of the signal detection is usually high as the orthogonality is not retained in highly dispersive
environments. To overcome this, we focus on developing the trade-off between the sparsity of the MCIK, correlation, and performances, analyzing the average probability of the error propagation imposed by incorrect index detection over highly correlated sub-carriers. In asymptotic cases, we are able to see how sparsity of MCIK should be designed in order to perform superior to the classical OFDM system. Based on this feature, sparse MCIK based OFDM is a better choice for low detection errors in highly correlated sub-carriers.
Original languageEnglish
Title of host publication2015 International Conference on Information and Communication Technology Convergence (ICTC)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
Publication statusPublished - Oct 2015
EventInternational Conference on ICT Convergence (ICTC 2015) - Jeju Island, Korea, Republic of
Duration: 28 Oct 201530 Oct 2015


ConferenceInternational Conference on ICT Convergence (ICTC 2015)
Country/TerritoryKorea, Republic of
CityJeju Island


  • Multicarrier index keying
  • OFDM


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