Design and Evaluation of a Novel Short Prototype Filter for FBMC/OQAM Modulation

Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal frequency-division multiplexi...

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Bibliographic Details
Published inIEEE access Vol. 6; pp. 19610 - 19625
Main Authors Nadal, Jeremy, Nour, Charbel Abdel, Baghdadi, Amer
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.01.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Communications systems
Complexity
Complexity theory
Computer Science
Context
Electronics
Engineering Sciences
FBMC/OQAM
Filter banks
filter design
Hardware
Information Theory
Modulation
Network latency
OFDM
Orthogonal Frequency Division Multiplexing
Prototypes
Quadrature amplitude modulation
Receivers
Research projects
Robustness
Signal and Image processing
FBMC/OQAM
5G
OFDM
Filter design
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Summary:Filter-bank multi-carrier with offset quadrature amplitude modulation (FBMC/OQAM) is considered by recent research projects as one of the key enablers for the future 5G air interface. It exhibits better spectral shape and improves mobility support compared to orthogonal frequency-division multiplexing (OFDM) thanks to the use of a time and frequency localized prototype filter. The choice of this filter is crucial for FBMC/OQAM, due to its substantial impact on achieved performance and complexity levels. In the context of 5G, short frame sizes are foreseen in several communication scenarios to reduce system latency, and therefore short filters are preferred. In this context, a novel short filter allowing for near perfect reconstruction and having the same size as one OFDM symbol is proposed. Using frequency-spread (FS) implementation for the FBMC/OQAM receiver, analytical analysis and simulation results show that the proposed filter exhibits better robustness to several types of channel impairments when compared to state-of-the-art prototype filters and OFDM modulation. In addition, FS-based hardware architecture of the filtering stage is proposed, showing lower complexity than the classical polyphase network-based implementation.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2018.2818883