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This paper analyzes the bit error rate (BER) of multicarrier index keying -orthogonal frequency division multiplexing (MCIK-OFDM) with selection combining(SC) diversity reception. Particularly, we propose a generalized framework toderive the BER for both the low-complexity greedy detector (GD) and maximumlikelihood (ML) detector. Based on this, closedform expressions for the BERs ofMCIK-OFDM with the SC using either the ML or the GD are derived in presence ofthe channel state information (CSI) imperfection. The asymptotic analysis ispresented to gain helpful insights into effects of different CSI conditions onthe BERs of these two detectors. More importantly, we theoretically provideopportunities for using the GD instead of the ML under each specific CSIuncertainty, which depend on the number of receiver antennas and the M-arymodulation size. Finally, extensive simulation results are provided in order tovalidate our theoretical expressions and analysis.

Generalized BER of MCIK-OFDM with Imperfect CSI: Selection combining GD versus ML receivers