Research Information System
IEEE International Conference on Contemporary Computing and Communications (InC4), Bengaluru, India, 15 - 16 March 2024, pp.1-5
The Orthogonal Time-Frequency Space (OTFS)
with Index Modulation (OTFS-IM) system conveys information
using M-ary constellation symbols and active subcarrier indices.
Recently, researchers have focused on this technique as an option
for future wireless communication systems due to its superior
performance over OTFS and previous modulations such as Orthogonal Frequency Division Multiplexing (OFDM) and OFDM
with Index Modulation (OFDM-IM). This study investigates the
effect of barrage jamming on the performance of an OTFS-IM
system, employing maximum likelihood (ML), minimum mean
square error (MMSE), and log-likelihood ratio (LLR) detectors
with a 3GPP-defined tapped delay line (TDL) channel. Simulation
results show that OTFS-IM outperforms OTFS and OFDM-IM
in bit error rate (BER) at high signal-to-jamming ratio (SJR)
levels, but experiences more impact from barrage jamming at
lower SJR levels. Additionally, the ML detector is observed to
be less complex than the LLR detector.