New OFDM structure with parallel combinatory code

Subcarrier-Index Modulation Aided OFDM - Will It Work?

“…9, we considered the normalized throughput of 3.0 bits/s/Hz. Here, the 8-PSK-aided OFDM, the 8-PSK-aided SIM (8,7), the 8-PSK-aided SIM (16,13), and the 32-PSK-aided SIM (16,7) schemes were compared. The MEDs of the associated four schemes were 0.59, 0.67, 0.72, and 0.088, respectively.…”

“…Motivated by the PC-SS concept [17]- [19], the SIM scheme was proposed by Frenger and Svensson in [3], where the main difference between the PC-SS and the SIM schemes is in the specific technique of activating spreading sequences and subcarriers. Furthermore, Hou and Hamamura [5] developed the parallel multi-carrier modulation concept for improving the bandwidth efficiency of the SIM scheme, while a phase-rotation scheme was used for the sake of reducing the PAPR of the SIM scheme by Hou and Hase [7].…”

“…However, in most of the previous studies [2], [3], [7]- [15], [17]- [19], [24], the performance advantages of the SIM scheme have been discussed in uncoded scenarios, while wireless systems tend to rely on channel coding. The only exceptions were found in [6] and [16].…”

“…The information theoretic maximum achievable rate (MAR) of the SIM scheme was derived by Wen et al [16]. Furthermore, it is a challenging task to derive the exact PAPR of the SIM scheme, hence the previous studies [3], [7] relied on numerical investigations. Although the maximum PAPR value of the SIM scheme was derived analytically by Tsonev et al in [8], it is more important to consider the PAPR distribution [25], rather than its maximum value.…”