Abstract
This paper proposes a novel time-frequency warped waveform for short symbols, massive machine-type communication (mMTC), and internet of things (IoT) applications. The waveform is composed of asymmetric raised cosine (RC) pulses to increase the signal containment in time and frequency domains. The waveform has low power tails in the time domain, hence better performance in the presence of delay spread and time offsets. The time-axis warping unitary transform is applied to control the waveform occupancy in time-frequency space and to compensate for the usage of high roll-off factor pulses at the symbol edges. The paper explains a step-by-step analysis for determining the roll-off factors profile and the warping functions. Gains are presented over the conventional Zero-tail Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (ZT-DFT-s-OFDM), and Cyclic prefix (CP) DFT-s-OFDM schemes in the simulations section.
| Original language | English |
|---|---|
| Pages (from-to) | 1900-1917 |
| Number of pages | 18 |
| Journal | IEEE Journal on Selected Areas in Communications |
| Volume | 41 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jun 2023 |
Bibliographical note
Publisher Copyright:© 1983-2012 IEEE.
Funding
This work was supported in part by the U.S. Department of Energy, in part by the Office of Science, in part by the Office of Advanced Scientific Computing Research under Award DE-SC0023023, and in part by the U.S. National Science Foundation under Grant 1923295.
| Funders | Funder number |
|---|---|
| National Science Foundation | 1923295 |
| U.S. Department of Energy | |
| Office of Science | |
| Advanced Scientific Computing Research | DE-SC0023023 |
Keywords
- 6G and beyond
- IoT
- mMTC
- massive machine-type communication
- time-frequency warping
- waveform