Impact of Opportunistic Transmission on MCIK-OFDM: Diversity and Coding Gains
This work proposes an opportunistic scheduling scheme for Multi-Carrier Index Keying - Orthogonal Frequency Division Multiplexing (MCIK-OFDM), which is termed as OS-MCIK-OFDM. Particularly, in every transmission, the proposed scheme allows only one machine whose worst sub-channel is the maximum among several machines’ worst sub-channels, to communicate with the central device, employing MCIK-OFDM technique. As a result, OS-MCIK-OFDM can harvest the multi-user diversity gain to enhance the reliability of MCIK-OFDM, especially when the number of machines increases. For performance analysis, we derive the closed-form expression for the symbol error probability (SEP), which is then asymptotically analyzed to develop unique features that can address achievable diversity and coding gains, as well as impacts of system parameters. Finally, simulation results are presented to validate the accuracy of the derived SEP performance of OS-MCIK-OFDM and specifically its superiority over the opportunistic scheduling OFDM.
KeywordsMICK-OFDM OFDM-IM Index modulation IM Opportunistic scheduling Symbol error probability (SEP)
- 1.Abu-alhiga, R., Haas, H.: Subcarrier-index modulation OFDM. In: Proceedings of IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp. 177–181, September 2009Google Scholar
- 5.Luong, T.V., Ko, Y.: A closed-form symbol error probability for MCIK-OFDM with frequency diversity. In: Proceedings of IEEE SPAWC, July 2017, pp. 1–5 (2017)Google Scholar
- 10.Luong, T.V., Ko, Y.: Symbol error outage performance analysis of MCIK-OFDM over complex TWDP fading. In: Proceedings of European Wireless, May 2017, pp. 1–5 (2017)Google Scholar
- 12.Luong, T.V., Ko, Y.: The BER analysis of MRC-aided greedy detection for OFDM-IM in presence of uncertain CSI. IEEE Wireless Commun. Lett., to be publishedGoogle Scholar
- 19.Luong, T.V., Ko, Y., Choi, J.: Precoding for spread OFDM IM. In: Proceedings of IEEE 87th Vehicular Technology Conference (VTC Spring), pp. 1–5 (2018)Google Scholar