Unitary_Precoded_Single_Carrier_Modulation (3).pdf (378.9 kB)
Download fileUnitary-Precoded Single-Carrier Waveforms for High Mobility: Detection and Channel Estimation
preprint
posted on 2022-01-28, 21:10 authored by Tharaj ThajTharaj Thaj, Emanuele ViterboEmanuele ViterboThis paper presents unitary-precoded single-carrier (USC) modulation as a family of waveforms based on multiplexing the information symbols on time domain unitary basis functions. The common property of these basis functions is that they span the entire time and frequency plane.
The recently proposed orthogonal time frequency space (OTFS) and orthogonal time sequency multiplexing (OTSM) based on discrete Fourier transform (DFT) and Walsh Hadamard transform (WHT), respectively, fall in the general framework of USC waveforms. In this work, we present channel estimation and detection methods that work for any USC waveform and numerically show that any choice of unitary precoding results in the same error performance. Lastly, we implement some USC systems and compare their performance with OFDM in a real-time indoor setting using an SDR platform.
Funding
New modulation techniques for future high-mobility wireless communications
Australian Research Council
Find out more...History
Email Address of Submitting Author
tharaj.thaj@monash.eduORCID of Submitting Author
0000000212029201Submitting Author's Institution
Monash UniversitySubmitting Author's Country
- Australia