Time-Frequency Warped Waveforms
IEEE Communications Letters, cilt.23, sa.1, ss.36-39, 2019 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 23 Sayı: 1
- Basım Tarihi: 2019
- Doi Numarası: 10.1109/lcomm.2018.2882498
- Dergi Adı: IEEE Communications Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.36-39
- Anahtar Kelimeler: Adaptive filters, interference suppression, pulse shaping, time-frequency warping, waveform design
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- İstanbul Medipol Üniversitesi Adresli: Evet
Özet
The forthcoming communication systems are advancing toward improved flexibility in various aspects. Improved flexibility is crucial to cater diverse service requirements. This letter proposes a novel waveform design scheme that exploits axis warping to enable peaceful coexistence of different pulse shapes. A warping transform manipulates the lattice samples non-uniformly and provides flexibility to handle the time-frequency occupancy of a signal. The proposed approach enables the utilization of flexible pulse shapes in a quasi-orthogonal manner and increases the spectral efficiency. In addition, the rectangular resource block structure, which assists an efficient resource allocation, is preserved with the warped waveform design as well.