Channel Estimation for Enhanced Subcarrier Index Modulation OFDM Using Zadoff-Chu Sequence Pilot in Nonlinear Channel

Simple item page
dc.contributor.authorMi, Si Sar
dc.contributor.authorSiriwanitpong, Aphichaya
dc.contributor.authorBoonsrimuang, Pornpawit
dc.contributor.authorBoonsrimuang, Pisit
dc.date.accessioned2026-08-06T10:35:29Z
dc.date.available2026-08-06T10:35:29Z
dc.date.issued2022-01-01
dc.description.abstractOrthogonal Frequency Division Multiplexing with Index Modulation (OFDM-IM) is a digital modulation scheme that conveys additional information bits by using the index of subcarriers. OFDM with enhanced subcarrier index modulation (OFDM-SIM) has been recently proposed to improve the bit error rate (BER) performance of multicarrier communication systems. It is challenging to estimate channel variation of the OFDM-SIM system in wireless communication systems for coherent detection at the receiver side. This paper proposes a new pilot data information Zadoff-Chu sequence for the channel estimation OFDM-SIM system. And OFDM-SIM channel estimation will be done by using the conventional OFDM-SIM symbol pilot and the proposed Zadoff-Chu sequence pilot in the multipath Rician fading channel. And evaluate the simulation results by using BER performance. BER results of channel estimation OFDM-SIM with proposed Zadoff-Chu sequence pilot decreased than BER results of channel estimation OFDM-SIM using conventional OFDM-SIM symbol pilot. And we evaluate the proposed Zadoff-Chu sequence channel estimation OFDM-SIM in a nonlinear multipath Rician fading channel. We can see that the proposed Zadoff-Chu sequence pilot outperformed than conventional OFDM-SIM symbol pilot in every input back off (IBO)=0 dB,-2dB,-4dB, and-6dB. Our proposed channel estimation method is evaluated by using computer simulation.
dc.identifier.citation19th International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2022, 2022
dc.identifier.doi10.1109/ECTI-CON54298.2022.9795645
dc.identifier.other2-s2.0-85133337897
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/12807
dc.source19th International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2022
dc.subjectchannel estimation
dc.subjectindex modulation
dc.subjectnonlinear channel
dc.subjectOFDM
dc.subjectZadoff-chu sequence
dc.titleChannel Estimation for Enhanced Subcarrier Index Modulation OFDM Using Zadoff-Chu Sequence Pilot in Nonlinear Channel
dc.typeConference Paper

Files

Collections

Research