OFDM With Interleaved Subcarrier-Index Modulation

Single‐cell and multi‐cell performance analysis of OFDM index modulation

“…In practise, this i.i.d. channel assumption can be achieved by introducing interleaving between subcarriers as [8]. The interleaving can be done via a pseudo-random sequence, which is shared by the BS and UE, such that the BS and UE can map or de-map between the original subcarrier indices and the interleaved subcarrier indices.…”

“…A low-complexity ML detector for OFDM with in-phase/quadrature IM was discussed in [7], which was implemented with a priori knowledge of noise variance. In [8], additional interleaving was introduced to subcarriers in correlated channels, in order to provide extra diversity gain to the OFDM-IM. Later, the combination of OFDM-IM and SM was proposed in [9], where the symbol domain, subcarrier domain, and spatial domain formed a three-dimensional signal space.…”

“…When the transmitted symbols of OFDM-IM are quadrature-amplitude modulation (QAM) symbols, this type of OFDM-IM was named frequency QAM (FQAM) [2]. Studies of OFDM-IM in [1,2,[6][7][8][9] focused on bit error rate and frame error rate performance.…”

SC-FDMA with index modulation for M2M and IoT uplink applications

“…Additional information is coded through the choice of sub-carriers indices in a given symbol. Several variants of indexing have been proposed in the literature in order to increase the spectral efficiency [7], and enhance the bit error rate (BER) performance [8].…”

Selective multi-carrier index keying OFDM: Error propagation rate with moment generating function

“…Recently, the tight bit error rate (BER) expression of MCIK-OFDM has been derived for any number of active subcarriers in [3]. The impact of sub-carrier correlation on the detection error probability was investigated in [4], [5]. However, for the successful development of MCIK-OFDM D2D wireless systems, which is envisioned to consist of thousands of low-cost, energy constrained devices, low-complexity detection schemes are studied [6]- [8].…”