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Conference Paper
Orthogonal Waveforms Design for Quasi-synchronous Communications
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- Authors
- Giyoon Park, Ok-Sun Park, Young Ha Lee, Wangrok Oh
- Issue Date
- 2019-10
- Citation
- International Conference on Information and Communication Technology Convergence (ICTC) 2019, pp.830-833
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In wireless communications, orthogonal waveforms having short duration are desirable to achieve low system latency. In addition, immunity to interferences from other user signals is one of desirable features for the waveforms especially in massive uplink access. In this paper, we derive sufficient constraints for orthogonal and short duration waveforms. Under the constraints, we propose signal waveforms suitable for quasi-synchronized communication systems by using gradient-decent algorithm in minimizing average power of interference from other users. Numerical results show that signal-to-interference power ratio can be enhanced by using the proposed waveforms.
- KSP Keywords
- Average Power, Communication system, Desirable features, Numerical results, Orthogonal waveforms, Synchronous communications, interference power, power ratio, quasi-synchronous, short duration, wireless communication