Efficient Offline Waveform Design Using QuincunxHexagonal Time-Frequency Lattices
Joint Authors
Ayadi, Raouia
Kammoun, Inès
Siala, Mohamed
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-26
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Information Technology and Computer Science
Abstract EN
Conventional orthogonal frequency division multiplexing (OFDM) may turn to be inappropriate for future wireless cellular systems services, because of extreme natural and artificial impairments they are expected to generate.
Natural impairments result from higher Doppler and delay spreads, while artificial impairments result from multisource transmissions and synchronization relaxation for closed-loop signaling overhead reduction.
These severe impairments induce a dramatic loss in orthogonality between subcarriers and OFDM symbols and lead to a strong increase in intercarrier interference (ICI) and intersymbol interference (ISI).
To fight against these impairments, we propose here an optimization of the transmit/receive waveforms for filter-bank multicarrier (FBMC) systems, with hexagonal time-frequency (TF) lattices, operating over severe doubly dispersive channels.
For this, we exploit the Ping-pong Optimized Pulse Shaping (POPS) paradigm, recently applied to rectangular TF lattices, to design waveforms maximizing the signal-to-interference-plus-noise ratio (SINR) for hexagonal TF lattices.
We show that FBMC, with hexagonal lattices, offers a strong improvement in SINR with respect to conventional OFDM and an improvement of around 1 dB with respect to POPS-FBMC, with rectangular lattices.
Furthermore, we show that hexagonal POPS-FBMC brings more robustness to frequency synchronization errors and offers a 10 dB reduction in out-of-band (OOB) emissions, with respect to rectangular POPS-FBMC.
American Psychological Association (APA)
Ayadi, Raouia& Kammoun, Inès& Siala, Mohamed. 2017. Efficient Offline Waveform Design Using QuincunxHexagonal Time-Frequency Lattices. Wireless Communications and Mobile Computing،Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1206313
Modern Language Association (MLA)
Ayadi, Raouia…[et al.]. Efficient Offline Waveform Design Using QuincunxHexagonal Time-Frequency Lattices. Wireless Communications and Mobile Computing No. 2017 (2017), pp.1-16.
https://search.emarefa.net/detail/BIM-1206313
American Medical Association (AMA)
Ayadi, Raouia& Kammoun, Inès& Siala, Mohamed. Efficient Offline Waveform Design Using QuincunxHexagonal Time-Frequency Lattices. Wireless Communications and Mobile Computing. 2017. Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1206313
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1206313